Oh... Sorry for missing 'v2' in title. > -----Original Message----- > From: Yangbo Lu [mailto:yangbo.lu@xxxxxxx] > Sent: Tuesday, August 15, 2017 10:17 AM > To: linux-mmc@xxxxxxxxxxxxxxx; ulf.hansson@xxxxxxxxxx; Adrian Hunter > Cc: Xiaobo Xie; Y.b. Lu > Subject: [PATCH] mmc: sdhci-of-esdhc: support ESDHC_CAPABILITIES_1 > accessing > > eSDHC is not a standard SD host controller. SDHCI_CAPABILITIES_1 register > address is 0x44 while it's 0x114 (ESDHC_CAPABILITIES_1) for eSDHC. > > Signed-off-by: Yangbo Lu <yangbo.lu@xxxxxxx> > Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx> > --- > Changes for v2: > - Removed duplicate perenthesis. > - Added "Acked-by: Adrian Hunter". > --- > drivers/mmc/host/sdhci-esdhc.h | 3 +++ > drivers/mmc/host/sdhci-of-esdhc.c | 23 +++++++++++++++++++++-- > 2 files changed, 24 insertions(+), 2 deletions(-) > > diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci- > esdhc.h index e7893f2..dfa58f8 100644 > --- a/drivers/mmc/host/sdhci-esdhc.h > +++ b/drivers/mmc/host/sdhci-esdhc.h > @@ -54,6 +54,9 @@ > #define ESDHC_CLOCK_HCKEN 0x00000002 > #define ESDHC_CLOCK_IPGEN 0x00000001 > > +/* Host Controller Capabilities Register 2 */ > +#define ESDHC_CAPABILITIES_1 0x114 > + > /* Tuning Block Control Register */ > #define ESDHC_TBCTL 0x120 > #define ESDHC_TB_EN 0x00000004 > diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci- > of-esdhc.c > index 44b016b..d96a057 100644 > --- a/drivers/mmc/host/sdhci-of-esdhc.c > +++ b/drivers/mmc/host/sdhci-of-esdhc.c > @@ -86,6 +86,17 @@ static u32 esdhc_readl_fixup(struct sdhci_host *host, > return ret; > } > > + /* > + * DTS properties of mmc host are used to enable each speed mode > + * according to soc and board capability. So clean up > + * SDR50/SDR104/DDR50 support bits here. > + */ > + if (spec_reg == SDHCI_CAPABILITIES_1) { > + ret = value & ~(SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_SDR104 | > + SDHCI_SUPPORT_DDR50); > + return ret; > + } > + > ret = value; > return ret; > } > @@ -249,7 +260,11 @@ static u32 esdhc_be_readl(struct sdhci_host *host, > int reg) > u32 ret; > u32 value; > > - value = ioread32be(host->ioaddr + reg); > + if (reg == SDHCI_CAPABILITIES_1) > + value = ioread32be(host->ioaddr + ESDHC_CAPABILITIES_1); > + else > + value = ioread32be(host->ioaddr + reg); > + > ret = esdhc_readl_fixup(host, reg, value); > > return ret; > @@ -260,7 +275,11 @@ static u32 esdhc_le_readl(struct sdhci_host *host, > int reg) > u32 ret; > u32 value; > > - value = ioread32(host->ioaddr + reg); > + if (reg == SDHCI_CAPABILITIES_1) > + value = ioread32(host->ioaddr + ESDHC_CAPABILITIES_1); > + else > + value = ioread32(host->ioaddr + reg); > + > ret = esdhc_readl_fixup(host, reg, value); > > return ret; > -- > 2.1.0.27.g96db324 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
