On Tue, 10 Jun 2025 at 09:25, Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> wrote: > > This host controller is possible to change incorrect tap if an SDIO > card is used because DAT1 is used for interrupt signal on SDIO standard > but the contoller doesn't take care of it. So, in the worst case, > this behavior causes a CRC error. > > To resolve the issue, add some new ops into the tmio core and > add fixed code into the renesas_sdhi driver. > > This patch set tested on RZ/G2M (r8a774a1-hihope-rzg2m-ex.dtb) with > EmbeddedArtists 1ZM module. > > Before I don't apply this patch set, the RVSCNTL value was changed > unexpectidly like below. > > [ 687.103589] renesas_sdhi_internal_dmac ee100000.mmc: renesas_sdhi_auto_correction: rvscntl = 00000701 > ... > [ 768.490979] renesas_sdhi_internal_dmac ee100000.mmc: renesas_sdhi_auto_correction: rvscntl = 00000501 > [ 768.500307] renesas_sdhi_internal_dmac ee100000.mmc: renesas_sdhi_auto_correction: rvscntl = 00000401 > [ 768.509640] renesas_sdhi_internal_dmac ee100000.mmc: renesas_sdhi_auto_correction: rvscntl = 00000501 > [ 768.518947] renesas_sdhi_internal_dmac ee100000.mmc: renesas_sdhi_auto_correction: rvscntl = 00000501 > [ 768.528217] renesas_sdhi_internal_dmac ee100000.mmc: renesas_sdhi_auto_correction: rvscntl = 00000501 > [ 768.537494] renesas_sdhi_internal_dmac ee100000.mmc: renesas_sdhi_auto_correction: rvscntl = 00000601 > > Yoshihiro Shimoda (2): > mmc: host: tmio: Add .sdio_irq() > mmc: host: renesas_sdhi: Fix incorrect auto retuning for an SDIO card > > drivers/mmc/host/renesas_sdhi.h | 1 + > drivers/mmc/host/renesas_sdhi_core.c | 48 ++++++++++++++++++++++++---- > drivers/mmc/host/tmio_mmc.h | 1 + > drivers/mmc/host/tmio_mmc_core.c | 5 ++- > 4 files changed, 47 insertions(+), 8 deletions(-) > The series applied for next, thanks! Kind regards Uffe
