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[1/3] mmc: core: Add DT bindings for SD card's UHS bus speed modes

Message ID 1392380829-8473-1-git-send-email-ulf.hansson@linaro.org
State Accepted
Commit b66bd0e4d00c89102851c1bc9a0f738a4ad9ca2d
Headers show

Commit Message

Ulf Hansson Feb. 14, 2014, 12:27 p.m. UTC 
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: Ulf Hansson <ulf.hansson@linaro.org>
---
 Documentation/devicetree/bindings/mmc/mmc.txt |    5 +++++
 drivers/mmc/core/host.c                       |   10 ++++++++++
 2 files changed, 15 insertions(+)
diff mbox

Patch

diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt
index 458b57f..bd2ce67 100644
--- a/Documentation/devicetree/bindings/mmc/mmc.txt
+++ b/Documentation/devicetree/bindings/mmc/mmc.txt
@@ -26,6 +26,11 @@  Optional properties:
   this system, even if the controller claims it is.
 - cap-sd-highspeed: SD high-speed timing is supported
 - cap-mmc-highspeed: MMC high-speed timing is supported
+- sd-uhs-sdr12: SD UHS SDR12 speed is supported
+- sd-uhs-sdr25: SD UHS SDR25 speed is supported
+- sd-uhs-sdr50: SD UHS SDR50 speed is supported
+- sd-uhs-sdr104: SD UHS SDR104 speed is supported
+- sd-uhs-ddr50: SD UHS DDR50 speed is supported
 - 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
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index 49bc403..2644d91 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -419,6 +419,16 @@  int mmc_of_parse(struct mmc_host *host)
 		host->caps |= MMC_CAP_SD_HIGHSPEED;
 	if (of_find_property(np, "cap-mmc-highspeed", &len))
 		host->caps |= MMC_CAP_MMC_HIGHSPEED;
+	if (of_find_property(np, "sd-uhs-sdr12", &len))
+		host->caps |= MMC_CAP_UHS_SDR12;
+	if (of_find_property(np, "sd-uhs-sdr25", &len))
+		host->caps |= MMC_CAP_UHS_SDR25;
+	if (of_find_property(np, "sd-uhs-sdr50", &len))
+		host->caps |= MMC_CAP_UHS_SDR50;
+	if (of_find_property(np, "sd-uhs-sdr104", &len))
+		host->caps |= MMC_CAP_UHS_SDR104;
+	if (of_find_property(np, "sd-uhs-ddr50", &len))
+		host->caps |= MMC_CAP_UHS_DDR50;
 	if (of_find_property(np, "cap-power-off-card", &len))
 		host->caps |= MMC_CAP_POWER_OFF_CARD;
 	if (of_find_property(np, "cap-sdio-irq", &len))