[PATCH] ARM: dts: omap3430-sdp: add dip switch information for MMC operation

[PATCH] ARM: dts: omap3430-sdp: add dip switch information for MMC operation

[Nishanth Menon]

MMC 8 bit mode operation depends on dip switch setting which is not
obvious - The current board file has this description. However, with
removal of the board file in the future, this information will be lost
and has to be rediscovered.

Signed-off-by: Nishanth Menon <nm@ti.com>
---
 arch/arm/boot/dts/omap3430-sdp.dts |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/omap3430-sdp.dts b/arch/arm/boot/dts/omap3430-sdp.dts
index 281914e..cd3d047 100644
--- a/arch/arm/boot/dts/omap3430-sdp.dts
+++ b/arch/arm/boot/dts/omap3430-sdp.dts
@@ -34,6 +34,10 @@
 &mmc1 {
 	vmmc-supply = <&vmmc1>;
 	vmmc_aux-supply = <&vsim>;
+	/*
+	 * S6-3 must be in ON position for 8 bit mode to function
+	 * Else, use 4 bit mode
+	 */
 	bus-width = <8>;
 };
 
-- 
1.7.9.5

Re: [PATCH] ARM: dts: omap3430-sdp: add dip switch information for MMC operation

[Benoit Cousson]

Hi Nishanth,

On 06/01/2014 23:37, Nishanth Menon wrote:
> MMC 8 bit mode operation depends on dip switch setting which is not
> obvious - The current board file has this description. However, with
> removal of the board file in the future, this information will be lost
> and has to be rediscovered.

Thanks for that. I've just applied it.

Regards,
Benoit


> Signed-off-by: Nishanth Menon <nm@ti.com>
> ---
>   arch/arm/boot/dts/omap3430-sdp.dts |    4 ++++
>   1 file changed, 4 insertions(+)
>
> diff --git a/arch/arm/boot/dts/omap3430-sdp.dts b/arch/arm/boot/dts/omap3430-sdp.dts
> index 281914e..cd3d047 100644
> --- a/arch/arm/boot/dts/omap3430-sdp.dts
> +++ b/arch/arm/boot/dts/omap3430-sdp.dts
> @@ -34,6 +34,10 @@
>   &mmc1 {
>   	vmmc-supply = <&vmmc1>;
>   	vmmc_aux-supply = <&vsim>;
> +	/*
> +	 * S6-3 must be in ON position for 8 bit mode to function
> +	 * Else, use 4 bit mode
> +	 */
>   	bus-width = <8>;
>   };

-- 
Benoît Cousson
BayLibre
Embedded Linux Technology Lab
www.baylibre.com
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