CS35L41 amplifiers in an ASUS Zenbook on linux

cs35l41_spi.md

Asus Zenbook UX3402 speakers on Linux

Important

THIS IS NOW OBSOLETE WITH KERNEL VERSIONS ≥ 6.7.0

A recent announcement in the kernel mail list by Cirrus developers will solve the problem described here. Therefore, the proposed solutions will be soon obsolete. See this comment (thanks, @flukejones, for the tip).

I got the speakers working on my Asus Zenbook 14 OLED UX3402, the one with Intel CPU and the two CS35L41 audio amplifiers connected over SPI (not the UM3402YA, with AMD and I²C). The amplifiers are supported by the snd_hda_scodec_cs35l41 module in recent kernel versions, but they require some model-specific configuration paramaters, that should be provided by the BIOS, via ACPI. Of course, they are missing. It seems that the Windows drivers have those parameters somehow hardcoded, instead of using ACPI (bad idea, but who am I to criticise). Since Asus has been nasty and refused/was not able to update the BIOS with the missing data, I have patched the ACPI tables myself.

Warning

As stated by Cirrus developers, if you try this there is a non-zero (low, I hope) possibility of blowing your speakers. Take into account that this procedure is not just configuring your box, it is hardware-level hacking with very scarce information about the hardware (thank you, ASUS, and thank you, Cirrus, for not publishing the CS35L41 datasheet and making it only available by request). Additionally, You should know how to work with DSDT or SSDT files (I have a brief guide here) and how to recover from a non booting system. You are on your own. You have been warned.

Note

I have used the patch for some months, and everything seems OK. As you can see, the most recent versions do not require electrical parameters to be specified, just providing the functions of several GPIO pins, that are already present in the original BIOS, and the behavior associated to them. I am almost sure that the patch is totally safe.

My BIOS is the most recent one (version 310). I have added two _DSD objects in the SSDT file (ssdt_csc3551.dsl, or its already assembled version, ssdt_csc3551.aml):

• One inside the SPK1 device, providing the missing "cirrus,dev-index" and other properties, just like the I2C models. You can also provide these properties by patching the kernel module (the linux/sound/pci/hda/cs35l41_hda.c file).

• Another one, after the SPK1 device, with the chip select GPIOs, "cs-gpios", required by the SPI bus (the somehow simpler I²C bus does not use chip select pins, but addresses). Without this _DSD object, only one amplifier can be addressed and activated. In this case, the driver refuses to load even for this single working amplifier.

Obsolete: DSDT patch

Instead of applying a SSDT file, you may patch the full DSDT dissassembled DSDT file (dsdt.dsl). This was my original solution (thanks to @thor2002ro for pointing to the simpler, nicer SSDT solution, see the comment, especially if you use grub). The patch is available for reference, just apply the SSDT file.

Obsolete: internal boost

I keep the old, original patch, that produced AMP short error messages when the volume was high enough, for reference. Please try first the simpler patch with external boost, that seems to work without flaws (thanks to @bdandy, see the comment).

Boot log

Output from journalctl -b -g CSC3551 --output short-monotonic after the old patch:

[5.358062] zenbook kernel: Serial bus multi instantiate pseudo device driver CSC3551:00: Instantiated 2 SPI devices.
[5.643640] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: Cirrus Logic CS35L41 (35a40), Revision: B2
[5.680302] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: Cirrus Logic CS35L41 (35a40), Revision: B2
[5.996217] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: Falling back to default firmware.
[5.996608] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: DSP1: Firmware version: 3
[5.996611] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: DSP1: cirrus/cs35l41-dsp1-spk-prot.wmfw: Fri 24 Jun 2022 14:55:56 GMT Daylight Time
[6.069598] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: DSP1: Firmware: 400a4 vendor: 0x2 v0.58.0, 2 algorithms
[6.070173] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: DSP1: 0: ID cd v29.78.0 XM@94 YM@e
[6.070185] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: DSP1: 1: ID f20b v0.1.0 XM@17c YM@0
[6.070192] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: DSP1: spk-prot: e:\workspace\workspace\tibranch_release_playback_6.76_2\ormis\staging\default_tunings\internal\CS35L53\Fixed_Attenuation_Mono_48000_29.78.0\full\Fixed_Attenuation_Mono_48000_29.78.0_full.bin
[6.083485] zenbook kernel: snd_hda_codec_realtek ehdaudio0D0: bound spi1-CSC3551:00-cs35l41-hda.0 (ops cs35l41_hda_comp_ops [snd_hda_scodec_cs35l41])
[6.083899] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: Falling back to default firmware.
[6.083962] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: DSP1: Firmware version: 3
[6.083966] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: DSP1: cirrus/cs35l41-dsp1-spk-prot.wmfw: Fri 24 Jun 2022 14:55:56 GMT Daylight Time
[6.145224] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: DSP1: Firmware: 400a4 vendor: 0x2 v0.58.0, 2 algorithms
[6.145817] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: DSP1: 0: ID cd v29.78.0 XM@94 YM@e
[6.145828] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: DSP1: 1: ID f20b v0.1.0 XM@17c YM@0
[6.145834] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: DSP1: spk-prot: e:\workspace\workspace\tibranch_release_playback_6.76_2\ormis\staging\default_tunings\internal\CS35L53\Fixed_Attenuation_Mono_48000_29.78.0\full\Fixed_Attenuation_Mono_48000_29.78.0_full.bin
[6.161484] zenbook kernel: snd_hda_codec_realtek ehdaudio0D0: bound spi1-CSC3551:00-cs35l41-hda.1 (ops cs35l41_hda_comp_ops [snd_hda_scodec_cs35l41])

The "Falling back to default firmware" disappears if spk-id-gpios are provided (the block is commented in the patch). As a result, a different firmware is loaded, resulting in very low volume and strong distortion. If the new patch is used, that uses external boost, the sound is correct, and the log is

[0.004000] zenbook kernel: ACPI: Table Upgrade: install [SSDT-CUSTOM- CSC3551]
[0.004000] zenbook kernel: ACPI: SSDT 0x00000000368FD000 0001A0 (v01 CUSTOM CSC3551  00000001 INTL 20200925)
[5.607253] zenbook kernel: Serial bus multi instantiate pseudo device driver CSC3551:00: Instantiated 2 SPI devices.
[5.906936] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: Cirrus Logic CS35L41 (35a40), Revision: B2
[5.907354] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: Reset line busy, assuming shared reset
[5.938136] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: Cirrus Logic CS35L41 (35a40), Revision: B2
[6.239406] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: DSP1: Firmware version: 3
[6.239415] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: DSP1: cirrus/cs35l41-dsp1-spk-prot-10431e02.wmfw: Fri 27 Aug 2021 14:58:19 W. Europe Daylight Time
[6.313109] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: DSP1: Firmware: 400a4 vendor: 0x2 v0.43.1, 2 algorithms
[6.313524] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: DSP1: 0: ID cd v29.63.1 XM@94 YM@e
[6.313530] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: DSP1: 1: ID f20b v0.1.0 XM@176 YM@0
[6.313535] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: DSP1: spk-prot: C:\Users\tyang\Desktop\Product Setting\SmartAMP\ASUS\ASUS_Zenbook\UX3402\Tuning Release\220304\ASUS_UX3402_L_tuning_IDYC_ReDc_PICL_RTL_0304.bin
[6.337211] zenbook kernel: snd_hda_codec_realtek ehdaudio0D0: bound spi1-CSC3551:00-cs35l41-hda.0 (ops cs35l41_hda_comp_ops [snd_hda_scodec_cs35l41])
[6.337534] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: DSP1: Firmware version: 3
[6.337540] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: DSP1: cirrus/cs35l41-dsp1-spk-prot-10431e02.wmfw: Fri 27 Aug 2021 14:58:19 W. Europe Daylight Time
[6.399070] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: DSP1: Firmware: 400a4 vendor: 0x2 v0.43.1, 2 algorithms
[6.399612] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: DSP1: 0: ID cd v29.63.1 XM@94 YM@e
[6.399623] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: DSP1: 1: ID f20b v0.1.0 XM@176 YM@0
[6.399629] zenbook kernel: cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: DSP1: spk-prot: C:\Users\tyang\Desktop\Product Setting\SmartAMP\ASUS\ASUS_Zenbook\UX3402\Tuning Release\220304\ASUS_UX3402_R_tuning_IDYC_ReDc_PICL_RTL_0304.bin
[6.427637] zenbook kernel: snd_hda_codec_realtek ehdaudio0D0: bound spi1-CSC3551:00-cs35l41-hda.1 (ops cs35l41_hda_comp_ops [snd_hda_scodec_cs35l41])

