[PATCH v2 3/4] mmc: exynos_dw_mmc: add support for HS400ES

[Kaustabh Chakraborty]

Add support for HS400ES. This is trivial as no new init sequence is
required in the driver, add it to the host driver capabilities, and
direct the HS400ES mode on reusing the HS400 init sequence.

Signed-off-by: Kaustabh Chakraborty <kauschluss at disroot.org>
---
 drivers/mmc/exynos_dw_mmc.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/exynos_dw_mmc.c b/drivers/mmc/exynos_dw_mmc.c
index 6558cdc803d..e0c4bbb17cc 100644
--- a/drivers/mmc/exynos_dw_mmc.c
+++ b/drivers/mmc/exynos_dw_mmc.c
@@ -185,6 +185,7 @@ static void exynos_config_hs400(struct dwmci_host *host, enum bus_mode mode)
 	strobe = priv->saved_strobe_ctrl;
 
 	switch (mode) {
+	case MMC_HS_400_ES:
 	case MMC_HS_400:
 		dqs |= DATA_STROBE_EN;
 		strobe = DQS_CTRL_RD_DELAY(strobe, priv->dqs_delay);
@@ -205,6 +206,7 @@ static int exynos_dwmci_clksel(struct dwmci_host *host)
 	u32 timing;
 
 	switch (host->mmc->selected_mode) {
+	case MMC_HS_400_ES:
 	case MMC_HS_400:
 		timing = CLKSEL_UP_SAMPLE(priv->hs400_timing, priv->tuned_sample);
 		break;
@@ -224,7 +226,8 @@ static int exynos_dwmci_clksel(struct dwmci_host *host)
 
 	dwmci_writel(host, priv->chip->clksel, timing);
 
-	if (CONFIG_IS_ENABLED(MMC_HS400_SUPPORT))
+	if (CONFIG_IS_ENABLED(MMC_HS400_SUPPORT) ||
+	    CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT))
 		exynos_config_hs400(host, host->mmc->selected_mode);
 
 	return 0;
@@ -239,7 +242,8 @@ static unsigned int exynos_dwmci_get_clk(struct dwmci_host *host, uint freq)
 	/* Should be double rate for DDR or HS mode */
 	if ((host->mmc->selected_mode == MMC_DDR_52 &&
 	     host->mmc->bus_width == 8) ||
-	    host->mmc->selected_mode == MMC_HS_400) {
+	    host->mmc->selected_mode == MMC_HS_400 ||
+	    host->mmc->selected_mode == MMC_HS_400_ES) {
 		freq *= 2;
 	}
 
@@ -264,7 +268,8 @@ static void exynos_dwmci_board_init(struct dwmci_host *host)
 {
 	struct dwmci_exynos_priv_data *priv = exynos_dwmmc_get_priv(host);
 
-	if (CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)) {
+	if (CONFIG_IS_ENABLED(MMC_HS400_SUPPORT) ||
+	    CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT)) {
 		priv->saved_strobe_ctrl = dwmci_readl(host, DWMCI_HS400_DLINE_CTRL);
 		priv->saved_dqs_en = dwmci_readl(host, DWMCI_HS400_DQS_EN);
 		priv->saved_dqs_en |= AXI_NON_BLOCKING_WR;
@@ -522,7 +527,7 @@ static int exynos_dwmmc_probe(struct udevice *dev)
 	host->name = dev->name;
 	host->board_init = exynos_dwmci_board_init;
 	host->caps = MMC_MODE_DDR_52MHz | MMC_MODE_HS200 | MMC_MODE_HS400 |
-		     UHS_CAPS;
+		     MMC_MODE_HS400_ES | UHS_CAPS;
 	host->clksel = exynos_dwmci_clksel;
 	host->get_mmc_clk = exynos_dwmci_get_clk;
 

-- 
2.53.0