[PATCH] Revert "mmc: rockchip_sdhci: Limit number of blocks read in a single command"

Simon Glass sjg at chromium.org
Wed May 3 16:22:10 CEST 2023

Hi Jonas,

On Wed, 3 May 2023 at 08:17, Jonas Karlman <jonas at kwiboo.se> wrote:
> Hi Simon,
> On 2023-05-03 14:41, Simon Glass wrote:
> > This makes MMC extremely slow on bob. Even reading the environment takes
> > ages.
> >
> > If there is a bug on a particular controller, it should be worked around
> > using the compatible string, e.g. with ->flags in struct sdhci_data -
> > althought I don't see any docs for the flags.
> This revert will break booting from emmc on rock5b-rk3588.
> An alternative to this revert could be to enable CONFIG_MMC_SDHCI_SDMA
> for more rk3399 defconfigs. Using DMA should improve/restore performance.
> I have a followup patch in the works that changes this slightly, can
> include a change to only apply this workaround for rk35xx.

OK, but please use the compatible string for any workarounds.


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