diff options
| author | Anand Moon <linux.amoon@gmail.com> | 2018-09-27 17:07:38 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-10-08 13:02:22 +0300 |
| commit | 32b64b0397b440877c4707f3cc3f5b4494f0be3e (patch) | |
| tree | 0be334c14ff38d17cbaaecd83719c0c2d2b0745e /drivers/mmc | |
| parent | d2681cd81b05f313bf6cda55b56c15cd46572034 (diff) | |
| download | linux-32b64b0397b440877c4707f3cc3f5b4494f0be3e.tar.xz | |
mmc: dw_mmc-exynos: Add tuning for sdr and ddr timing for USH-I mode
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>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/dw_mmc-exynos.c | 11 |
1 files changed, 11 insertions, 0 deletions
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; } |