This patch adds HS200 suuport for ZynqMP and enables the same for ZC1751 DC1 board which has eMMC on it.
Signed-off-by: Siva Durga Prasad Paladugu siva.durga.paladugu@xilinx.com --- configs/xilinx_zynqmp_zc1751_xm015_dc1_defconfig | 1 + drivers/mmc/zynq_sdhci.c | 25 ++++++++++++++++-------- 2 files changed, 18 insertions(+), 8 deletions(-)
diff --git a/configs/xilinx_zynqmp_zc1751_xm015_dc1_defconfig b/configs/xilinx_zynqmp_zc1751_xm015_dc1_defconfig index f5a3334..96abf61 100644 --- a/configs/xilinx_zynqmp_zc1751_xm015_dc1_defconfig +++ b/configs/xilinx_zynqmp_zc1751_xm015_dc1_defconfig @@ -54,6 +54,7 @@ CONFIG_DM_I2C=y CONFIG_SYS_I2C_CADENCE=y CONFIG_MISC=y CONFIG_DM_MMC=y +CONFIG_MMC_HS200_SUPPORT=y CONFIG_MMC_SDHCI=y CONFIG_MMC_SDHCI_ZYNQ=y CONFIG_SPI_FLASH=y diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c index f99731f..32c2dc6 100644 --- a/drivers/mmc/zynq_sdhci.c +++ b/drivers/mmc/zynq_sdhci.c @@ -32,12 +32,21 @@ struct arasan_sdhci_priv { };
#if defined(CONFIG_ARCH_ZYNQMP) +#define MMC_HS200_BUS_SPEED 5 + static const u8 mode2timing[] = { - [UHS_SDR12] = UHS_SDR12_BUS_SPEED, - [UHS_SDR25] = UHS_SDR25_BUS_SPEED, - [UHS_SDR50] = UHS_SDR50_BUS_SPEED, - [UHS_SDR104] = UHS_SDR104_BUS_SPEED, - [UHS_DDR50] = UHS_DDR50_BUS_SPEED, + [MMC_LEGACY] = UHS_SDR12_BUS_SPEED, + [SD_LEGACY] = UHS_SDR12_BUS_SPEED, + [MMC_HS] = HIGH_SPEED_BUS_SPEED, + [SD_HS] = HIGH_SPEED_BUS_SPEED, + [MMC_HS_52] = HIGH_SPEED_BUS_SPEED, + [MMC_DDR_52] = HIGH_SPEED_BUS_SPEED, + [UHS_SDR12] = UHS_SDR12_BUS_SPEED, + [UHS_SDR25] = UHS_SDR25_BUS_SPEED, + [UHS_SDR50] = UHS_SDR50_BUS_SPEED, + [UHS_DDR50] = UHS_DDR50_BUS_SPEED, + [UHS_SDR104] = UHS_SDR104_BUS_SPEED, + [MMC_HS_200] = MMC_HS200_BUS_SPEED, };
#define SDHCI_HOST_CTRL2 0x3E @@ -160,9 +169,6 @@ static void arasan_sdhci_set_tapdelay(struct sdhci_host *host) struct mmc *mmc = (struct mmc *)host->mmc; u8 uhsmode;
- if (!IS_SD(mmc)) - return; - uhsmode = mode2timing[mmc->selected_mode];
if (uhsmode >= UHS_SDR25_BUS_SPEED) @@ -175,6 +181,9 @@ static void arasan_sdhci_set_control_reg(struct sdhci_host *host) struct mmc *mmc = (struct mmc *)host->mmc; u32 reg;
+ if (!IS_SD(mmc)) + return; + if (mmc->signal_voltage == MMC_SIGNAL_VOLTAGE_180) { reg = sdhci_readw(host, SDHCI_HOST_CTRL2); reg |= SDHCI_18V_SIGNAL; -- 2.7.4
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