linux-kernel - Re: [PATCH 1/2] ARM: dts: sun4i: Add CAN node and can0_pins

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Message-ID: <20170320074926.fo6jgjv3qerkz2cu@lukather>
Date:   Mon, 20 Mar 2017 08:49:26 +0100
From:   Maxime Ripard <maxime.ripard@...e-electrons.com>
To:     Patrick Menschel <menschel.p@...teo.de>
Cc:     robh+dt@...nel.org, mark.rutland@....com, linux@...linux.org.uk,
        wens@...e.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-can@...r.kernel.org
Subject: Re: [PATCH 1/2] ARM: dts: sun4i: Add CAN node and can0_pins_a
 pinctrl settings

Hi Patrick,

On Sun, Mar 12, 2017 at 02:28:10PM +0100, Patrick Menschel wrote:
> The A10 SoC has an on-board CAN controller. This patch adds the device node
> and the corresponding pinctrl settings for pins PH20 and PH21.
> 
> This patch is adapted from the description in
> Documentation/devicetree/bindings/net/can/sun4i_can.txt
> 
> Signed-off-by: Patrick Menschel <menschel.p@...teo.de>
> ---
>  arch/arm/boot/dts/sun4i-a10.dtsi | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/sun4i-a10.dtsi b/arch/arm/boot/dts/sun4i-a10.dtsi
> index b14a428..210b616 100644
> --- a/arch/arm/boot/dts/sun4i-a10.dtsi
> +++ b/arch/arm/boot/dts/sun4i-a10.dtsi
> @@ -1160,6 +1160,13 @@
>  				allwinner,drive = <SUN4I_PINCTRL_10_MA>;
>  				allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
>  			};
> +
> +			can0_pins_a: can0@0 {

That should be ordered by alphabetical order.

> +				allwinner,pins = "PH20","PH21";
> +				allwinner,function = "can";
> +				allwinner,drive = <SUN4I_PINCTRL_10_MA>;
> +				allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;

We've switched to a new, generic, binding recently for the pinctrl
nodes.

In your case, that would mean dropping "allwinner," from the pins and
functions properties, and droping the last two properties entirely.

> +			};
>  		};
>  
>  		timer@...20c00 {
> @@ -1376,5 +1383,13 @@
>  			clocks = <&apb1_gates 7>;
>  			status = "disabled";
>  		};
> +
> +		can0: can@...2bc00 {

And this one should be ordered by rising physical addresses.

Thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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