From: Faiz Abbas faiz4000@gmail.com
The HOST_CONTROL2 register is a part of SDHC v3.00 and not just specific to arasan/zynq controllers. Add the same to sdhci.h.
Also create a common API to set UHS timings in HOST_CONTROL2.
Signed-off-by: Faiz Abbas faiz4000@gmail.com Reviewed-by: Tom Rini trini@konsulko.com --- drivers/mmc/sdhci.c | 28 ++++++++++++++++++++++++++++ drivers/mmc/zynq_sdhci.c | 31 ++----------------------------- include/sdhci.h | 19 ++++++++++++++++++- 3 files changed, 48 insertions(+), 30 deletions(-)
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 44c6fc5f45..a4dbfaf449 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -451,6 +451,34 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power) sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); }
+void sdhci_set_uhs_timing(struct sdhci_host *host) +{ + struct mmc *mmc = (struct mmc *)host->mmc; + u32 reg; + + reg = sdhci_readw(host, SDHCI_HOST_CONTROL2); + reg &= ~SDHCI_CTRL_UHS_MASK; + + switch (mmc->selected_mode) { + case UHS_SDR50: + case MMC_HS_52: + reg |= SDHCI_CTRL_UHS_SDR50; + break; + case UHS_DDR50: + case MMC_DDR_52: + reg |= SDHCI_CTRL_UHS_DDR50; + break; + case UHS_SDR104: + case MMC_HS_200: + reg |= SDHCI_CTRL_UHS_SDR104; + break; + default: + reg |= SDHCI_CTRL_UHS_SDR12; + } + + sdhci_writew(host, reg, SDHCI_HOST_CONTROL2); +} + #ifdef CONFIG_DM_MMC static int sdhci_set_ios(struct udevice *dev) { diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c index b05334dfc8..662b001a29 100644 --- a/drivers/mmc/zynq_sdhci.c +++ b/drivers/mmc/zynq_sdhci.c @@ -49,11 +49,6 @@ static const u8 mode2timing[] = { [MMC_HS_200] = MMC_HS200_BUS_SPEED, };
-#define SDHCI_HOST_CTRL2 0x3E -#define SDHCI_CTRL2_MODE_MASK 0x7 -#define SDHCI_18V_SIGNAL 0x8 -#define SDHCI_CTRL_EXEC_TUNING 0x0040 -#define SDHCI_CTRL_TUNED_CLK 0x80 #define SDHCI_TUNING_LOOP_COUNT 40
static void arasan_zynqmp_dll_reset(struct sdhci_host *host, u8 deviceid) @@ -191,30 +186,8 @@ static void arasan_sdhci_set_control_reg(struct sdhci_host *host) }
if (mmc->selected_mode > SD_HS && - mmc->selected_mode <= UHS_DDR50) { - reg = sdhci_readw(host, SDHCI_HOST_CTRL2); - reg &= ~SDHCI_CTRL2_MODE_MASK; - switch (mmc->selected_mode) { - case UHS_SDR12: - reg |= UHS_SDR12_BUS_SPEED; - break; - case UHS_SDR25: - reg |= UHS_SDR25_BUS_SPEED; - break; - case UHS_SDR50: - reg |= UHS_SDR50_BUS_SPEED; - break; - case UHS_SDR104: - reg |= UHS_SDR104_BUS_SPEED; - break; - case UHS_DDR50: - reg |= UHS_DDR50_BUS_SPEED; - break; - default: - break; - } - sdhci_writew(host, reg, SDHCI_HOST_CTRL2); - } + mmc->selected_mode <= UHS_DDR50) + sdhci_set_uhs_timing(host); } #endif
diff --git a/include/sdhci.h b/include/sdhci.h index 725520b0b4..88e2dd7294 100644 --- a/include/sdhci.h +++ b/include/sdhci.h @@ -144,7 +144,23 @@
#define SDHCI_ACMD12_ERR 0x3C
-/* 3E-3F reserved */ +#define SDHCI_HOST_CONTROL2 0x3E +#define SDHCI_CTRL_UHS_MASK 0x0007 +#define SDHCI_CTRL_UHS_SDR12 0x0000 +#define SDHCI_CTRL_UHS_SDR25 0x0001 +#define SDHCI_CTRL_UHS_SDR50 0x0002 +#define SDHCI_CTRL_UHS_SDR104 0x0003 +#define SDHCI_CTRL_UHS_DDR50 0x0004 +#define SDHCI_CTRL_HS400 0x0005 /* Non-standard */ +#define SDHCI_CTRL_VDD_180 0x0008 +#define SDHCI_CTRL_DRV_TYPE_MASK 0x0030 +#define SDHCI_CTRL_DRV_TYPE_B 0x0000 +#define SDHCI_CTRL_DRV_TYPE_A 0x0010 +#define SDHCI_CTRL_DRV_TYPE_C 0x0020 +#define SDHCI_CTRL_DRV_TYPE_D 0x0030 +#define SDHCI_CTRL_EXEC_TUNING 0x0040 +#define SDHCI_CTRL_TUNED_CLK 0x0080 +#define SDHCI_CTRL_PRESET_VAL_ENABLE 0x8000
#define SDHCI_CAPABILITIES 0x40 #define SDHCI_TIMEOUT_CLK_MASK 0x0000003F @@ -423,6 +439,7 @@ int sdhci_bind(struct udevice *dev, struct mmc *mmc, struct mmc_config *cfg); int add_sdhci(struct sdhci_host *host, u32 f_max, u32 f_min); #endif /* !CONFIG_BLK */
+void sdhci_set_uhs_timing(struct sdhci_host *host); #ifdef CONFIG_DM_MMC /* Export the operations to drivers */ int sdhci_probe(struct udevice *dev);