linux-kernel - Re: [PATCH v2 1/4] ARM: dts: sun8i: Add PWM pin in H3

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Date:   Wed, 31 Aug 2016 16:33:26 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Milo Kim <woogyom.kim@...il.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Thierry Reding <thierry.reding@...il.com>,
        devicetree <devicetree@...r.kernel.org>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        linux-pwm@...r.kernel.org,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/4] ARM: dts: sun8i: Add PWM pin in H3

On Wed, Aug 31, 2016 at 4:25 PM, Milo Kim <woogyom.kim@...il.com> wrote:
> H3 PA5 pin is assigned for single PWM channel.
>
> Cc: Rob Herring <robh+dt@...nel.org>
> Cc: Maxime Ripard <maxime.ripard@...e-electrons.com>
> Cc: Chen-Yu Tsai <wens@...e.org>
> Cc: devicetree@...r.kernel.org
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Milo Kim <woogyom.kim@...il.com>
> ---
>  arch/arm/boot/dts/sun8i-h3.dtsi | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/arch/arm/boot/dts/sun8i-h3.dtsi b/arch/arm/boot/dts/sun8i-h3.dtsi
> index fdf9fdb..05d0c4b 100644
> --- a/arch/arm/boot/dts/sun8i-h3.dtsi
> +++ b/arch/arm/boot/dts/sun8i-h3.dtsi
> @@ -360,6 +360,13 @@
>                                 allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
>                         };
>
> +                       pwm0_pin_a: pwm0@0 {

This is the only possible configuration. You can drop the _a suffix
from the label, and @0 from the node name.

ChenYu

> +                               allwinner,pins = "PA5";
> +                               allwinner,function = "pwm0";
> +                               allwinner,drive = <SUN4I_PINCTRL_10_MA>;
> +                               allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
> +                       };
> +
>                         uart0_pins_a: uart0@0 {
>                                 allwinner,pins = "PA4", "PA5";
>                                 allwinner,function = "uart0";
> --
> 2.9.3
>