[PATCH 4/4] mmc: mmci: add hs200 support for stm32 sdmmc

Marek Vasut marex at denx.de
Thu Dec 16 01:14:45 PST 2021


On 12/15/21 15:17, Yann Gautier wrote:
> Use feedback clock for HS200 mode, as for SDR104.
> The HS200 mode can be enabled through DT by using mmc-hs200-1_8v.
> It is possible to use it on STM32MP13, but not STM32MP15 platforms.

HS200 is possible even on the MP15, it just doesn't yield any 
(performance) benefits due to the slower bus clock (125 MHz or so?), so 
it isn't worth enabling it on MP15. It is nice to see MP13 can do better.



More information about the linux-arm-kernel mailing list