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| author | Volodymyr Riazantsev <volodymyr.riazantsev@globallogic.com> | 2015-01-20 10:16:44 -0500 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2015-02-24 13:11:10 -0800 |
| commit | 0e1bf614d5045b060db8e1bf9e7f69afdf1c592f (patch) | |
| tree | 159ede2b603a11e20cfd667f9712137839a6bb7a | |
| parent | 8133574ea4769806145a8fd49fc0567db86583a8 (diff) | |
| download | talos-obmc-uboot-0e1bf614d5045b060db8e1bf9e7f69afdf1c592f.tar.gz talos-obmc-uboot-0e1bf614d5045b060db8e1bf9e7f69afdf1c592f.zip | |
mmc: fsl_esdhc: Add support for DDR mode
Add support of the DDR mode for eSDHC driver.
Enable it for i.MX6 SoC family only.
Signed-off-by: Volodymyr Riazantsev <volodymyr.riazantsev@globallogic.com>
Reviewed-by: York Sun <yorksun@freescale.com>
| -rw-r--r-- | drivers/mmc/fsl_esdhc.c | 8 | ||||
| -rw-r--r-- | include/configs/mx6_common.h | 2 | ||||
| -rw-r--r-- | include/fsl_esdhc.h | 1 |
3 files changed, 9 insertions, 2 deletions
diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c index c55eb28217..f5d2ccba15 100644 --- a/drivers/mmc/fsl_esdhc.c +++ b/drivers/mmc/fsl_esdhc.c @@ -319,7 +319,8 @@ esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) esdhc_write32(®s->cmdarg, cmd->cmdarg); #if defined(CONFIG_FSL_USDHC) esdhc_write32(®s->mixctrl, - (esdhc_read32(®s->mixctrl) & 0xFFFFFF80) | (xfertyp & 0x7F)); + (esdhc_read32(®s->mixctrl) & 0xFFFFFF80) | (xfertyp & 0x7F) + | (mmc->ddr_mode ? XFERTYP_DDREN : 0)); esdhc_write32(®s->xfertyp, xfertyp & 0xFFFF0000); #else esdhc_write32(®s->xfertyp, xfertyp); @@ -442,7 +443,7 @@ static void set_sysctl(struct mmc *mmc, uint clock) if ((sdhc_clk / (div * pre_div)) <= clock) break; - pre_div >>= 1; + pre_div >>= mmc->ddr_mode ? 2 : 1; div -= 1; clk = (pre_div << 8) | (div << 4); @@ -601,6 +602,9 @@ int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg) } cfg->cfg.host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT | MMC_MODE_HC; +#ifdef CONFIG_SYS_FSL_ESDHC_HAS_DDR_MODE + cfg->cfg.host_caps |= MMC_MODE_DDR_52MHz; +#endif if (cfg->max_bus_width > 0) { if (cfg->max_bus_width < 8) diff --git a/include/configs/mx6_common.h b/include/configs/mx6_common.h index e0528ce4b9..29b72b2e9d 100644 --- a/include/configs/mx6_common.h +++ b/include/configs/mx6_common.h @@ -28,6 +28,8 @@ #define CONFIG_SYS_PL310_BASE L2_PL310_BASE #endif +#define CONFIG_SYS_FSL_ESDHC_HAS_DDR_MODE + #define CONFIG_MP #define CONFIG_MXC_GPT_HCLK diff --git a/include/fsl_esdhc.h b/include/fsl_esdhc.h index c1b6648591..313fa1e312 100644 --- a/include/fsl_esdhc.h +++ b/include/fsl_esdhc.h @@ -108,6 +108,7 @@ #define XFERTYP_RSPTYP_48_BUSY 0x00030000 #define XFERTYP_MSBSEL 0x00000020 #define XFERTYP_DTDSEL 0x00000010 +#define XFERTYP_DDREN 0x00000008 #define XFERTYP_AC12EN 0x00000004 #define XFERTYP_BCEN 0x00000002 #define XFERTYP_DMAEN 0x00000001 |