dsdt.dsl-old.patch

--- dsdt.dsl.old	2023-03-26 01:06:48.845795666 +0100
+++ dsdt.dsl	2023-03-26 12:00:45.643851841 +0200
@@ -18,7 +18,7 @@
  *     Compiler ID      "INTL"
  *     Compiler Version 0x20200717 (538969879)
  */
-DefinitionBlock ("", "DSDT", 2, "_ASUS_", "Notebook", 0x01072009)
+DefinitionBlock ("", "DSDT", 2, "_ASUS_", "Notebook", 0x0107200A)
 {
     /*
      * iASL Warning: There were 233 external control methods found during
@@ -90642,7 +90642,48 @@
             Method (_DIS, 0, NotSerialized)  // _DIS: Disable Device
             {
             }
+
+            Name (_DSD, Package ()   // _DSD: Device-Specific Data
+            {
+                ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), 
+                Package ()
+                {
+                    Package () { "cirrus,dev-index", Package () { Zero, One }},
+                    Package () { "reset-gpios", Package () {
+                       SPK1, One, Zero, Zero,
+                       SPK1, One, Zero, Zero,
+                    } },
+                    // Package () { "spk-id-gpios", Package () {
+                    //    SPK1, 0x02, Zero, Zero,
+                    //    SPK1, 0x02, Zero, Zero,
+                    // } },
+                    Package () { "cirrus,speaker-position",     Package () { Zero, One } },
+                    Package () { "cirrus,gpio1-func",           Package () { Zero, Zero } },
+                    Package () { "cirrus,gpio2-func",           Package () { 0x02, 0x02 } },
+                    // boost-type: 0 internal, 1 external
+                    Package () { "cirrus,boost-type",           Package () { Zero, Zero } },
+                    // boost-peak-milliamp: 1600 to 4500, increments of 50 mA
+                    Package () { "cirrus,boost-peak-milliamp",  Package () { 4500, 4500 } },
+                    // boost-ind-nanohenry: 1000 | 1200 | 1500 | 2200 nH
+                    Package () { "cirrus,boost-ind-nanohenry",  Package () { 1000, 1000 } },
+                    // boost-cap-microfarad: rounded to the nearest integer
+                    Package () { "cirrus,boost-cap-microfarad", Package () { 24, 24 } },
+                },
+            })
         }
+
+        Name (_DSD, Package ()
+        {
+            ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), 
+            Package ()
+            {
+                Package () { "cs-gpios", Package () { 
+                    Zero,                    // Native CS
+                    SPK1, Zero, Zero, Zero   // GPIO CS
+                } }
+            }
+        })
+
     }
 
     Scope (_SB.PC00.LPCB)

dsdt.dsl.patch

--- dsdt.dsl.old	2023-03-26 01:06:48.845795666 +0100
+++ dsdt.dsl	2023-03-26 12:00:45.643851841 +0200
@@ -18,7 +18,7 @@
  *     Compiler ID      "INTL"
  *     Compiler Version 0x20200717 (538969879)
  */
-DefinitionBlock ("", "DSDT", 2, "_ASUS_", "Notebook", 0x01072009)
+DefinitionBlock ("", "DSDT", 2, "_ASUS_", "Notebook", 0x0107200A)
 {
     /*
      * iASL Warning: There were 233 external control methods found during
@@ -90642,7 +90642,43 @@
             Method (_DIS, 0, NotSerialized)  // _DIS: Disable Device
             {
             }
+
+            Name (_DSD, Package ()   // _DSD: Device-Specific Data
+            {
+                ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), 
+                Package ()
+                {
+                    Package () { "cirrus,dev-index", Package () { Zero, One }},
+                    Package () { "reset-gpios", Package () {
+                       SPK1, One, Zero, Zero,
+                       SPK1, One, Zero, Zero,
+                    } },
+                    Package () { "spk-id-gpios", Package () {
+                       SPK1, 0x02, Zero, Zero,
+                       SPK1, 0x02, Zero, Zero,
+                    } },
+                    Package () { "cirrus,speaker-position",     Package () { Zero, One } },
+                    // gpioX-func: 0 not used, 1 VPSK_SWITCH, 2: INTERRUPT, 3: SYNC
+                    Package () { "cirrus,gpio1-func",           Package () { One, One } },
+                    Package () { "cirrus,gpio2-func",           Package () { 0x02, 0x02 } },
+                    // boost-type: 0 internal, 1 external
+                    Package () { "cirrus,boost-type",           Package () { One, One } },
+                },
+            })
         }
+
+        Name (_DSD, Package ()
+        {
+            ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), 
+            Package ()
+            {
+                Package () { "cs-gpios", Package () { 
+                    Zero,                    // Native CS
+                    SPK1, Zero, Zero, Zero   // GPIO CS
+                } }
+            }
+        })
+
     }
 
     Scope (_SB.PC00.LPCB)

ssdt_csc3551.aml

ssdt_csc3551.dsl

DefinitionBlock ("", "SSDT", 1, "CUSTOM", "CSC3551", 0x00000001)
{
    External (_SB_.PC00.SPI0, DeviceObj)
    External (_SB_.PC00.SPI0.SPK1, DeviceObj)

    Scope (_SB.PC00.SPI0.SPK1)
    {
        Name (_DSD, Package ()
        {
            ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
            Package ()
            {
                Package () { "cirrus,dev-index", Package () { Zero, One }},
                Package () { "reset-gpios", Package () {
                    SPK1, One, Zero, Zero,
                    SPK1, One, Zero, Zero
                } },
                Package () { "spk-id-gpios", Package () {
                    SPK1, 0x02, Zero, Zero,
                    SPK1, 0x02, Zero, Zero
                } },
                Package () { "cirrus,speaker-position", Package () { Zero, One } },
                // gpioX-func: 0 not used, 1 VPSK_SWITCH, 2: INTERRUPT, 3: SYNC
                Package () { "cirrus,gpio1-func", Package () { One, One } },
                Package () { "cirrus,gpio2-func", Package () { 0x02, 0x02 } },
                // boost-type: 0 internal, 1 external
                Package () { "cirrus,boost-type", Package () { One, One } }
            }
        })
    }

    Scope (_SB.PC00.SPI0)
    {
        Name (_DSD, Package ()
        {
            ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
            Package ()
            {
                Package () { "cs-gpios", Package () { 
                    Zero,                    // Native CS
                    SPK1, Zero, Zero, Zero   // GPIO CS
                } }
            }
        })
    }
}

this is getting to be a lengthy conversation. perhaps it would be more beneficial (and productive) to start a discord server or something?

https://discord.gg/RyDpPCJJ maybe? Le mer. 6 sept. 2023, 19:30, ctrlzero ***@***.***> a écrit :

…

***@***.**** commented on this gist. ------------------------------ this is getting to be a lengthy conversation. perhaps it would be more beneficial (and productive) to start a discord server or something? — Reply to this email directly, view it on GitHub <https://gist.github.com/lamperez/862763881c0e1c812392b5574727f6ff#gistcomment-4683084> or unsubscribe <https://github.com/notifications/unsubscribe-auth/AARUVKVEX4FB6A4L6QM5PLDXZCXLNBFKMF2HI4TJMJ2XIZLTSKBKK5TBNR2WLJDHNFZXJJDOMFWWLK3UNBZGKYLEL52HS4DFQKSXMYLMOVS2I5DSOVS2I3TBNVS3W5DIOJSWCZC7OBQXE5DJMNUXAYLOORPWCY3UNF3GS5DZVRZXKYTKMVRXIX3UPFYGLK2HNFZXIQ3PNVWWK3TUUZ2G64DJMNZZDAVEOR4XAZNEM5UXG5FFOZQWY5LFVEYTEMJVHE2TGMBTU52HE2LHM5SXFJTDOJSWC5DF> . You are receiving this email because you commented on the thread. Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub> .

@Messier104 that patch is already added on the kernel so there's no need to patch it manually unless you're using an old kernel. It would be a lot easier though to just update it. What distro and kernel version are you using?

@AlirezaDadrass same thing :) You need to have a kernel with the patches and then add the ssdt to the grub config. What kernel are you using currently? Let's get one thing figured out at a time ;)

uname -a
Hello again!
I'm using :
Linux fedora 6.4.13-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Wed Aug 30 17:07:31 UTC 2023 x86_64 GNU/Linux

@Messier104 that patch is already added on the kernel so there's no need to patch it manually unless you're using an old kernel. It would be a lot easier though to just update it. What distro and kernel version are you using?

