[PATCH] mmc: dt: Add card-detection properties to core binding.

[Shawn Guo]

On Wed, Aug 22, 2012 at 02:05:35PM -0400, Chris Ball wrote:
> Signed-off-by: Chris Ball <cjb at laptop.org>

Acked-by: Shawn Guo <shawn.guo at linaro.org>

Will move sdhci-esdhc-imx driver to this soon.

Regards,
Shawn

> ---
>  Documentation/devicetree/bindings/mmc/mmc.txt | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt
> index 8a6811f..8e2e0ba 100644
> --- a/Documentation/devicetree/bindings/mmc/mmc.txt
> +++ b/Documentation/devicetree/bindings/mmc/mmc.txt
> @@ -9,12 +9,17 @@ Interpreted by the OF core:
>  Required properties:
>  - bus-width: Number of data lines, can be <1>, <4>, or <8>
>  
> +Card detection:
> +If no property below is supplied, standard SDHCI card detect is used.
> +Only one of the properties in this section should be supplied:
> +  - broken-cd: There is no card detection available; polling must be used.
> +  - cd-gpios: Specify GPIOs for card detection, see gpio binding
> +  - non-removable: non-removable slot (like eMMC); assume always present.
> +
>  Optional properties:
> -- cd-gpios: Specify GPIOs for card detection, see gpio binding
>  - wp-gpios: Specify GPIOs for write protection, see gpio binding
>  - cd-inverted: when present, polarity on the cd gpio line is inverted
>  - wp-inverted: when present, polarity on the wp gpio line is inverted
> -- non-removable: non-removable slot (like eMMC)
>  - max-frequency: maximum operating clock frequency
>  
>  Example:
> -- 
> Chris Ball   <cjb at laptop.org>   <http://printf.net/>
> One Laptop Per Child