On 27 August 2018 at 18:07, Ulf Hansson <[email protected]> wrote: > On 23 August 2018 at 14:50, Adrian Hunter <[email protected]> wrote: >> On 16/08/18 10:54, Chunyan Zhang wrote: >>> For version 4.10 and aboves, SDHCI_ARGUMENT2 is also uses to indicate >>> 32-bit number of blocks, it doesn't support stuff bits in argument of >>> CMD23, but only block count for the following command (CMD18/25). >>> >>> Signed-off-by: Chunyan Zhang <[email protected]> >>> --- >>> drivers/mmc/host/sdhci.c | 9 +++++++++ >>> drivers/mmc/host/sdhci.h | 1 + >>> 2 files changed, 10 insertions(+) >>> >>> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c >>> index b3328ee..a72ad0d 100644 >>> --- a/drivers/mmc/host/sdhci.c >>> +++ b/drivers/mmc/host/sdhci.c >>> @@ -1729,6 +1729,15 @@ static void sdhci_request(struct mmc_host *mmc, >>> struct mmc_request *mrq) >>> } >>> } >>> >>> + /* >>> + * For version 4.10 and above, ARGUMENT2 register is also used as >>> 32-bit >>> + * block count register which don't support stuff bits of CMD23 >>> argument >>> + */ >>> + if (host->version >= SDHCI_SPEC_410 && >>> + mrq->sbc && (mrq->sbc->arg & SDHCI_ARG2_STUFF) && >>> + (host->flags & SDHCI_AUTO_CMD23)) >>> + host->flags &= ~SDHCI_AUTO_CMD23; >> >> I would prefer this be done in sdhci-sprd.c by hooking ->request(). Someone >> sent a patch recently to export sdhci_request(). > > Right. So I have picked up the patch you were referring to. > https://lkml.org/lkml/2018/8/20/140 > > Chunyan, you may now preferably base your next version on top of my > mmc tree's next branch.
Ok, will do. Thanks, Chunyan > > [...] > > Kind regards > Uffe