I'm using kubuntu 22.04.3 LTS (ubuntu with kde plasma). For kernels I've used 6.5.1 (and before also 6.2). My version of the zenbook is ux3402VA (not ZA) if that makes a difference.

Above in the thread people talked about changing this line (I think in the kernel source code)

SND_PCI_QUIRK(0x1043, 0x16a3, "ASUS UX3402", ALC245_FIXUP_CS35L41_SPI_2),

Here the second hex number is different then standard for the VA w.r.t. ZA version (I think). I managed to find how to change this but when I tried compiling the kernel I can't get it to boot (it does show up in grub). I'm a bit of a newbie in regard to this kind of stuff though :/

edit:

I have finally managed to fix it!

For the UX3402VA version, it is really required to change the second hex number to 0x16a3 as in the line above (which can be found in the source of the kernel in "sound/pci/hda/patch_realtek.c" and then build and install the kernel. If you are an ultimate newbie in this regard and are on Ubuntu; following this step-by-step works: https://askubuntu.com/questions/1435591/correct-way-to-build-kernel-with-hardware-support-fix-patches-ubuntu-22-04-lts

Hi @lamperez I am using Zenbook S13 OLED using the same chip. The driver is working but the volume is too low. I would like to amplify the volume. Not sure if I need to use the DSDT method or just need to modify some value in /sys folder.

Also I just use the DSDT without any modification and got the

ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PC00.SPI0.SPK1], AE_NOT_FOUND (20230331/dswload2-162)

Not sure how could I troubleshoot and modify your file to get my device with the right amplification value. Thanks.

EDIT:

It turns out the audio on my laptop is supported by the kernel. The only needed thing is to put the firmware into the system (link). Now the volume is larger.

Thanks everyone in this thread! After a lot of iterations I managed to supply my Asus Zenbook 15 UM3504DA with working speakers!

For anyone facing the same issue with the Zenbook 15, give me a message; the working steps included

* Following the guide on the asus-linux website:  [here](https://asus-linux.org/wiki/cirrus-amps/)

* This very helpful comment, thanks! https://gist.github.com/lamperez/862763881c0e1c812392b5574727f6ff?permalink_comment_id=4582983#gistcomment-4582983

* building my own linux kernel with the patch from that comment

* changing the dsl config a number of times until I ended up on the following:

DefinitionBlock ("", "SSDT", 1, "CUSTOM", "CSC3551", 0x00000001)
{
    External (_SB.I2CB, DeviceObj)
    External (_SB.I2CB.SPKR, DeviceObj)

    Scope (_SB.I2CB.SPKR)
    {

        Method (_DIS, 0, NotSerialized)  // _DIS: Disable Device
        {
        }
        Name (_DSD, Package ()   // _DSD: Device-Specific Data
        {
            ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
            Package ()
            {
                Package () { "cirrus,dev-index", Package () { 0x0040, 0x0041 }},
                Package () { "reset-gpios", Package () {
                    SPKR, Zero, Zero, Zero,
                    SPKR, Zero, Zero, Zero,
                } },
                Package () { "spk-id-gpios", Package () {
                    SPKR, 0x02, Zero, Zero,
                    SPKR, 0x02, Zero, Zero,
                } },
                Package () { "cirrus,speaker-position",     Package () { Zero, One } },
                // gpioX-func: 0 not used, 1 VPSK_SWITCH, 2: INTERRUPT, 3: SYNC
                Package () { "cirrus,gpio1-func",           Package () { One, One } },
                Package () { "cirrus,gpio2-func",           Package () { 0x02, 0x02 } },
                // boost-type: 0 internal, 1 external
                Package () { "cirrus,boost-type",           Package () { One, One } },
                // boost-peak-milliamp: 1600 to 4500, increments of 50 mA
                //Package () { "cirrus,boost-peak-milliamp",  Package () { 3000, 3000 } },
                // boost-ind-nanohenry: 1000 | 1200 | 1500 | 2200 nH
                //Package () { "cirrus,boost-ind-nanohenry",  Package () { 1000, 1000 } },
                // boost-cap-microfarad: rounded to the nearest integer
                //Package () { "cirrus,boost-cap-microfarad", Package () { 15, 15 } },
            },
        })
    }


}

I am very greatful for all the guides and especially the asus-linux website.

Some problems I encountered along the way:

* The asus-linux website does not provide any information the needed kernel patch; I found that in the comments here

* The 6.5 kernel does have the patch for some models, but not mine

* There are many versions of the .dsl file floating around, I still don't know what is correct

Hi stevens, thanks for your contribution ! I have exactly the same laptop as you and tried following the instructions but still no sound, I remove pulseaudio as it was creating some pbs to use pipewire. Could you provide me with a rundown of everything you did to enable the speakers again ? The instructions are a bit unclear for a newbie like me. Thanks a lot :)

Here is what I did 👍

1. mkdir cirrus && cd cirrus
   sudo cat /sys/firmware/acpi/tables/DSDT > dsdt.dat
   iasl -d dsdt.dat

2. I created the patch by copying and pasting your code snippet in a file I created and called "ssdt_csc3551.dsl"

3.iasl -tc ssdt_csc3551.dsl
mkdir -p kernel/firmware/acpi
cp ssdt_csc3551.aml kernel/firmware/acpi
find kernel | cpio -H newc --create > patched_cirrus_acpi.cpio
sudo cp patched_cirrus_acpi.cpio /boot/patched_cirrus_acpi.cpio

4.I added this line "GRUB_EARLY_INITRD_LINUX_CUSTOM="patched_cirrus_acpi.cpio" to my grub file "/etc/default/grub"

5.I updated the grub config with "sudo grub2-mkconfig -o /etc/grub2-efi.cfg"

6.Reboot but still no sound, here is the dmseg :
dmesg |grep CSC3551
[ 6.024384] Serial bus multi instantiate pseudo device driver CSC3551:00: Instantiated 2 I2C devices.
[ 6.278538] cs35l41-hda i2c-CSC3551:00-cs35l41-hda.0: Error: ACPI _DSD Properties are missing for HID CSC3551.
[ 6.278545] cs35l41-hda i2c-CSC3551:00-cs35l41-hda.0: error -EINVAL: Platform not supported
[ 6.278574] cs35l41-hda: probe of i2c-CSC3551:00-cs35l41-hda.0 failed with error -22
[ 6.278700] cs35l41-hda i2c-CSC3551:00-cs35l41-hda.1: Error: ACPI _DSD Properties are missing for HID CSC3551.
[ 6.278703] cs35l41-hda i2c-CSC3551:00-cs35l41-hda.1: error -EINVAL: Platform not supported
[ 6.278723] cs35l41-hda: probe of i2c-CSC3551:00-cs35l41-hda.1 failed with error -22

I am surely missing something as there was a lot of options in the tutorias you linked.

Users of ux3402va, I finally submitted a fix for our model to the kernel so that we don't need to use kernel patches!
https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/commit/?id=07058dceb038a4b0dd49af07118b6b2a685bb4a6

Hey guys, I have a G634JZ (Rog Strix Scar 16 2023), using following ssdt(dsdt shows SPI3 and SPK1):

DefinitionBlock ("", "SSDT", 1, "CUSTOM", "CSC3551", 0x00000001)
{
    External (_SB_.PC00.SPI3, DeviceObj)
    External (_SB_.PC00.SPI3.SPK1, DeviceObj)

    Scope (_SB.PC00.SPI3.SPK1)
    {
        Name (_DSD, Package ()   // _DSD: Device-Specific Data
        {
            ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
            Package ()
            {
                Package () { "cirrus,dev-index", Package () { Zero, One }},
                Package () { "reset-gpios", Package () {
                                        SPK1, Zero, Zero, Zero,
                                        SPK1, Zero, Zero, Zero,
                } },
                Package () { "spk-id-gpios", Package () {
                                        SPK1, 0x02, Zero, Zero,
                                        SPK1, 0x02, Zero, Zero,
                } },
                Package () { "cirrus,speaker-position",     Package () { Zero, One } },
                // gpioX-func: 0 not used, 1 VPSK_SWITCH, 2: INTERRUPT, 3: SYNC
                Package () { "cirrus,gpio1-func",           Package () { One, One } },
                Package () { "cirrus,gpio2-func",           Package () { 0x02, 0x02 } },
                // boost-type: 0 internal, 1 external
                Package () { "cirrus,boost-type",           Package () { One, One } },
            },
        })
    }

    Scope (_SB.PC00.SPI3)
    {
        Name (_DSD, Package ()
        {
            ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
            Package ()
            {
                Package () { "cs-gpios", Package () {
                    Zero,                    // Native CS
                    SPK1, Zero, Zero, Zero   // GPIO CS
                } }
            }
        })
    }
}

The dmesg shows:

λ sudo dmesg|grep CSC3551
[    0.018409] ACPI: Table Upgrade: install [SSDT-CUSTOM- CSC3551]
[    0.018410] ACPI: SSDT 0x0000000039A7D000 0001A0 (v01 CUSTOM CSC3551  00000001 INTL 20221020)
[    5.780873] cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: Reset line busy, assuming shared reset
[    5.884861] cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: Failed waiting for OTP_BOOT_DONE: -110
[    5.897583] cs35l41-hda: probe of spi1-CSC3551:00-cs35l41-hda.0 failed with error -110
[    5.899702] cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: Reset line busy, assuming shared reset
[    6.003547] cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: Failed waiting for OTP_BOOT_DONE: -110
[    6.024392] cs35l41-hda: probe of spi1-CSC3551:00-cs35l41-hda.1 failed with error -110
[    6.024574] Serial bus multi instantiate pseudo device driver CSC3551:00: Instantiated 2 SPI devices.

