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mmc: zynqmp: Add HS200 modes support for ZynqMP

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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>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Siva Durga Prasad Paladugu 2018-05-29 20:03:11 +05:30 committed by Michal Simek
parent 434f9d454e
commit 843337089e
2 changed files with 18 additions and 8 deletions
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1
configs/xilinx_zynqmp_zc1751_xm015_dc1_defconfig
View File

@ -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

25
drivers/mmc/zynq_sdhci.c
View File

@ -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;