linux-kernel - Re: [RFT 10/10] arm64: dts: exynos: Enable Arizona interrupt controller in Exynos5433 TM2

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Date:   Mon, 31 Aug 2020 15:11:58 +0200
From:   Marek Szyprowski <m.szyprowski@...sung.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>,
        Kukjin Kim <kgene@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Lee Jones <lee.jones@...aro.org>,
        Sangbeom Kim <sbkim73@...sung.com>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        alsa-devel@...a-project.org
Cc:     Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Sylwester Nawrocki <snawrocki@...nel.org>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Inki Dae <inki.dae@...sung.com>
Subject: Re: [RFT 10/10] arm64: dts: exynos: Enable Arizona interrupt
 controller in Exynos5433 TM2


On 29.08.2020 16:25, Krzysztof Kozlowski wrote:
> The Wolfson Arizona codec is interrupt controller which is required by
> bindings.  This fixes dtbs_check warnings like:
>
>    arch/arm64/boot/dts/exynos/exynos5433-tm2e.dt.yaml: wm5110-codec@0: 'interrupt-controller' is a required property
>    arch/arm64/boot/dts/exynos/exynos5433-tm2e.dt.yaml: wm5110-codec@0: '#interrupt-cells' is a required property
>
> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>

Tested-by: Marek Szyprowski <m.szyprowski@...sung.com>

However I really wonder if it makes sense to expose this to DTS. Indeed, 
the main MFD device of the WM5110 chip is interrupt controller, but its 
interrupts are requested internally by the respective drivers.

> ---
>
> Not tested on HQ. Please kindly review and test.
>
> Best regards,
> Krzysztof
> ---
>   arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
> index bab6c1addd5f..49cd55d6891c 100644
> --- a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
> +++ b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi
> @@ -1242,6 +1242,8 @@
>   
>   		gpio-controller;
>   		#gpio-cells = <2>;
> +		interrupt-controller;
> +		#interrupt-cells = <2>;
>   
>   		wlf,micd-detect-debounce = <300>;
>   		wlf,micd-bias-start-time = <0x1>;

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland