From 9b3fc21837dc32eda9656f264f74719ea77311a2 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Tue, 30 Jan 2018 16:01:34 +0100 Subject: [PATCH] mmc: omap_hsmmc: Enable DDR mode support In order to enable DDR mode, Dual Data Rate mode bit has to be set in MMCHS_CON register. Set it here. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Jean-Jacques Hiblot --- arch/arm/include/asm/omap_mmc.h | 1 + drivers/mmc/omap_hsmmc.c | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/arch/arm/include/asm/omap_mmc.h b/arch/arm/include/asm/omap_mmc.h index 507435a..6aca9e9 100644 --- a/arch/arm/include/asm/omap_mmc.h +++ b/arch/arm/include/asm/omap_mmc.h @@ -89,6 +89,7 @@ struct omap_hsmmc_plat { #define WPP_ACTIVEHIGH (0x0 << 8) #define RESERVED_MASK (0x3 << 9) #define CTPL_MMC_SD (0x0 << 11) +#define DDR (0x1 << 19) #define DMA_MASTER (0x1 << 20) #define BLEN_512BYTESLEN (0x200 << 0) #define NBLK_STPCNT (0x0 << 16) diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c index c6b74a1..2f4909e 100644 --- a/drivers/mmc/omap_hsmmc.c +++ b/drivers/mmc/omap_hsmmc.c @@ -271,6 +271,11 @@ static void omap_hsmmc_set_timing(struct mmc *mmc) val &= ~AC12_UHSMC_MASK; priv->mode = mmc->selected_mode; + if (mmc_is_mode_ddr(priv->mode)) + writel(readl(&mmc_base->con) | DDR, &mmc_base->con); + else + writel(readl(&mmc_base->con) & ~DDR, &mmc_base->con); + switch (priv->mode) { case MMC_HS_200: case UHS_SDR104: