[PATCH 3/3] mmc: core: Add DT bindings for eMMC HS200 1.8/1.2V
From: Ulf Hansson <hidden>
Date: 2014-02-14 12:27:09
Also in:
linux-mmc
Subsystem:
multimedia card (mmc), secure digital (sd) and sdio subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Ulf Hansson, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: Jaehoon Chung <jh80.chung@samsung.com> Provide the option to configure these speed modes per host, for those host driver's that can't distinguish this in runtime. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Ulf Hansson <redacted> --- 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 519d952..9dce540 100644
--- a/Documentation/devicetree/bindings/mmc/mmc.txt
+++ b/Documentation/devicetree/bindings/mmc/mmc.txt@@ -36,6 +36,8 @@ Optional properties: - full-pwr-cycle: full power cycle of the card is supported - mmc-highspeed-ddr-1_8v: eMMC high-speed DDR mode(1.8V I/O) is supported - 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 *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 d014127..453573d 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c@@ -443,6 +443,10 @@ int mmc_of_parse(struct mmc_host *host) host->caps |= MMC_CAP_1_8V_DDR; if (of_find_property(np, "mmc-ddr-1_2v", &len)) host->caps |= MMC_CAP_1_2V_DDR; + 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