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FriendlyElec NanoPi R5S Linux PTP Support
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build-friendlywrt.md

Build Notes

Environment

Use systemd-nspawn on Arch Linux with debootstrap:

sudo debootstrap --include=systemd-container --components=main,universe jammy ubuntu22.04-rk3568 http://archive.ubuntu.com/ubuntu/

Packages to install:

apt install wget curl git python2 android-sdk-libsparse-utils build-essential bison bc cpio time gawk unzip unzip libncurses-dev file python3-distutils

Load environment:

sudo systemd-nspawn -b --bind ~/tmp/repos/sd-fuse_rk3568:/build/sd-fuse_rk3568 -D ~/tmp/ubuntu22.04-rk3568

Successful build

./build.sh rk3568.mk
...
[INFO]: prepare rootfs.img ...                                                         
WARNING: tempfile is deprecated; consider using mktemp instead.                       
Creating filesystem with parameters:                                                                                                                                         
    Size: 444596224                                                                   
    Block size: 4096                                                                  
    Blocks per group: 32768                                                           
    Inodes per group: 6784                                                            
    Inode size: 256                                                                                                                                                          
    Journal blocks: 1696                                                                                                                                                     
    Label: rootfs                                                                                                                                                            
    Blocks: 108544                                                                                                                                                           
    Block groups: 4                                                                                                                                                          
    Reserved block group size: 31                                                                                                                                            
    Suggest size: 406847488                                                                                                                                                  
Created filesystem with 10881/27136 inodes and 94843/108544 blocks                                                                                                           
'/build/friendlywrt22-rk3568/scripts/sd-fuse/prebuilt/parameter.template' -> 'friendlywrt22/parameter.txt'                                                                   
generating friendlywrt22/parameter.txt done.                                          
0                                                                                     
generating friendlywrt22/rootfs.img done.                                             
0                                                                                                                                                                            
Generating empty userdata.img (size:104857600)                                        
Creating filesystem with parameters:                                                  
    Size: 104857600                                                                                                                                                          
    Block size: 4096                                                                  
    Blocks per group: 32768                                                                                                                                                  
    Inodes per group: 6400                                                                                                                                                   
    Inode size: 256                                                                                                                                                          
    Journal blocks: 1024                                                                                                                                                     
    Label: userdata                                                                                                                                                          
    Blocks: 25600                                                                                                                                                            
    Block groups: 1                                                                                                                                                          
    Reserved block group size: 7                                                                                                                                             
    Suggest size: 25165824                                                                                                                                                   
Created filesystem with 11/6400 inodes and 1438/25600 blocks                                                                                                                 
-----------------------------------------                                                                                                                                    
rootfs dir:                                                                           
        /build/friendlywrt22-rk3568/scripts/sd-fuse/out/rootfs.8yKkb9usV               
boot dir:                                                                              
        /build/friendlywrt22-rk3568/scripts/sd-fuse/out/boot.cVJLeBie5                 
-----------------------------------------                                              
Creating RAW image: out/friendlywrt_22.03_20220925_rk3568_arm64_sd.img (1000 MB)       
---------------------------------                                                      
0+0 records in                                                                         
0+0 records out                                                                        
0 bytes copied, 2.0559e-05 s, 0.0 kB/s                                                 
----------------------------------------------------------------                       
[out/friendlywrt_22.03_20220925_rk3568_arm64_sd.img] capacity = 953MB, 999999488 bytes                                                                                        
current out/friendlywrt_22.03_20220925_rk3568_arm64_sd.img partition:                  
----------------------------------------------------------------                       
parsing ./friendlywrt22/parameter.txt:                                                 
create new GPT 9:                                                                      
----------------------------------------------------------------                       
copy from: ./friendlywrt22 to out/friendlywrt_22.03_20220925_rk3568_arm64_sd.img       
 [RAW. 0]:      284 KB | ./friendlywrt22/idbloader.img  > 100% : done.                 
 [RAW. 1]:     4096 KB | ./friendlywrt22/uboot.img      > 100% : done.                 
 [RAW. 2]:       48 KB | ./friendlywrt22/misc.img       > 100% : done.                 
 [RAW. 3]:        1 KB | ./friendlywrt22/dtbo.img       > 100% : done.                 
 [RAW. 4]:     3387 KB | ./friendlywrt22/resource.img   > 100% : done.                 
 [RAW. 5]:    37832 KB | ./friendlywrt22/kernel.img     > 100% : done.                 
 [RAW. 6]:     7308 KB | ./friendlywrt22/boot.img       > 100% : done.                 
 [RAW. 8]:   375850 KB | ./friendlywrt22/rootfs.img     > 100% : done.                 
 [RAW. 9]:     5752 KB | ./friendlywrt22/userdata.img   > 100% : done.                 
----------------------------------------------------------------                       
---------------------------------                                                      
RAW image successfully created (15:19:08).                                             
-rw-rw-r-- 1 build build 999999488 Sep 25 15:19 out/friendlywrt_22.03_20220925_rk3568_arm64_sd.img                                                                            
Tip: You can compress it to save disk space.                                           
-----------------------------------------                                              
Run the following command for sdcard install:                                          
        sudo dd if=out/friendlywrt_22.03_20220925_rk3568_arm64_sd.img bs=1M of=/dev/sdX                                                                                       
-----------------------------------------
Raw
rk3568.md

