From: Ulf Hansson <ulf.hansson@linaro.org>
To: linux-mmc@vger.kernel.org, Chris Ball <chris@printf.net>
Cc: Jaehoon Chung <jh80.chung@samsung.com>,
devicetree@vger.kernel.org, Ulf Hansson <ulf.hansson@linaro.org>
Subject: [PATCH 1/3] mmc: core: Add DT bindings for SD card's UHS bus speed modes
Date: Fri, 14 Feb 2014 13:27:07 +0100 [thread overview]
Message-ID: <1392380829-8473-1-git-send-email-ulf.hansson@linaro.org> (raw)
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 --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))
--
1.7.9.5
next reply other threads:[~2014-02-14 12:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-14 12:27 Ulf Hansson [this message]
2014-02-14 12:27 ` [PATCH 2/3] mmc: core: Add DT bindings for eMMC high-speed DDR 1.8/1.2V Ulf Hansson
2014-02-17 6:56 ` Jaehoon Chung
2014-02-14 12:27 ` [PATCH 3/3] mmc: core: Add DT bindings for eMMC HS200 1.8/1.2V Ulf Hansson
2014-02-17 6:55 ` [PATCH 1/3] mmc: core: Add DT bindings for SD card's UHS bus speed modes Jaehoon Chung
2014-02-22 18:52 ` Chris Ball
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