linux-kernel - Re: [PATCH 06/10] arm64: dts: actions: Add S900 gpio nodes

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Date:   Sat, 17 Feb 2018 22:08:37 +0100
From:   Andreas Färber <afaerber@...e.de>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        linus.walleij@...aro.org, robh+dt@...nel.org
Cc:     liuwei@...ions-semi.com, mp-cs@...ions-semi.com,
        96boards@...obotics.com, devicetree@...r.kernel.org,
        daniel.thompson@...aro.org, amit.kucheria@...aro.org,
        linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 06/10] arm64: dts: actions: Add S900 gpio nodes

Am 17.02.2018 um 21:44 schrieb Manivannan Sadhasivam:
> Add gpio nodes for Actions Semi S900 SoC.
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> ---
>  arch/arm64/boot/dts/actions/s900.dtsi | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/actions/s900.dtsi b/arch/arm64/boot/dts/actions/s900.dtsi
> index 0156483f0f4d..e359509ad9d3 100644
> --- a/arch/arm64/boot/dts/actions/s900.dtsi
> +++ b/arch/arm64/boot/dts/actions/s900.dtsi
> @@ -180,6 +180,13 @@
>  			clocks = <&cmu CLK_GPIO>;
>  		};
>  
> +		gpio: gpio@...b0000 {
> +			compatible = "actions,s900-gpio";
> +			reg = <0x0 0xe01b0000 0x0 0x1000>;
> +			gpio-controller;

Same as the bindings example, this is lacking gpio-ranges.

https://github.com/afaerber/linux/commit/f4526bbacd75d014a69e6e3ff051638589ee71a3

Also why have only one node? That forces the information about GPIO
banks into the driver rather than into the DT.

> +			#gpio-cells = <2>;
> +		};
> +
>  		timer: timer@...28000 {
>  			compatible = "actions,s900-timer";
>  			reg = <0x0 0xe0228000 0x0 0x8000>;

Regards,
Andreas

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