Re: [PATCH 1/3] mmc: core: Add DT bindings for SD card's UHS bus speed modes
From: Jaehoon Chung <jh80.chung@samsung.com>
Date: 2014-02-17 06:55:54
Also in:
linux-mmc
Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Best Regards, Jaehoon Chung On 02/14/2014 09:27 PM, Ulf Hansson wrote:
quoted hunk ↗ jump to hunk
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 <redacted> --- 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 supporteddiff --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))