README

Boot logs from default FriendlyWRT 21.02

[    1.994124] Linux version 5.10.66 (ubuntu@4cca3b9617ec) (aarch64-linux-gnu-gcc (ctng-1.23.0-150g-FA) 6.4.0, GNU ld (ctng-1.23.0-150g-FA) 2.28) #1 SMP Mon Jun 13 17:24:31 CST 2022
[    1.999626] Machine model: FriendlyElec NanoPi R5S                                                                                                                         
...
[   12.584026] r8125: loading out-of-tree module taints kernel.
[   12.586112] r8125 2.5Gigabit Ethernet driver 9.009.00-NAPI loaded
[   12.586229] r8125 0000:01:00.0: enabling device (0000 -> 0003)
[   12.604586] r8125: This product is covered by one or more of the following patents: US6,570,884, US6,115,776, and US6,327,625.
[   12.606651] r8125  Copyright (C) 2022 Realtek NIC software team <[email protected]> 
[   12.606651]  This program comes with ABSOLUTELY NO WARRANTY; for details, please see <http://www.gnu.org/licenses/>. 
[   12.606651]  This is free software, and you are welcome to redistribute it under certain conditions; see <http://www.gnu.org/licenses/>. 
[   12.606932] r8125 2.5Gigabit Ethernet driver 9.009.00-NAPI loaded
[   12.607024] r8125 0001:11:00.0: enabling device (0000 -> 0003)
[   12.624794] r8125 0001:11:00.0 (unnamed net_device) (uninitialized): Invalid ether addr 00:00:00:00:00:00
[   12.624831] r8125 0001:11:00.0 (unnamed net_device) (uninitialized): Random ether addr 2a:dd:27:05:d1:69
[   12.625441] r8125: This product is covered by one or more of the following patents: US6,570,884, US6,115,776, and US6,327,625.
[   12.627485] r8125  Copyright (C) 2022 Realtek NIC software team <[email protected]> 
[   12.627485]  This program comes with ABSOLUTELY NO WARRANTY; for details, please see <http://www.gnu.org/licenses/>. 
[   12.627485]  This is free software, and you are welcome to redistribute it under certain conditions; see <http://www.gnu.org/licenses/>. 

