Re: [PATCH v2 1/2] Documentation: mmc: add optional cd-delay-ms property

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Fri, Apr 13, 2018 at 10:18:44AM +0800, Shawn Lin wrote:
> slot-gpio uses a fixed delay, 200ms, before detecting card after the card
> is inserted. 200ms doesn't work for some platforms, so some host drivers
> added their own properties for parsing that from DT, for instance,
> dw_mmc and pxamci. That being said, it should also be tunable when using
> slog-gpio.

slot-gpio?

Or is it cd-gpios?

> 
> Signed-off-by: Shawn Lin <shawn.lin@xxxxxxxxxxxxxx>
> ---
> 
> Changes in v2: None
> 
>  Documentation/devicetree/bindings/mmc/mmc.txt | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt
> index 467cd7b..215b9a2 100644
> --- a/Documentation/devicetree/bindings/mmc/mmc.txt
> +++ b/Documentation/devicetree/bindings/mmc/mmc.txt
> @@ -19,6 +19,8 @@ Optional properties:
>  - wp-gpios: Specify GPIOs for write protection, see gpio binding
>  - cd-inverted: when present, polarity on the CD line is inverted. See the note
>    below for the case, when a GPIO is used for the CD line
> +- cd-delay-ms: Set delay time before detecting card after card insert interrupt.
> +  It's only valid when cd-gpios is present.
>  - wp-inverted: when present, polarity on the WP line is inverted. See the note
>    below for the case, when a GPIO is used for the WP line
>  - disable-wp: When set no physical WP line is present. This property should
> -- 
> 1.9.1
> 
> 
> --
> To unsubscribe from this list: send the line "unsubscribe devicetree" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux USB Devel]     [Linux Media]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux