diff mbox series

[PATCHv3,7/7] mmc: dw_mmc-exynos: Add tuning for sdr and ddr timing for USH-I mode

Message ID 20180920175826.1284-8-linux.amoon@gmail.com (mailing list archive)
State New, archived
Headers show
Series Add support for UHS-I on Exynos5422 odroid boards | expand

Commit Message

Anand Moon Sept. 20, 2018, 5:58 p.m. UTC 
Add tuning for sdr and ddr timing for USH-I mode sdr104/sdr50/ddr50
for host controller.

CC: Jaehoon Chung <jh80.chung@samsung.com>
CC: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
---
This patch is new to this series
---
 drivers/mmc/host/dw_mmc-exynos.c | 11 +++++++++++
 1 file changed, 11 insertions(+)
diff mbox series

Patch

diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c
index ab47b018716a..d46c3439b508 100644
--- a/drivers/mmc/host/dw_mmc-exynos.c
+++ b/drivers/mmc/host/dw_mmc-exynos.c
@@ -253,6 +253,8 @@  static void dw_mci_exynos_config_hs400(struct dw_mci *host, u32 timing)
 	if (timing == MMC_TIMING_MMC_HS400) {
 		dqs |= DATA_STROBE_EN;
 		strobe = DQS_CTRL_RD_DELAY(strobe, priv->dqs_delay);
+	} else if (timing == MMC_TIMING_UHS_SDR104) {
+		dqs &= 0xffffff00;
 	} else {
 		dqs &= ~DATA_STROBE_EN;
 	}
@@ -312,6 +314,15 @@  static void dw_mci_exynos_set_ios(struct dw_mci *host, struct mmc_ios *ios)
 		if (ios->bus_width == MMC_BUS_WIDTH_8)
 			wanted <<= 1;
 		break;
+	case MMC_TIMING_UHS_SDR104:
+	case MMC_TIMING_UHS_SDR50:
+		clksel = (priv->sdr_timing & 0xfff8ffff) |
+			(priv->ciu_div << 16);
+		break;
+	case MMC_TIMING_UHS_DDR50:
+		clksel = (priv->ddr_timing & 0xfff8ffff) |
+			(priv->ciu_div << 16);
+		break;
 	default:
 		clksel = priv->sdr_timing;
 	}