We want to port the SDIO wifi driver on AM335x platform with WINCE7.0. But we met SDIO host controller issue.
RAK client driver will random fail to pull message from our target mail box
This will not happen 100% Sometimes it can work with out any problem for nornal ethernet package length 0 ~ 1536
But sometime it will fail for both small package and large package
I try to check the align of each package and manualy align it to 8 16, and fail will still happen
After bringup all of the SDIO request were handled by CMD53. Its basic logic should be OK
Since wlan firmware could be downloadeded and scan results could be passed up.
I am suspected that the DMA of SDIO host controller has some interop. issue. Maybe TI know its limitation and we could bypass it in codes
It is better to get a TI card to double confirm if they also have stability issue
