diff options
| author | Stephen Warren <swarren@nvidia.com> | 2011-08-30 13:17:16 -0600 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-10-26 15:43:42 -0400 |
| commit | 55cd65e48b62c6f08edbb93d5cadf96e876ebcc2 (patch) | |
| tree | 89a2841e84793f86a8b8387fa938c772a0490b2d | |
| parent | 1a5c8e1f4f09e67118f81885a22ceb7bbd2df4ee (diff) | |
mmc: sdhci-tegra: Add 8-bit support to device tree binding.
The previous patch which implemented a DT binding for sdhci-tegra did not
allow all platform data fields to be initialized from DT. The following
were missing:
is_8bit: Implemented by this patch.
pm_flags: Not implemented yet. There are no mainline users of this field.
I'm not quite sure what it's for, and hence how to represent this
in DT; the value ends up being assigned to host->mmc->pm_caps.
While we're at it, fix the binding documentation to refer to "SD/MMC"
instead of "eSDHC", since that's the correct name; "eSDHC" was cut/paste
from the Freescale binding docs.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/nvidia-sdhci.txt | 6 | ||||
| -rw-r--r-- | drivers/mmc/host/sdhci-tegra.c | 3 |
2 files changed, 7 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/mmc/nvidia-sdhci.txt b/Documentation/devicetree/bindings/mmc/nvidia-sdhci.txt index c87f6678272..7e51154679a 100644 --- a/Documentation/devicetree/bindings/mmc/nvidia-sdhci.txt +++ b/Documentation/devicetree/bindings/mmc/nvidia-sdhci.txt @@ -5,13 +5,14 @@ and SDIO types of memory cards. Required properties: - compatible : Should be "nvidia,<chip>-sdhci" -- reg : Should contain eSDHC registers location and length -- interrupts : Should contain eSDHC interrupt +- reg : Should contain SD/MMC registers location and length +- interrupts : Should contain SD/MMC interrupt Optional properties: - cd-gpios : Specify GPIOs for card detection - wp-gpios : Specify GPIOs for write protection - power-gpios : Specify GPIOs for power control +- support-8bit : Boolean, indicates if 8-bit mode should be used. Example: @@ -22,4 +23,5 @@ sdhci@c8000200 { cd-gpios = <&gpio 69 0>; /* gpio PI5 */ wp-gpios = <&gpio 57 0>; /* gpio PH1 */ power-gpios = <&gpio 155 0>; /* gpio PT3 */ + support-8bit; }; diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index 8a114b6211c..d105b52bfec 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -17,6 +17,7 @@ #include <linux/platform_device.h> #include <linux/clk.h> #include <linux/io.h> +#include <linux/of.h> #include <linux/of_gpio.h> #include <linux/gpio.h> #include <linux/mmc/card.h> @@ -152,6 +153,8 @@ static struct tegra_sdhci_platform_data * __devinit sdhci_tegra_dt_parse_pdata( plat->cd_gpio = of_get_named_gpio(np, "cd-gpios", 0); plat->wp_gpio = of_get_named_gpio(np, "wp-gpios", 0); plat->power_gpio = of_get_named_gpio(np, "power-gpios", 0); + if (of_find_property(np, "support-8bit", NULL)) + plat->is_8bit = 1; return plat; } |