linux-kernel - Re: [PATCH v2 28/28] arm64: dts: exynos: use dedicated wake-up pinctrl compatible in ExynosAutov9

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Date:   Fri, 14 Jan 2022 18:31:11 +0200
From:   Sam Protsenko <semen.protsenko@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Cc:     Tomasz Figa <tomasz.figa@...il.com>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-gpio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Chanho Park <chanho61.park@...sung.com>,
        Alim Akhtar <alim.akhtar@...il.com>
Subject: Re: [PATCH v2 28/28] arm64: dts: exynos: use dedicated wake-up
 pinctrl compatible in ExynosAutov9

On Tue, 11 Jan 2022 at 22:19, Krzysztof Kozlowski
<krzysztof.kozlowski@...onical.com> wrote:
>
> Older Samsung Exynos SoC pin controller nodes (Exynos3250, Exynos4,
> Exynos5, Exynos5433) with external wake-up interrupts, expected to have
> one interrupt for multiplexing these wake-up interrupts.  Also they
> expected to have exactly one pin controller capable of external wake-up
> interrupts.
>
> It seems however that newer ARMv8 Exynos SoC like Exynos850 and
> ExynosAutov9 have differences:
> 1. No multiplexed external wake-up interrupt, only direct,
> 2. More than one pin controller capable of external wake-up interrupts.
>
> Use dedicated ExynosAutov9 compatible for its external wake-up interrupts
> controller to indicate the differences.
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
> ---

Reviewed-by: Sam Protsenko <semen.protsenko@...aro.org>

>  arch/arm64/boot/dts/exynos/exynosautov9.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/exynos/exynosautov9.dtsi b/arch/arm64/boot/dts/exynos/exynosautov9.dtsi
> index de8fcb82eaec..807d500d6022 100644
> --- a/arch/arm64/boot/dts/exynos/exynosautov9.dtsi
> +++ b/arch/arm64/boot/dts/exynos/exynosautov9.dtsi
> @@ -208,7 +208,7 @@ pinctrl_alive: pinctrl@...50000 {
>                         reg = <0x10450000 0x1000>;
>
>                         wakeup-interrupt-controller {
> -                               compatible = "samsung,exynos7-wakeup-eint";
> +                               compatible = "samsung,exynosautov9-wakeup-eint";
>                         };
>                 };
>
> --
> 2.32.0
>