On Friday 29 April 2022 13:50:31 Sinan Akman wrote: > > Hi Pali > > On 2022-04-29 1:35 p.m., Pali Rohár wrote: > > Hello! > > > > U-Boot prints error "fsl_esdhc: Internal clock never stabilised." on > > P2020 everytime when trying to access SD card. It happens with every > > tested SD card. Note that both read and write operation with SD card is > > working fine, U-Boot just prints that noisy error. > > > > For example: > > > > SD boot... > > No max bus width provided. Assume 8-bit supported. > > Second program loader running in sram... > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > > > Or: > > > > => mmc info > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > fsl_esdhc: Internal clock never stabilised. > > Device: FSL_SDHC > > Manufacturer ID: 3 > > OEM: 5344 > > Name: SA16G > > Bus Speed: 50000000 > > Mode: SD High Speed (50MHz) > > Rd Block Len: 512 > > SD version 3.0 > > High Capacity: Yes > > Capacity: 14.8 GiB > > Bus Width: 1-bit > > Erase Group Size: 512 Bytes > > > > I tried to bisect this error and I figured out that U-Boot prints this > > error since beginning when this error message was added into fsl_esdhc > > driver. > > > > Do you have any idea what is wrong? And how to fix it? > > AFAIR this is related to the issue that some of the the register > fields did not exist in p2020 and the patch was added for T series. > Please take a look at the reference manuals and verify that the > register that the code checks did not exist in P2020. In this case > I believe you can simple exclude this check with #ifdef P2020 or > something to this effect. > > Thanks > Sinan Akman
Thank you very much! I will send a patch shortly.