The kernel patch of this device (1043:1caf) seems in the linux-g14 kernel patch code, which I'm using.

So anyone happened to fix the OTP_BOOT_DONE?

Can confirm this patch also works with the ROG Strix G814JZ model!
Appreciate it!

$ sudo dmesg | grep CSC3551                                                                                                                                                                                                 
[    0.018977] ACPI: Table Upgrade: install [SSDT-CUSTOM- CSC3551]
[    0.018979] ACPI: SSDT 0x00000000392AF000 0001A0 (v01 CUSTOM CSC3551  00000001 INTL 20220331)
[   35.442408] cs35l41-hda spi0-CSC3551:00-cs35l41-hda.0: Reset line busy, assuming shared reset
[   35.482909] cs35l41-hda spi0-CSC3551:00-cs35l41-hda.0: Cirrus Logic CS35L41 (35a40), Revision: B2
[   35.486857] cs35l41-hda spi0-CSC3551:00-cs35l41-hda.1: Reset line busy, assuming shared reset
[   35.530909] cs35l41-hda spi0-CSC3551:00-cs35l41-hda.1: Cirrus Logic CS35L41 (35a40), Revision: B2
[   35.532929] Serial bus multi instantiate pseudo device driver CSC3551:00: Instantiated 2 SPI devices.

Hey guys. Does ROG Strix G614JV spport? I Just find G614J and G614JI.

I solved my problem with https://github.com/badgers-ua/asus_zenbook_ux5304va_sound.
Thank you all.
But i have to do the whole process after each kernel update. I hope fedora team insert path in next version

For anyone having issues with the ASUS ROG STRIX G17 (2023) G713PV:

I've used the following dsl patch:

DefinitionBlock ("", "SSDT", 1, "CUSTOM", "CSC3551", 0x00000001)
{
    External (_SB_.I2CD, DeviceObj)
    External (_SB_.I2CD.SPKR, DeviceObj)

    Scope (_SB.I2CD.SPKR)
    {
        Name (_DSD, Package ()   // _DSD: Device-Specific Data
        {
            ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
            Package ()
            {
                Package () { "cirrus,dev-index", Package () { 0x0040, 0x0041 }},
                Package () { "reset-gpios", Package () {
                   SPKR, Zero, Zero, Zero,
                   SPKR, Zero, Zero, Zero,
                } },
                Package () { "spk-id-gpios", Package () {
                   SPKR, 0x02, Zero, Zero,
                   SPKR, 0x02, Zero, Zero,
                } },
                Package () { "cirrus,speaker-position",     Package () { Zero, One } },
                // gpioX-func: 0 not used, 1 VPSK_SWITCH, 2: INTERRUPT, 3: SYNC
                Package () { "cirrus,gpio1-func",           Package () { One, One } },
                Package () { "cirrus,gpio2-func",           Package () { 0x02, 0x02 } },
                // boost-type: 0 internal, 1 external
                Package () { "cirrus,boost-type",           Package () { One, One } },
            },
        })
    }
}

The following works with grub: Compile it with: iasl -tc speaker_amplifier_fix_patch.dsl, copy the resulting speaker_amplifier_fix_patch.aml file file to the boot partition (mostly /boot). Then add the entry acpi speaker_amplifier_fix_patch.aml to the grub config, e.g. to the /etc/grub.d/40_custom file. Don't forget to regenerate your grub config (sudo grub-mkconfig -o /boot/grub/grub.cfg on Arch).

You also need the newest linux-firmware version (20230804) (on arch as of writing only available via AUR linux-firmware-git). Also the newest kernel version (6.4.8) is necessary.

It is possible to get it working with older kernel by adding some modprobe options to snd-hda-intel, but I don't know which exactly. Instead of using the newest linux-firmware you can also create links to all files in /lib/firmware/cirrus containing -10431503- by replacing it with -10431d1f-, e.g. cs35l41-dsp1-spk-prot-10431d1f-spkid0-l0.bin -> cs35l41-dsp1-spk-prot-10431503-spkid0-l0.bin

Thanks to this gist and the information in https://asus-linux.org/wiki/cirrus-amps/#create-the-ssdt-patch

I can confirm that this works on ASUS ROG G713PV. Thank you
The only thing that i noticed notebook started to heat too match. It is very strange that one mp3 track playing on VLC force to heat notebook which is expecting to spread 300W (AMD 7845 + NVIDIA 4060).
Probably something wrong inside of schematic because of that patch.
Also sometimes VLC is playing with big noise.
So, yes, that works. But with some strange effects affected to notebook hardware

I solved my problem with https://github.com/badgers-ua/asus_zenbook_ux5304va_sound. Thank you all. But i have to do the whole process after each kernel update. I hope fedora team insert path in next version

I have been trying to get this to work for 2 days now. I patched and compiled the kernel. I use systemd-boot so I followed those instructions, made a patched.cpio, added it as an initrd flag in boot config, added it into the mkinitcpio. This is what I get when I boot my machine after doing everything.

❯ sudo dmesg | grep CSC3551
[sudo] password for kureta:
[    0.014530] ACPI: Table Upgrade: install [SSDT-CUSTOM- CSC3551]
[    0.014532] ACPI: SSDT 0x000000004F164000 0002D6 (v01 CUSTOM CSC3551  00000002 INTL 20230628)
[    3.033166] cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: Error: ACPI _DSD Properties are missing for HID CSC3551.
[    3.033174] cs35l41-hda spi1-CSC3551:00-cs35l41-hda.0: error -EINVAL: Platform not supported
[    3.033179] cs35l41-hda: probe of spi1-CSC3551:00-cs35l41-hda.0 failed with error -22
[    3.054463] cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: Error: ACPI _DSD Properties are missing for HID CSC3551.
[    3.054469] cs35l41-hda spi1-CSC3551:00-cs35l41-hda.1: error -EINVAL: Platform not supported
[    3.054473] cs35l41-hda: probe of spi1-CSC3551:00-cs35l41-hda.1 failed with error -22
[    3.054513] Serial bus multi instantiate pseudo device driver CSC3551:00: Instantiated 2 SPI devices.

I can also grep ACPI but that is a huge wall of text.

@kureta, you are applying the patch (ACPI: Table Upgrade: ...), but clearly the patch is not ok. Maybe the identifier in the Scope blocks are different for your computer model. You have to disassemble your ACPI, search for "CSC3551" and find the corresponding Scope block.

