[PATCH v3 1/8] mmc: core: add the property for hs200

[Jaehoon Chung <jh80.chung@samsung.com>]

mmc-hs200-1.8v and mmc-hs200-1.2v can be used to the general capability.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
---
Changelog V3:
	- Use the "len" instead of "NULL"
Changelog V2:
	- Rename the mmc-hs200-1_8v/1_2v instead of "_caps2_"
	- Add the properties into Documentation/devicetree/bindings/mmc/mmc.txt

 Documentation/devicetree/bindings/mmc/mmc.txt |    2 ++
 drivers/mmc/core/host.c                       |    4 ++++
 2 files changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt
index 458b57f..4bb3894 100644
--- a/Documentation/devicetree/bindings/mmc/mmc.txt
+++ b/Documentation/devicetree/bindings/mmc/mmc.txt
@@ -29,6 +29,8 @@ Optional properties:
 - cap-power-off-card: powering off the card is safe
 - cap-sdio-irq: enable SDIO IRQ signalling on this interface
 - full-pwr-cycle: full power cycle of the card is supported
+- mmc-hs200-1_8v: HS200 mode(1.8V I/O) is supported
+- mmc-hs200-1_2v: HS200 mode(1.2V I/O) is supported
 
 *NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line
 polarity properties, we have to fix the meaning of the "normal" and "inverted"
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index 49bc403..4b81c93 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -429,6 +429,10 @@ int mmc_of_parse(struct mmc_host *host)
 		host->pm_caps |= MMC_PM_KEEP_POWER;
 	if (of_find_property(np, "enable-sdio-wakeup", &len))
 		host->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
+	if (of_find_property(np, "mmc-hs200-1_8v", &len))
+		host->caps2 |= MMC_CAP2_HS200_1_8V_SDR;
+	if (of_find_property(np, "mmc-hs200-1_2v", &len))
+		host->caps2 |= MMC_CAP2_HS200_1_2V_SDR;
 
 	return 0;
 
-- 
1.7.9.5