Hi,
we planned to submit our custom i.MX6ULL board [1] to mainline after
release of Linux 6.3-rc1, but the recent enet refclock changes breaks
our Ethernet phy:
[ 0.000000] imx:clk-gpr-mux: failed to get parent (-EINVAL)
...
[ 18.574595] SMSC LAN8710/LAN8720 2188000.ethernet-1:00:
phy_poll_reset failed: -110
[ 18.581064] fec 2188000.ethernet eth0: Unable to connect to phy
I narrow down the PHY issue to this first bad commit:
5f82bfced611 ("clk: imx6ul: fix enet1 gate configuration")
The clock issues seems to be cause by the following commit. If i revert
5f82bfced611 and 4e197ee880c24 or use Linux 6.2 everything is fine.
Maybe this helps for further analyse:
--- clk_summary.good 2023-03-05 22:41:52.607392458 +0100
+++ clk_summary.bad 2023-03-05 22:41:52.587391697 +0100
@@ -46,12 +46,13 @@
usbphy2 0 0 0
480000000 0 0 50000 N
pll6 1 1 0
500000000 0 0 50000 Y
pll6_bypass 1 1 0
500000000 0 0 50000 Y
- pll6_enet 2 2 0
500000000 0 0 50000 Y
- enet_ptp_ref 1 1 0
25000000 0 0 50000 Y
- enet_ptp 1 1 0
25000000 0 0 50000 Y
+ pll6_enet 1 1 0
500000000 0 0 50000 Y
+ enet_ptp_ref 0 0 0
25000000 0 0 50000 Y
+ enet_ptp 0 0 0
25000000 0 0 50000 N
enet2_ref 0 0 0
50000000 0 0 50000 Y
- enet_ref_125m 0 0 0
50000000 0 0 50000 N
- enet_ref 3 3 0
50000000 0 0 50000 Y
+ enet2_ref_125m 0 0 0
50000000 0 0 50000 N
+ enet1_ref 1 1 0
50000000 0 0 50000 Y
+ enet1_ref_125m 0 0 0
50000000 0 0 50000 N
pll5 0 0 0
296600000 0 0 50000 Y
pll5_bypass 0 0 0
296600000 0 0 50000 Y
pll5_video 0 0 0
296600000 0 0 50000 N
@@ -137,19 +138,19 @@
step 0 0 0
528000000 0 0 50000 Y
periph_pre 1 1 0
528000000 0 0 50000 Y
periph 3 3 0
528000000 0 0 50000 Y
- ahb 9 9 0
132000000 0 0 50000 Y
+ ahb 8 8 0
132000000 0 0 50000 Y
sdma 4 1 0
132000000 0 0 50000 Y
rom 1 1 0
132000000 0 0 50000 Y
esai_mem 0 0 0
132000000 0 0 50000 N
esai_ipg 0 0 0
132000000 0 0 50000 N
aips_tz3 1 1 0
132000000 0 0 50000 Y
- enet_ahb 1 1 0
132000000 0 0 50000 Y
+ enet_ahb 0 0 0
132000000 0 0 50000 N
dcp 1 1 0
132000000 0 0 50000 Y
asrc_mem 0 0 0
132000000 0 0 50000 N
asrc_ipg 0 0 0
132000000 0 0 50000 N
aips_tz2 1 1 0
132000000 0 0 50000 Y
aips_tz1 1 1 0
132000000 0 0 50000 Y
- ipg 15 13 0
66000000 0 0 50000 Y
+ ipg 14 12 0
66000000 0 0 50000 Y
wdog3 0 0 0
66000000 0 0 50000 N
uart8_ipg 0 0 0
66000000 0 0 50000 N
usboh3 0 0 0
66000000 0 0 50000 N
@@ -180,7 +181,7 @@
uart2_ipg 0 0 0
66000000 0 0 50000 N
can2_ipg 0 0 0
66000000 0 0 50000 N
can1_ipg 0 0 0
66000000 0 0 50000 N
- enet 1 1 0
66000000 0 0 50000 Y
+ enet 0 0 0
66000000 0 0 50000 N
axi_sel 1 1 0
528000000 0 0 50000 Y
axi_podf 2 2 0
264000000 0 0 50000 Y
axi 1 1 0
264000000 0 0 50000 Y
[1] -
https://github.com/chargebyte/linux/commit/5f47f1b029d34391a4b24d4a30105f517126363e#diff-a3def31334aa0f3b641ed5b21a60b462a9cbdda064e7276770be22d9860f2ae7R137