linux-kernel - Re: [PATCH 2/2] am335x-boneblack: add eMMC DT entry

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Date:	Wed, 11 Sep 2013 15:36:45 +0530
From:	Sekhar Nori <nsekhar@...com>
To:	Koen Kooi <koen@...inion.thruhere.net>
CC:	<linux-omap@...r.kernel.org>, <bcousson@...libre.com>,
	<tony@...mide.com>, <rob.herring@...xeda.com>,
	<pawel.moll@....com>, <mark.rutland@....com>,
	<swarren@...dotorg.org>, <ijc+devicetree@...lion.org.uk>,
	<linux@....linux.org.uk>, <devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] am335x-boneblack: add eMMC DT entry

On Wednesday 11 September 2013 11:42 AM, Koen Kooi wrote:
> Signed-off-by: Koen Kooi <koen@...inion.thruhere.net>
> ---
>  arch/arm/boot/dts/am335x-bone-common.dtsi |  7 +++++++
>  arch/arm/boot/dts/am335x-boneblack.dts    | 15 +++++++++++++++
>  2 files changed, 22 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/am335x-bone-common.dtsi b/arch/arm/boot/dts/am335x-bone-common.dtsi
> index ced256c..9c61fef 100644
> --- a/arch/arm/boot/dts/am335x-bone-common.dtsi
> +++ b/arch/arm/boot/dts/am335x-bone-common.dtsi
> @@ -241,6 +241,13 @@
>  			regulator-always-on;
>  		};
>  	};
> +
> +	vmmcsd_fixed: fixedregulator@0 {
> +		compatible = "regulator-fixed";
> +		regulator-name = "vmmcsd_fixed";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +	};
>  };
>  
>  &cpsw_emac0 {
> diff --git a/arch/arm/boot/dts/am335x-boneblack.dts b/arch/arm/boot/dts/am335x-boneblack.dts
> index 197cadf..c09947a 100644
> --- a/arch/arm/boot/dts/am335x-boneblack.dts
> +++ b/arch/arm/boot/dts/am335x-boneblack.dts
> @@ -15,3 +15,18 @@
>  	regulator-max-microvolt = <1800000>;
>  	regulator-always-on;
>  };
> +
> +&mmc1 { 
> +	vmmc-supply = <&vmmcsd_fixed>;
> +};
> +
> +&mmc2 { 
> +	vmmc-supply = <&vmmcsd_fixed>;
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&emmc_pins>;
> +	bus-width = <8>;
> +	ti,non-removable;

There is a standard binding available for this: "non-removable"
There should not be a need to introduce a TI specific binding for this
(I know this is not your fault).

I will send a patch to change the existing .dts files and update the
driver - can you drop this line for now so we don't introduce more
incompatibilities? I can send a patch adding "non-removable" to this
node as part of my clean-up series.

Thanks,
Sekhar

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