mmc: dw_mmc: add the capability to support hs200 mode

As host controller can support eMMC's HS200 mode at 1.8V or 1.2V,
these capability will be added.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Tested-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

diff --git a/Documentation/devicetree/bindings/mmc/synopsis-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/synopsis-dw-mshc.txt
index cdcebea9c6f55f55e87f7647d2d8670c04e470b4..ae5f8e89e8454055694ec2fdcf57376db923e6dc 100644 (file)
--- a/Documentation/devicetree/bindings/mmc/synopsis-dw-mshc.txt
+++ b/Documentation/devicetree/bindings/mmc/synopsis-dw-mshc.txt
@@ -66,6 +66,10 @@ Optional properties:
 
 * supports-highspeed: Enables support for high speed cards (up to 50MHz)
 
+* caps2-mmc-hs200-1_8v: Supports mmc HS200 SDR 1.8V mode
+
+* caps2-mmc-hs200-1_2v: Supports mmc HS200 SDR 1.2V mode
+
 * broken-cd: as documented in mmc core bindings.
 
 * vmmc-supply: The phandle to the regulator to use for vmmc.  If this is
@@ -95,6 +99,7 @@ board specific portions as listed below.
                clock-frequency = <400000000>;
                num-slots = <1>;
                supports-highspeed;
+               caps2-mmc-hs200-1_8v;
                broken-cd;
                fifo-depth = <0x80>;
                card-detect-delay = <200>;

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 696bb468fc8e7c584d34a2fb80b047d72efe38d8..d9f864fd0771e2105cec53393006e91b1bf8d608 100644 (file)
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2187,6 +2187,12 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
        if (of_find_property(np, "enable-sdio-wakeup", NULL))
                pdata->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
 
+       if (of_find_property(np, "caps2-mmc-hs200-1_8v", NULL))
+               pdata->caps2 |= MMC_CAP2_HS200_1_8V_SDR;
+
+       if (of_find_property(np, "caps2-mmc-hs200-1_2v", NULL))
+               pdata->caps2 |= MMC_CAP2_HS200_1_2V_SDR;
+
        return pdata;
 }