Part Number: AM4378
On custom board, some boards keep output auto_tuning after serval hours:
[13406.489244] [auto]cmd53 write error=-84, tx_count=6, last_sdio_action=2->0
[13413.611210] woal_sdio_auto_tuning: send mmc tuning
[13413.611246] woal_sdio_auto_tuning: send mmc tuning,ret = 0
[13414.255287] woal_sdio_auto_tuning: send mmc tuning
[13414.255324] woal_sdio_auto_tuning: send mmc tuning,ret = 0
[13414.897721] woal_sdio_auto_tuning: send mmc tuning
[13414.897758] woal_sdio_auto_tuning: send mmc tuning,ret = 0
[13415.548100] woal_sdio_auto_tuning: send mmc tuning
[13415.548135] woal_sdio_auto_tuning: send mmc tuning,ret = 0
[13416.196006] woal_sdio_auto_tuning: send mmc tuning
[13416.196042] woal_sdio_auto_tuning: send mmc tuning,ret = 0
[13416.843249] woal_sdio_auto_tuning: send mmc tuning
[13416.843283] woal_sdio_auto_tuning: send mmc tuning,ret = 0
[13417.496622] woal_sdio_auto_tuning: send mmc tuning
[13417.496659] woal_sdio_auto_tuning: send mmc tuning,ret = 0
[13418.141898] woal_sdio_auto_tuning: send mmc tuning
[13418.141936] woal_sdio_auto_tuning: send mmc tuning,ret = 0
[13418.786728] woal_sdio_auto_tuning: send mmc tuning
[13418.786764] woal_sdio_auto_tuning: send mmc tuning,ret = 0
[13419.432708] woal_sdio_auto_tuning: send mmc tuning
[13419.432748] woal_sdio_auto_tuning: send mmc tuning,ret = 0Full log as below
The hardware connection is below, there is 33ohm serial resistor on each signal which is not drawed in the block diagram.
( The previous version hardware use a level shifter between wifi moduel and AM4378, VDDSHV9 and VDDSHV11 powered with 3.3V. which works fine, dif not report such issue.)
The problem is once it reported, it keeps on, can't recover. need suggestions.