...
[   16.630001] rk_gmac-dwmac fe2a0000.ethernet eth0: PHY [stmmac-0:01] driver [RTL8211F Gigabit Ethernet] (irq=82)
[   16.632696] rk_gmac-dwmac fe2a0000.ethernet eth0: No Safety Features support found
[   16.632722] rk_gmac-dwmac fe2a0000.ethernet eth0: IEEE 1588-2008 Advanced Timestamp supported
[   16.632994] rk_gmac-dwmac fe2a0000.ethernet eth0: registered PTP clock
[   16.633857] rk_gmac-dwmac fe2a0000.ethernet eth0: configuring for phy/rgmii link mode
[   20.152148] rk_gmac-dwmac fe2a0000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx

Sysfs PTP contents

root@FriendlyWrt:~# ls -lR /sys/class/ptp/ptp0/
/sys/class/ptp/ptp0/:
total 0
-r--r--r-- 1 root root 4096 Aug  4 17:07 clock_name
-r--r--r-- 1 root root 4096 Aug  4 17:07 dev
lrwxrwxrwx 1 root root    0 Aug  4 17:07 device -> ../../../fe2a0000.ethernet
-r--r--r-- 1 root root 4096 Aug  4 17:07 max_adjustment
-r--r--r-- 1 root root 4096 Aug  4 17:07 n_alarms
-r--r--r-- 1 root root 4096 Aug  4 17:07 n_external_timestamps
-r--r--r-- 1 root root 4096 Aug  4 17:07 n_periodic_outputs
-r--r--r-- 1 root root 4096 Aug  4 17:07 n_programmable_pins
drwxr-xr-x 2 root root    0 Aug  4 17:07 power
-r--r--r-- 1 root root 4096 Aug  4 17:07 pps_available
lrwxrwxrwx 1 root root    0 Aug  4 17:07 subsystem -> ../../../../../class/ptp
-rw-r--r-- 1 root root 4096 Aug  4 17:07 uevent

/sys/class/ptp/ptp0/power:
total 0
-rw-r--r-- 1 root root 4096 Aug  4 17:09 async
-rw-r--r-- 1 root root 4096 Aug  4 17:09 autosuspend_delay_ms
-rw-r--r-- 1 root root 4096 Aug  4 17:09 control
-r--r--r-- 1 root root 4096 Aug  4 17:09 runtime_active_kids
-r--r--r-- 1 root root 4096 Aug  4 17:09 runtime_active_time
-r--r--r-- 1 root root 4096 Aug  4 17:09 runtime_enabled
-r--r--r-- 1 root root 4096 Aug  4 17:09 runtime_status
-r--r--r-- 1 root root 4096 Aug  4 17:09 runtime_suspended_time
-r--r--r-- 1 root root 4096 Aug  4 17:09 runtime_usage

phc_ctl output for eth0

root@FriendlyWrt:~# phc_ctl -q  eth0
phc_ctl[507.439]: 
capabilities:
  62500000 maximum frequency adjustment (ppb)
  0 programable alarms
  0 external time stamp channels
  0 programmable periodic signals
  0 configurable input/output pins
  doesn't have pulse per second support
  doesn't have cross timestamping support

PCI output from lspci

root@FriendlyWrt:/sys/class/net/eth1# lspci -nnk
0000:00:00.0 PCI bridge [0604]: Rockchip Electronics Co., Ltd RK3568 Remote Signal Processor [1d87:3566] (rev 01)
        Kernel driver in use: pcieport
lspci: Unable to load libkmod resources: error -12
0000:01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller [10ec:8125] (rev 05)
        Subsystem: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller [10ec:8125]
        Kernel driver in use: r8125
0001:10:00.0 PCI bridge [0604]: Rockchip Electronics Co., Ltd RK3568 Remote Signal Processor [1d87:3566] (rev 01)
        Kernel driver in use: pcieport
0001:11:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller [10ec:8125] (rev 05)
        Subsystem: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller [10ec:8125]
        Kernel driver in use: r8125

Conclusion:

  • The RK3568 integrated MAC with in-tree driver rk_gmac-dwmac does support advanced PTP timestampping.
  • The out-of-tree r8125 v9.0.0 doesn't seem to fully enable PTP support present in the driver.
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