Hi Fabio, On Fri, Oct 20, 2017 at 8:40 PM, Fabio Estevam <feste...@gmail.com> wrote: > On Fri, Oct 20, 2017 at 10:40 AM, Benoît Thébaudeau <ben...@wsystem.com> > wrote: > >> With mainline U-Boot on my board, normal-speed SD cards work fine, but not HS >> ones. Both types of cards work fine at 48 MHz with my custom and older >> U-Boot. > > Ok, great! What is the version of your old U-Boot?
2012.07. I know, _very_ old. About the drive strength, the CSI pads used on my board for eSDHC2 have their drive strength set to nominal after POR, and I had to set it to high in order to make HS work, whereas the SD1 pads used on mx25pdk for eSDHC1 already have their default drive strength set to high, so setting it to max as I previously suggested should not be needed, unless the routing of the board requires it and there are also errors in Linux that are just silently recovered. >> The main difference seems to be the management of SD timeouts. I will try to >> track the differences until I find the root cause. The test results in PIO >> mode >> might also give some clues. > > Thanks for the investigation! I already have a mainline version working at HS with changes only in fsl_esdhc.c (apart from the port of my board). I still have to narrow these changes down to the issue. Is it mainline Linux that you have tested? Best regards, Benoît _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