This is from my disassembled ACPI:

DefinitionBlock ("", "SSDT", 1, "_ASUS_", "SPKRAMPS", 0x00000002)
{
    External (_SB_.GPI0, DeviceObj)
    External (_SB_.PC00.SPI1, DeviceObj)

    Scope (\_SB.PC00.SPI1)
    {
        Device (SPK1)
        {
            Name (_HID, "CSC3551")  // _HID: Hardware ID
            Name (_SUB, "104316D3")  // _SUB: Subsystem ID
            Name (_UID, One)  // _UID: Unique ID
            Method (_CRS, 0, NotSerialized)  // _CRS: Current Resource Settings
            {
                Name (SBUF, ResourceTemplate ()
                {
                    SpiSerialBusV2 (0x0000, PolarityLow, FourWireMode, 0x08,
                        ControllerInitiated, 0x003D0900, ClockPolarityLow,
                        ClockPhaseFirst, "\\_SB.PC00.SPI1",
                        0x00, ResourceConsumer, , Exclusive,
                        )
                    SpiSerialBusV2 (0x0001, PolarityLow, FourWireMode, 0x08,
                        ControllerInitiated, 0x003D0900, ClockPolarityLow,
                        ClockPhaseFirst, "\\_SB.PC00.SPI1",
                        0x00, ResourceConsumer, , Exclusive,
                        )
                    GpioIo (Exclusive, PullUp, 0x0000, 0x0000, IoRestrictionOutputOnly,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x0017
                        }
                    GpioIo (Exclusive, PullDown, 0x0000, 0x0000, IoRestrictionOutputOnly,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x0131
                        }
                    GpioIo (Exclusive, PullUp, 0x0000, 0x0000, IoRestrictionInputOnly,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x012E
                        }
                    GpioIo (Shared, PullUp, 0x0064, 0x0000, IoRestrictionInputOnly,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x012F
                        }
                    GpioInt (Edge, ActiveBoth, Shared, PullUp, 0x0064,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x012F
                        }
                })
                Return (SBUF) /* \_SB_.PC00.SPI1.SPK1._CRS.SBUF */
            }

            Method (_STA, 0, NotSerialized)  // _STA: Status
            {
                Return (0x0F)
            }

            Method (_DIS, 0, NotSerialized)  // _DIS: Disable Device
            {
            }
        }
    }
}

and this is the patch I am using:

DefinitionBlock ("", "SSDT", 1, "CUSTOM", "CSC3551", 0x00000002)
{
    External (_SB_.GPI0, DeviceObj)
    External (_SB_.PC00.SPI1, DeviceObj)

    Scope (\_SB.PC00.SPI1)
    {
        Device (SPK1)
        {
            Name (_HID, "CSC3551")  // _HID: Hardware ID
            Name (_SUB, "104316D3")  // _SUB: Subsystem ID
            Name (_UID, One)  // _UID: Unique ID
            Method (_CRS, 0, NotSerialized)  // _CRS: Current Resource Settings
            {
                Name (SBUF, ResourceTemplate ()
                {
                    SpiSerialBusV2 (0x0000, PolarityLow, FourWireMode, 0x08,
                        ControllerInitiated, 0x003D0900, ClockPolarityLow,
                        ClockPhaseFirst, "\\_SB.PC00.SPI1",
                        0x00, ResourceConsumer, , Exclusive,
                        )
                    SpiSerialBusV2 (0x0001, PolarityLow, FourWireMode, 0x08,
                        ControllerInitiated, 0x003D0900, ClockPolarityLow,
                        ClockPhaseFirst, "\\_SB.PC00.SPI1",
                        0x00, ResourceConsumer, , Exclusive,
                        )
                    GpioIo (Exclusive, PullUp, 0x0000, 0x0000, IoRestrictionOutputOnly,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x0017
                        }
                    GpioIo (Exclusive, PullDown, 0x0000, 0x0000, IoRestrictionOutputOnly,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x0131
                        }
                    GpioIo (Exclusive, PullUp, 0x0000, 0x0000, IoRestrictionInputOnly,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x012E
                        }
                    GpioIo (Shared, PullUp, 0x0064, 0x0000, IoRestrictionInputOnly,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x012F
                        }
                    GpioInt (Edge, ActiveBoth, Shared, PullUp, 0x0064,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x012F
                        }
                })
                Return (SBUF) /* \_SB_.PC00.SPI1.SPK1._CRS.SBUF */
            }

            Method (_STA, 0, NotSerialized)  // _STA: Status
            {
                Return (0x0F)
            }

            Method (_DIS, 0, NotSerialized)  // _DIS: Disable Device
            {
            }

            Method (_DSD, 0, NotSerialized)  // _DSD: Device Specific Data
            {
                Return (Package ()
                    {
                        ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
                        Package ()
                        {
                            Package () { "cirrus,dev-index", Package () { Zero, One }},
                            Package () { "reset-gpios", Package () {
                            SPK1, One, Zero, Zero,
                            SPK1, One, Zero, Zero
                            } },
                            Package () { "spk-id-gpios", Package () {
                                SPK1, 0x02, Zero, Zero,
                                SPK1, 0x02, Zero, Zero,
                            } },
                            Package () { "cirrus,speaker-position", Package () { Zero, One } },
                            Package () { "cirrus,gpio1-func", Package () { One, One } },
                            Package () { "cirrus,gpio2-func", Package () { 0x02, 0x02 } },
                            // boost-type: 0 internal, 1 external
                            Package () { "cirrus,boost-type", Package () { One, One } },
                            // boost-peak-milliamp: 1600 to 4500, increments of 50 mA
                            //Package () { "cirrus,boost-peak-milliamp",  Package () { 3000, 3000 } },
                            // boost-ind-nanohenry: 1000 | 1200 | 1500 | 2200 nH
                            //Package () { "cirrus,boost-ind-nanohenry",  Package () { 1000, 1000 } },
                            // boost-cap-microfarad: rounded to the nearest integer
                            //Package () { "cirrus,boost-cap-microfarad", Package () { 15, 15 } },
                        }
                    }) /* \_SB_.PC00.SPI0.SPK1._DSD */
            }
        }

        Method (_DSD, 0, NotSerialized)  // _DSD: Device Specific Data
        {
            Return (Package ()
                {
                    ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
                    Package ()
                    {
                        Package () { "cs-gpios", Package () { 
                            Zero,                    // Native CS
                            SPK1, Zero, Zero, Zero   // GPIO CS
                        } }
                    }
                }) /* \_SB_.PC00.SPI0.SPK1._DSD */
        }
    }
}

and these are the commands I use to apply it all:

iasl -sa ssdt_csc3551.dsl
mkdir -p kernel/firmware/acpi
cp ssdt_csc3551.aml kernel/firmware/acpi/ssdt_csc3551.aml
find kernel | cpio -H newc --create >acpi_override
sudo cp acpi_override /boot/
sudo mkinitcpio -p linux65-tkg-cfs

I cannot find the problem.

I have finally found the problem and it's working. Only the first lines were different. So I changed the patch to DefinitionBlock ("", "SSDT", 1, "_ASUS_", "SPKRAMPS", 0x00000003). Apparently the last number is OEM revision number and it should be incremented. now it works! Thank you everyone in this thread!

I solved my problem with https://github.com/badgers-ua/asus_zenbook_ux5304va_sound. Thank you all. But i have to do the whole process after each kernel update. I hope fedora team insert path in next version

Hey I get page not found when I try to open your link.

try this one https://github.com/badgers-ua/asus_zenbook_ux5304va_sound

Working ssdt-csc3551.dsl for ASUS Zenbook UM3402Y (the speakers are connected to I2C, not SPI).
Follow the rest from https://github.com/badgers-ua/asus_zenbook_ux5304va_sound

DefinitionBlock ("", "SSDT", 1, "CUSTOM", "CS3551", 0x0000300A)
{

    External (_SB_.I2CD, DeviceObj)
    External (_SB_.I2CD.SPKR, DeviceObj)

    Scope (_SB.I2CD.SPKR)
    {
        Method (_DSD, 0, NotSerialized)  // _DSD: Device Specific Data
        {
            Return (Package ()
                {
                    ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
                    Package ()
                    {
                        Package () { "cirrus,dev-index", Package () { 0x0040, 0x0041 }},
                        Package () { "reset-gpios", Package () {
                           SPKR, Zero, Zero, Zero,
                           SPKR, Zero, Zero, Zero
                        } },
                        Package () { "spk-id-gpios", Package () {
                             SPKR, 0x02, Zero, Zero,
                             SPKR, 0x02, Zero, Zero,
                        } },
                        Package () { "cirrus,speaker-position", Package () { Zero, One } },
                        Package () { "cirrus,gpio1-func", Package () { One, One } },
                        Package () { "cirrus,gpio2-func", Package () { 0x02, 0x02 } },
                        // boost-type: 0 internal, 1 external
                        Package () { "cirrus,boost-type", Package () { One, One } },
                        // boost-peak-milliamp: 1600 to 4500, increments of 50 mA
                        //Package () { "cirrus,boost-peak-milliamp",  Package () { 3000, 3000 } },
                        // boost-ind-nanohenry: 1000 | 1200 | 1500 | 2200 nH
                        //Package () { "cirrus,boost-ind-nanohenry",  Package () { 1000, 1000 } },
                        // boost-cap-microfarad: rounded to the nearest integer
                        //Package () { "cirrus,boost-cap-microfarad", Package () { 15, 15 } },
                    }
                })
        }
    }

