[...] > > > Btw, I saw that imx7d-sdb.dts (and probably other i.MX 7 boards too) > > > use three different settings for usdhc pinctrl: 0x59, 0x5a and 0x5b > > > (for default, 100MHz and 200MHz respectively). One would expect that > > > higher frequency use higher driver strength (and this is the case for > > > i.MX 6). > > > But with this new/corrected pad values this means we use x4, x2 and > > > x6 for default, 100MHz and 200MHz respectively. This hardly seems right..? > > > Probably needs fixing too? > > > > > > > Yes, that's true. > > Especially 100Mhz setting should be updated. > > > > Haibo, > > Can you please help double check if X2 for 50Mhz and X4 for 100Mhz can > > work stably on MX7D SDB? > > If yes, we'd like to update the pad setting according to new RM version. > > > > X2 for high speed and x4 for ddr50/ddr52 can work stable on MX7D SDB. > I think all the 7D related dts need to fix this. Not sure whether 7S need > this fix, > can you confirm? >
Yes, please make a patch to test board maintainer. Regards Dong Aisheng > Best Regards > Haibo Chen
