Rock64 4.15 GMAC RX/TX delays

gistfile1.txt

TX/RX checksums on:
38/17:	762.8	2	0.0	0	0.97
38/18:	797.5	4	0.1	5	0.75
38/19:	808.9	56	0.1	9	0.88
38/20:	800.4	1	15.4	226	0.76
38/21:	802.0	1	924.8	73	0.98
38/22:	802.5	2	924.3	81	1.07
38/23:	800.9	0	920.1	122	1.06
38/24:	808.6	0	914.1	195	0.99
38/25:	807.1	1	924.4	131	0.79
38/26:	790.4	7	926.9	104	0.69
38/27:	795.4	22	827.1	205	0.66
38/28:	670.9	53	0.1	5	0.47
38/29:					0.36
38/30:					0.28

TX/RX on:
10/24:	-	-	-	-	0.29
12/24:	-	-	-	-	0.17
15/24:	0.1	15	932.8	159	0.55
17/24:	0.1	13	922.5	77	0.47
18/24:	0.1	18	935.4	109	0.52
19/24:	0.1	13	929.2	106	0.45
20/24:	0.1	8	930.2	173	0.43
21/24:	0.1	14	929.1	137	0.34
22/24:	0.1	20	932.5	91	0.32
23/24:	0.1	13	923.2	200	0.41
24/24:	0.1	23	919.6	131	0.45
25/24:	0.1	13	923.4	115	0.38
28/24:	0.1	19	924.1	138	0.29
31/24:	0.1	13	924.0	107	0.62
34/24:	0.2	24	922.0	206	0.52
37/24:	0.1	21	919.6	137	0.41
40/24:	0.1	18	926.8	126	0.29
43/24:	0.1	13	924.1	125	0.37
46/24:	0.1	8	912.7	151	0.51
49/24:	-	-	-	-	0.40
52/24:	-	-	-	-	0.38
55/24:	-	-	-	-	0.40

TX off/RX on:
14/24:	459.4	315	928.1	50	0.33
18/24:	803.9	1	936.6	7	0.45
22/24:	809.0	0	928.4	13	0.43
26/24:	793.1	1	932.2	30	0.31
30/24:	803.4	0	926.0	79	0.30
34/24:	797.3	2	934.1	3	0.46
38/24:	805.9	0	935.9	0	0.48
42/24:	803.1	0	932.5	0	0.66
46/24:	2.6	154	931.9	2	0.88
50/24:	-	-	-	-	0.68