    Scope (_SB.I2CD)
    {
        Method (_DSD, 0, NotSerialized)  // _DSD: Device Specific Data
        {
            Return (Package ()
                {
                    ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
                    Package ()
                    {
                        Package () { "cs-gpios", Package () { 
                            Zero,                    // Native CS
                            SPKR, Zero, Zero, Zero   // GPIO CS
                        } }
                    }
                })
        }
    }
}

Working ssdt-csc3551.dsl for ASUS Zenbook UM3402Y (the speakers are connected to I2C, not SPI). Follow the rest from https://github.com/badgers-ua/asus_zenbook_ux5304va_sound

DefinitionBlock ("", "SSDT", 1, "CUSTOM", "CS3551", 0x0000300A)
{

    External (_SB_.I2CD, DeviceObj)
    External (_SB_.I2CD.SPKR, DeviceObj)

    Scope (_SB.I2CD.SPKR)
    {
        Method (_DSD, 0, NotSerialized)  // _DSD: Device Specific Data
        {
            Return (Package ()
                {
                    ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
                    Package ()
                    {
                        Package () { "cirrus,dev-index", Package () { 0x0040, 0x0041 }},
                        Package () { "reset-gpios", Package () {
                           SPKR, Zero, Zero, Zero,
                           SPKR, Zero, Zero, Zero
                        } },
                        Package () { "spk-id-gpios", Package () {
                             SPKR, 0x02, Zero, Zero,
                             SPKR, 0x02, Zero, Zero,
                        } },
                        Package () { "cirrus,speaker-position", Package () { Zero, One } },
                        Package () { "cirrus,gpio1-func", Package () { One, One } },
                        Package () { "cirrus,gpio2-func", Package () { 0x02, 0x02 } },
                        // boost-type: 0 internal, 1 external
                        Package () { "cirrus,boost-type", Package () { One, One } },
                        // boost-peak-milliamp: 1600 to 4500, increments of 50 mA
                        //Package () { "cirrus,boost-peak-milliamp",  Package () { 3000, 3000 } },
                        // boost-ind-nanohenry: 1000 | 1200 | 1500 | 2200 nH
                        //Package () { "cirrus,boost-ind-nanohenry",  Package () { 1000, 1000 } },
                        // boost-cap-microfarad: rounded to the nearest integer
                        //Package () { "cirrus,boost-cap-microfarad", Package () { 15, 15 } },
                    }
                })
        }
    }

    Scope (_SB.I2CD)
    {
        Method (_DSD, 0, NotSerialized)  // _DSD: Device Specific Data
        {
            Return (Package ()
                {
                    ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
                    Package ()
                    {
                        Package () { "cs-gpios", Package () { 
                            Zero,                    // Native CS
                            SPKR, Zero, Zero, Zero   // GPIO CS
                        } }
                    }
                })
        }
    }
}

Hi, I have an Asus Zenbook UM3402YAR-UM3402YA laptop I've purchased a week ago. I have installed the Ubuntu 23.10 and have no sound from the speakers. I've been searching over the internet and have come across this community and this post dealing with the issuue. Unfortunately I have no practical experience on how to make a patch to the kernel that is required. Is there a chance that you help me somehow (maybe through a remote connection or similar)? Really appreciate all the help...

For those with an ASUS UX7602ZM laptop, you can check the guide & SSDT patches here: https://github.com/alex-spataru/asus_zenbook_ux7602zm_sound.

Basically, getting sound to work boils down to two things:

1. Modifying the patch_realtek.c file and add the following quirck SND_PCI_QUIRK(0x1043, 0x1f62, "ASUS UX7602ZM", ALC245_FIXUP_CS35L41_SPI_2).
2. Compiling and installing the SSDT patch in a very similar way that with the other Zenbook models.

Thanks everyone for helping me find a way to get the sound working with my laptop, happy hacking!

Folks, Can anyone help me? After patching the SSDT for my G634JY on Fedora 38 with 6.6.0-61.rog.fc38.x86_64 I get the following in the dmesg; I have very low volume from rear-speakers and front speakers doesn't work.

[    0.019213] ACPI: Table Upgrade: install [SSDT-CUSTOM- CSC3551]
[    0.019215] ACPI: SSDT 0x0000000039533000 0001A0 (v01 CUSTOM CSC3551  00000001 INTL 20220331)
[   16.010867] Serial bus multi instantiate pseudo device driver CSC3551:00: Instantiated 2 SPI devices.
[   16.134141] cs35l41-hda spi0-CSC3551:00-cs35l41-hda.0: Using extra _DSD properties, bypassing _DSD in ACPI
[   16.134143] cs35l41-hda spi0-CSC3551:00-cs35l41-hda.0: error -ENOENT: Failed to get reset GPIO
[   16.158265] cs35l41-hda: probe of spi0-CSC3551:00-cs35l41-hda.0 failed with error -2
[   16.158384] cs35l41-hda spi0-CSC3551:00-cs35l41-hda.1: Using extra _DSD properties, bypassing _DSD in ACPI
[   16.158387] cs35l41-hda spi0-CSC3551:00-cs35l41-hda.1: error -ENOENT: Failed to get reset GPIO
[   16.176295] cs35l41-hda: probe of spi0-CSC3551:00-cs35l41-hda.1 failed with error -2

This is my patch

DefinitionBlock ("", "SSDT", 1, "CUSTOM", "CSC3551", 0x00000001)
{
    External (_SB_.PC00.SPI3, DeviceObj)
    External (_SB_.PC00.SPI3.SPK1, DeviceObj)

    Scope (_SB.PC00.SPI3.SPK1)
    {
        Name (_DSD, Package ()
        {
            ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
            Package ()
            {
                Package () { "cirrus,dev-index", Package () { Zero, One }},
                Package () { "reset-gpios", Package () {
		            SPK1, Zero, Zero, Zero,
		            SPK1, Zero, Zero, Zero
                } },
                Package () { "spk-id-gpios", Package () {
                    SPK1, 0x02, Zero, Zero,
                    SPK1, 0x02, Zero, Zero
                } },
                Package () { "cirrus,speaker-position",		Package () { Zero, One } },
                Package () { "cirrus,gpio1-func",			Package () { One, One } },
                Package () { "cirrus,gpio2-func",			Package () { 0x02, 0x02 } },
                Package () { "cirrus,boost-type",			Package () { One, One } }
            }
        })
    }

    Scope (_SB.PC00.SPI3)
    {
        Name (_DSD, Package ()
        {
            ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
            Package ()
            {
                Package () { "cs-gpios", Package () {
                    Zero,                    // Native CS
                    SPK1, Zero, Zero, Zero   // GPIO CS
                } }
            }
        })
    }
}

I tried,

SPK1, One, Zero, Zero,
SPK1, One, Zero, Zero,

Package () { "cirrus,gpio1-func",           Package () { Zero, Zero } },

And get the same result. Any help would be much appreciated.

By the way, I also contacted ASUS, and their (rephrased & summarized) response was:

We're sorry for the limited Linux support and encourage you to reach out to the software manufacturer for more comprehensive assistance, as they often provide substantial online support.

I already asked for a contact from the "software manufacturer" they mentioned. I might be naive, but hopefully we can pressure them into fixing their ACPI tables...

@abishekmuthian Could you please provide us with your original SSDT7 dump? In my case it was necessary to modify my SSDT dump and adding the _DST methods without modifying anything else, I also needed to modify the patch_realtek.c file in the Linux kernel.

@alex-spataru Thank you for your reply and thank you for contacting Asus on behalf of us, I think if we all contact they'll feel the need to address the Linux support issues.

Here's my original SSDT7.dsl .

