Provide the option to configure these speed modes per host,
for those host driver's that can't distinguish this in runtime.
Specially, if host can support HS400, it means that host can also
support HS200.
Signed-off-by: Seungwon Jeon <tgih....@samsung.com>
---
Documentation/devicetree/bindings/mmc/mmc.txt | 2 ++
drivers/mmc/core/host.c | 4 ++++
2 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt
b/Documentation/devicetree/bindings/mmc/mmc.txt
index 9dce540..3c18001 100644
--- a/Documentation/devicetree/bindings/mmc/mmc.txt
+++ b/Documentation/devicetree/bindings/mmc/mmc.txt
@@ -38,6 +38,8 @@ Optional properties:
- mmc-highspeed-ddr-1_2v: eMMC high-speed DDR mode(1.2V I/O) is supported
- mmc-hs200-1_8v: eMMC HS200 mode(1.8V I/O) is supported
- mmc-hs200-1_2v: eMMC HS200 mode(1.2V I/O) is supported
+- mmc-hs400-1_8v: eMMC HS400 mode(1.8V I/O) is supported
+- mmc-hs400-1_2v: eMMC HS400 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 fdea825..95cceae 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -447,6 +447,10 @@ int mmc_of_parse(struct mmc_host *host)
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;
+ if (of_find_property(np, "mmc-hs400-1_8v", &len))
+ host->caps2 |= MMC_CAP2_HS400_1_8V | MMC_CAP2_HS200_1_8V_SDR;
+ if (of_find_property(np, "mmc-hs400-1_2v", &len))
+ host->caps2 |= MMC_CAP2_HS400_1_2V | MMC_CAP2_HS200_1_2V_SDR;
return 0;
--
1.7.0.4
--
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