[04/14] mmc: dw_mmc: add the capability to support hs200 mode

Commit Message

Seungwon Jeon Aug. 21, 2013, 1:50 p.m. UTC

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 <[e-mail]>
---
 .../devicetree/bindings/mmc/synopsis-dw-mshc.txt   |    5 +++++
 drivers/mmc/host/dw_mmc.c                          |    6 ++++++
 2 files changed, 11 insertions(+), 0 deletions(-)

Patch

diff --git a/Documentation/devicetree/bindings/mmc/synopsis-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/synopsis-dw-mshc.txt
index cdcebea..ae5f8e8 100644
--- 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 5d1123f..e8396f9 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2186,6 +2186,12 @@  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;
 }