On 05/25/2017 01:14 AM, Masahiro Yamada wrote: > 2017-05-19 21:24 GMT+09:00 Masahiro Yamada <[email protected]>: >> The MMC framework in U-Boot does not support a systematic API for >> timing switch like mmc_set_timing() in Linux. >> >> U-Boot just provides a hook to change the clock frequency via >> mmc_set_clock(). It is up to drivers if additional register >> settings are needed. >> >> This driver needs to set a correct timing mode into a register when >> it migrates to a different speed mode. Only increasing clock frequency >> could result in setup/hold timing violation. >> >> The timing mode should be decided by checking MMC_TIMING_* like >> drivers/mmc/host/sdhci-cadence.c in Linux, but "timing" is not >> supported by U-Boot for now. Just use mmc->clock to decide the >> timing mode. >> >> Signed-off-by: Masahiro Yamada <[email protected]> > > I see lots of improvements for MMC core. > > Looks like it is better to rebase my work > after they are merged. > > > I marked this patch Superseded.
Oh..thanks for marking..Sorry for late. Best Regards, Jaehoon Chung > > > > _______________________________________________ U-Boot mailing list [email protected] https://lists.denx.de/listinfo/u-boot