Here's my original DSDT SPI3 scope :

Scope (_SB.PC00.SPI3)
    {
        Device (SPK1)
        {
            Name (_HID, "CSC3551")  // _HID: Hardware ID
            Name (_SUB, "10431CAF")  // _SUB: Subsystem ID
            Name (_UID, One)  // _UID: Unique ID
            Method (_CRS, 0, NotSerialized)  // _CRS: Current Resource Settings
            {
                Name (SBUF, ResourceTemplate ()
                {
                    SpiSerialBusV2 (0x0000, PolarityLow, FourWireMode, 0x08,
                        ControllerInitiated, 0x003D0900, ClockPolarityLow,
                        ClockPhaseFirst, "\\_SB.PC00.SPI3",
                        0x00, ResourceConsumer, , Exclusive,
                        )
                    SpiSerialBusV2 (0x0001, PolarityLow, FourWireMode, 0x08,
                        ControllerInitiated, 0x003D0900, ClockPolarityLow,
                        ClockPhaseFirst, "\\_SB.PC00.SPI3",
                        0x00, ResourceConsumer, , Exclusive,
                        )
                    GpioIo (Exclusive, PullUp, 0x0000, 0x0000, IoRestrictionOutputOnly,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x01D4
                        }
                    GpioIo (Exclusive, PullDown, 0x0000, 0x0000, IoRestrictionOutputOnly,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x0140
                        }
                    GpioIo (Exclusive, PullUp, 0x0000, 0x0000, IoRestrictionInputOnly,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x00C0
                        }
                    GpioIo (Shared, PullUp, 0x0064, 0x0000, IoRestrictionInputOnly,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x0141
                        }
                    GpioInt (Edge, ActiveBoth, Shared, PullUp, 0x0064,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x0141
                        }
                })
                Return (SBUF) /* \_SB_.PC00.SPI3.SPK1._CRS.SBUF */
            }

            Method (_STA, 0, NotSerialized)  // _STA: Status
            {
                Return (0x0F)
            }

            Method (_DIS, 0, NotSerialized)  // _DIS: Disable Device
            {
            }
        }
    }

Users of ux3402va, I finally submitted a fix for our model to the kernel so that we don't need to use kernel patches! https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/commit/?id=07058dceb038a4b0dd49af07118b6b2a685bb4a6

Hello; do you have any idea of when the patch will be available? I'm running
uname -a  ✔ Linux andrey-zenbookux3402va 6.5.9-1-MANJARO #1 SMP PREEMPT_DYNAMIC Wed Oct 25 13:14:27 UTC 2023 x86_64 GNU/Linux
and have no sound at the moment.
Thanks a lot for your effort!

@abishekmuthian

I believe your SSDT patch should be:

DefinitionBlock ("", "SSDT", 1, "CUSTOM", "CSC3551", 0x00000002)
{
    External (_SB_.PC00.SPI3, DeviceObj)
    External (_SB_.PC00.SPI3.SPK1, DeviceObj)
    
    Scope (_SB.PC00.SPI3)
    {
        Device (SPK1)
        {
            Name (_HID, "CSC3551")  // _HID: Hardware ID
            Name (_SUB, "10431CAF")  // _SUB: Subsystem ID
            Name (_UID, One)  // _UID: Unique ID
            Method (_CRS, 0, NotSerialized)  // _CRS: Current Resource Settings
            {
                Name (SBUF, ResourceTemplate ()
                {
                    SpiSerialBusV2 (0x0000, PolarityLow, FourWireMode, 0x08,
                        ControllerInitiated, 0x003D0900, ClockPolarityLow,
                        ClockPhaseFirst, "\\_SB.PC00.SPI3",
                        0x00, ResourceConsumer, , Exclusive,
                        )
                    SpiSerialBusV2 (0x0001, PolarityLow, FourWireMode, 0x08,
                        ControllerInitiated, 0x003D0900, ClockPolarityLow,
                        ClockPhaseFirst, "\\_SB.PC00.SPI3",
                        0x00, ResourceConsumer, , Exclusive,
                        )
                    GpioIo (Exclusive, PullUp, 0x0000, 0x0000, IoRestrictionOutputOnly,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x01D4
                        }
                    GpioIo (Exclusive, PullDown, 0x0000, 0x0000, IoRestrictionOutputOnly,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x0140
                        }
                    GpioIo (Exclusive, PullUp, 0x0000, 0x0000, IoRestrictionInputOnly,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x00C0
                        }
                    GpioIo (Shared, PullUp, 0x0064, 0x0000, IoRestrictionInputOnly,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x0141
                        }
                    GpioInt (Edge, ActiveBoth, Shared, PullUp, 0x0064,
                        "\\_SB.GPI0", 0x00, ResourceConsumer, ,
                        )
                        {   // Pin list
                            0x0141
                        }
                })
                Return (SBUF) /* \_SB_.PC00.SPI3.SPK1._CRS.SBUF */
            }

            Method (_STA, 0, NotSerialized)  // _STA: Status
            {
                Return (0x0F)
            }

            Method (_DIS, 0, NotSerialized)  // _DIS: Disable Device
            {
            }
            
            Method (_DSD, 0, NotSerialized)  // _DSD: Device Specific Data
            {
                Return (Package ()
                    {
                        ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
                        Package ()
                        {
                            Package () { "cirrus,dev-index", Package () { Zero, One }},
                            Package () { "reset-gpios", Package () {
                            SPK1, One, Zero, Zero,
                            SPK1, One, Zero, Zero
                            } },
                            Package () { "spk-id-gpios", Package () {
                                SPK1, 0x02, Zero, Zero,
                                SPK1, 0x02, Zero, Zero,
                            } },
                            Package () { "cirrus,speaker-position", Package () { Zero, One } },
                            Package () { "cirrus,gpio1-func", Package () { One, One } },
                            Package () { "cirrus,gpio2-func", Package () { 0x02, 0x02 } },
                            // boost-type: 0 internal, 1 external
                            Package () { "cirrus,boost-type", Package () { One, One } },
                            // boost-peak-milliamp: 1600 to 4500, increments of 50 mA
                            //Package () { "cirrus,boost-peak-milliamp",  Package () { 3000, 3000 } },
                            // boost-ind-nanohenry: 1000 | 1200 | 1500 | 2200 nH
                            //Package () { "cirrus,boost-ind-nanohenry",  Package () { 1000, 1000 } },
                            // boost-cap-microfarad: rounded to the nearest integer
                            //Package () { "cirrus,boost-cap-microfarad", Package () { 15, 15 } },
                        }
                    })
            }
        }
        
        Method (_DSD, 0, NotSerialized)  // _DSD: Device Specific Data
        {
            Return (Package ()
                {
                    ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
                    Package ()
                    {
                        Package () { "cs-gpios", Package () { 
                            Zero,                    // Native CS
                            SPK1, Zero, Zero, Zero   // GPIO CS
                        } }
                    }
                })
        }
    }
}

If after applying the SSDT patch your speakers still do not work, it might be necessary to modify and install a custom Linux kernel, to do so:

1. Pull the kernel source code.

2. Open kernel_source_root/sound/pci/hda/patch_realtek.c with your text editor and search for ALC245_FIXUP_CS35L41_SPI_2 until you find a list of definitions like this:

SND_PCI_QUIRK(0x1043, 0x3a50, "ASUS G834JYR/JZR", ALC245_FIXUP_CS35L41_SPI_2),

3. Insert the configuration for your laptop:

SND_PCI_QUIRK(0x1043, 0x1caf, "ASUS G634JY", ALC245_FIXUP_CS35L41_SPI_2),

Edit: I just took a look at the kernel source code, it already has the following quirk for your laptop model:

SND_PCI_QUIRK(0x1043, 0x1caf, "ASUS G634JYR/JZR", ALC285_FIXUP_ASUS_SPI_REAR_SPEAKERS),

In that case, it might be only necessary to add the modified SSDT. I am not really sure if the ALC245_FIXUP_CS35L41_SPI_2 fixup is required for your model.

Please let me know if it works for you!

@alex-spataru Thank you so much for your effort, dmesg now shows Reset line busy, assuming shared reset which I don't think I had got before but the audio is still from rear speakers with very low volume.

[    0.018671] ACPI: Table Upgrade: install [SSDT-CUSTOM- CSC3551]
[    0.018673] ACPI: SSDT 0x0000000039533000 0002DE (v01 CUSTOM CSC3551  00000002 INTL 20220331)
[   20.698885] Serial bus multi instantiate pseudo device driver CSC3551:00: Instantiated 2 SPI devices.
[   20.790197] cs35l41-hda spi0-CSC3551:00-cs35l41-hda.0: Using extra _DSD properties, bypassing _DSD in ACPI
[   20.790199] cs35l41-hda spi0-CSC3551:00-cs35l41-hda.0: Reset line busy, assuming shared reset
[   20.892699] cs35l41-hda spi0-CSC3551:00-cs35l41-hda.0: Failed waiting for OTP_BOOT_DONE: -110
[   20.905002] cs35l41-hda: probe of spi0-CSC3551:00-cs35l41-hda.0 failed with error -110
[   20.905231] cs35l41-hda spi0-CSC3551:00-cs35l41-hda.1: Using extra _DSD properties, bypassing _DSD in ACPI
[   20.905233] cs35l41-hda spi0-CSC3551:00-cs35l41-hda.1: Reset line busy, assuming shared reset
[   21.007673] cs35l41-hda spi0-CSC3551:00-cs35l41-hda.1: Failed waiting for OTP_BOOT_DONE: -110
[   21.020006] cs35l41-hda: probe of spi0-CSC3551:00-cs35l41-hda.1 failed with error -110

