On Mon, 11 Jan 2021 at 09:22, Renius Chen <reniuschengl@xxxxxxxxx> wrote: > > To improve the compatibility of GL9763E with HS400 eMMC cards, > finetune the RX delay of HS400 mode. > > Signed-off-by: Renius Chen <reniuschengl@xxxxxxxxx> Applied for next, thanks! Kind regards Uffe > --- > drivers/mmc/host/sdhci-pci-gli.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c > index 2d13bfcbcacf..14d9154f3af1 100644 > --- a/drivers/mmc/host/sdhci-pci-gli.c > +++ b/drivers/mmc/host/sdhci-pci-gli.c > @@ -95,6 +95,10 @@ > #define PCIE_GLI_9763E_MMC_CTRL 0x960 > #define GLI_9763E_HS400_SLOW BIT(3) > > +#define PCIE_GLI_9763E_CLKRXDLY 0x934 > +#define GLI_9763E_HS400_RXDLY GENMASK(31, 28) > +#define GLI_9763E_HS400_RXDLY_5 0x5 > + > #define SDHCI_GLI_9763E_CQE_BASE_ADDR 0x200 > #define GLI_9763E_CQE_TRNS_MODE (SDHCI_TRNS_MULTI | \ > SDHCI_TRNS_BLK_CNT_EN | \ > @@ -801,6 +805,11 @@ static void gli_set_gl9763e(struct sdhci_pci_slot *slot) > value |= FIELD_PREP(GLI_9763E_CFG2_L1DLY, GLI_9763E_CFG2_L1DLY_MAX); > pci_write_config_dword(pdev, PCIE_GLI_9763E_CFG2, value); > > + pci_read_config_dword(pdev, PCIE_GLI_9763E_CLKRXDLY, &value); > + value &= ~GLI_9763E_HS400_RXDLY; > + value |= FIELD_PREP(GLI_9763E_HS400_RXDLY, GLI_9763E_HS400_RXDLY_5); > + pci_write_config_dword(pdev, PCIE_GLI_9763E_CLKRXDLY, value); > + > pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value); > value &= ~GLI_9763E_VHS_REV; > value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_R); > -- > 2.27.0 >