In the asus linux discord channel, @v-gu has made an old post telling how he fixed OTP_BOOT_DONE error for his G634JZ ,

He states -

After some trial and error, I found that my version of the laptop requires reset-gpios to be on , One, Zero, Zero instead of , Zero, Zero, Zero. So I edited the second patch on the guide and add "10431CAF" to the if condition, with:

+    if (strcmp(cs35l41->acpi_subsystem_id, "10431473") == 0
+        || strcmp(cs35l41->acpi_subsystem_id, "10431483") == 0
+        || strcmp(cs35l41->acpi_subsystem_id, "10431493") == 0
+        || strcmp(cs35l41->acpi_subsystem_id, "10431CAF") == 0) {
+        cs35l41->reset_gpio = gpiod_get_index(physdev, NULL, 1, GPIOD_OUT_HIGH);
+    } else {
+        cs35l41->reset_gpio = gpiod_get_index(physdev, NULL, 0, GPIOD_OUT_HIGH);
+    }

Since I was running rog 6.6 kernel I thought I need not mess with the kernel, I guess now I have to attempt the above changes to the patch?
I

UPDATE: Sound on the ASUS GV302XA is working! The reason the Cirrus firmware wasn't loading was I didn't add the laptop's subsystem ID in /sound/pci/hda/patch_realtek.c. Once I did that, it worked. I used the following line:

SND_PCI_QUIRK(0x1043, 0x1533, "ASUS GV302XA", ALC294_FIXUP_CS35L41_I2C_2),

It also works with ALC287_FIXUP_CS35L41_I2C_2 and ALC285_FIXUP_ASUS_I2C_HEADSET_MIC. I don't know if these are the best quirks to use, but ALC294_FIXUP_CS35L41_I2C_2 seems to work okay so far!
Quick side note: Sound actually works on this laptop without the ACPI patch (only the subsystem ID in the kernel is needed), but the sound will only be mono out of both speakers. To get stereo, you need the additional cpio loaded during boot.

Original Post:

Hey all, I picked up an ASUS ROG Flow X13 (2023) this week from Best Buy in the US. The model number is GLV302X (actually GV302XA) and it has the two Cirrus amps connected via I2C. The laptop uses an AMD Ryzen 9 7940HS CPU. The subsystem ID for this laptop is 1043:1533.

I'm running Debian trixie with a 6.5.0 kernel. Although I was able to apply the ACPI patch using systemd-boot and get no dmesg errors, the firmware is never loaded for the amps. I copied the entire 'cirrus' directory from the linux-firmware git to my system, but no firmware load is even attempted. I have not patched the kernel yet:

[    0.002898] ACPI: Table Upgrade: install [SSDT-CUSTOM- CSC3551]
[    0.002900] ACPI: SSDT 0x00000000BB4CE000 00014D (v01 CUSTOM CSC3551  00000001 INTL 20230628)
[    9.601723] Serial bus multi instantiate pseudo device driver CSC3551:00: Instantiated 2 I2C devices.
[    9.719731] cs35l41-hda i2c-CSC3551:00-cs35l41-hda.0: Cirrus Logic CS35L41 (35a40), Revision: B2
[    9.719913] cs35l41-hda i2c-CSC3551:00-cs35l41-hda.1: Reset line busy, assuming shared reset
[    9.774618] cs35l41-hda i2c-CSC3551:00-cs35l41-hda.1: Cirrus Logic CS35L41 (35a40), Revision: B2

That's all I get.

Here's the relevant section from the ACPI dump:

Scope (_SB.I2CD)
{
	Device (SPKR)
	{
		Name (_HID, "CSC3551")  // _HID: Hardware ID
		Name (_SUB, "10431533")  // _SUB: Subsystem ID
		Name (_UID, One)  // _UID: Unique ID
		Method (_CRS, 0, NotSerialized)  // _CRS: Current Resource Settings
		{
			Name (RBUF, ResourceTemplate ()
			{
				I2cSerialBusV2 (0x0040, ControllerInitiated, 0x000F4240,
					AddressingMode7Bit, "\\_SB.I2CD",
					0x00, ResourceConsumer, , Exclusive,
					)
				I2cSerialBusV2 (0x0041, ControllerInitiated, 0x000F4240,
					AddressingMode7Bit, "\\_SB.I2CD",
					0x00, ResourceConsumer, , Exclusive,
					)
				GpioIo (Exclusive, PullDown, 0x0000, 0x0000, IoRestrictionOutputOnly,
					"\\_SB.GPIO", 0x00, ResourceConsumer, ,
					)
					{   // Pin list
						0x005A
					}
				GpioIo (Exclusive, PullUp, 0x0000, 0x0000, IoRestrictionInputOnly,
					"\\_SB.GPIO", 0x00, ResourceConsumer, ,
					)
					{   // Pin list
						0x008E
					}
				GpioIo (Shared, PullUp, 0x0064, 0x0000, IoRestrictionInputOnly,
					"\\_SB.GPIO", 0x00, ResourceConsumer, ,
					)
					{   // Pin list
						0x0054
					}
				GpioInt (Edge, ActiveBoth, Shared, PullUp, 0x0064,
					"\\_SB.GPIO", 0x00, ResourceConsumer, ,
					)
					{   // Pin list
						0x0054
					}
			})
			Return (RBUF) /* \_SB_.I2CD.SPKR._CRS.RBUF */
		}

		Method (_STA, 0, NotSerialized)  // _STA: Status
		{
			Return (0x0F)
		}

		Method (_DIS, 0, NotSerialized)  // _DIS: Disable Device
		{
		}
	}
}

Has anyone else encountered this problem?

Hello, G814JV has been processed according to the steps described by https://asus-linux.org/wiki/cirrus-amps/. Although there is sound, the models that have been tried have current sounds.What should I do?

Hi everyone. Thanks to all for contributing and trying to get things work. I read this thread three times, asus-linux.org, and several other git pages. I'm lost now...

Sum up:

• I have a fresh Asus Zenbook 14 OLED UX3402-VA model (german)
• I updated to BIOS 302 (latest available from Asus website as of today)
• Secure boot is off
• Running an Ubuntu 23.10 with kernel 6.5.0-13-generic

What I did up to now...

• with the output of dsdt.dsl grepping for 3551 I created/modified the ssdt-csc3551.dsl to the one at the end of this comment
• I created the aml file from it and copied it to /boot
• I copied and chmod +x the acpi_01 file to /etc/default/grub.d
• sudo update-grub
• reboot: sound not working yet

I don't know if the ubuntu kernel already has the patch for asus sound included nor how to find it out...

Do you have any hint how to get the laptop sound to work?

here's the dsl file:

DefinitionBlock ("", "SSDT", 1, "CUSTOM", "CSC3551", 0x00000001)
{
    External (_SB_.PC00.SPI0, DeviceObj)
    External (_SB_.PC00.SPI0.SPK1, DeviceObj)

    Scope (_SB.PC00.SPI0.SPK1)
    {
        Name (_DSD, Package ()
        {
            ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
            Package ()
            {
                Package () { "cirrus,dev-index", Package () { Zero, One }},
                Package () { "reset-gpios", Package () {
                    SPK1, One, Zero, Zero,
                    SPK1, One, Zero, Zero
                } },
                Package () { "spk-id-gpios", Package () {
                    SPK1, 0x02, Zero, Zero,
                    SPK1, 0x02, Zero, Zero
                } },
                Package () { "cirrus,speaker-position", Package () { Zero, One } },
                // gpioX-func: 0 not used, 1 VPSK_SWITCH, 2: INTERRUPT, 3: SYNC
                Package () { "cirrus,gpio1-func", Package () { One, One } },
                Package () { "cirrus,gpio2-func", Package () { 0x02, 0x02 } },
                // boost-type: 0 internal, 1 external
                Package () { "cirrus,boost-type", Package () { One, One } }
            }
        })
    }

    Scope (_SB.PC00.SPI0)
    {
        Name (_DSD, Package ()
        {
            ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
            Package ()
            {
                Package () { "cs-gpios", Package () { 
                    Zero,                    // Native CS
                    SPK1, Zero, Zero, Zero   // GPIO CS
                } }
            }
        })
    }
}

here's the relevant grepped part searching for 3551:

Scope (_SB.PC00.SPI0)
    {
        Device (SPK1)
        {
            Name (_HID, "CSC3551")  // _HID: Hardware ID
            Name (_SUB, "104316A3")  // _SUB: Subsystem ID
            Name (_UID, One)  // _UID: Unique ID
            Method (_CRS, 0, NotSerialized)  // _CRS: Current Resource Settings
            {
...