linux-kernel - Re: [PATCH 5/9] ARM: dts: exynos: correct PMIC interrupt trigger level on Arndale Octa

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Message-ID: <2a374b33-4292-c765-8f92-d72b5d5fcac7@samsung.com>
Date:   Fri, 11 Dec 2020 16:51:55 +0100
From:   Marek Szyprowski <m.szyprowski@...sung.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Lee Jones <lee.jones@...aro.org>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Sylwester Nawrocki <snawrocki@...nel.org>
Subject: Re: [PATCH 5/9] ARM: dts: exynos: correct PMIC interrupt trigger
 level on Arndale Octa

On 10.12.2020 22:28, Krzysztof Kozlowski wrote:
> The Samsung PMIC datasheets describe the interrupt line as active low
> with a requirement of acknowledge from the CPU.  The falling edge
> interrupt will mostly work but it's not correct.
>
> Fixes: 1fed2252713e ("ARM: dts: fix pinctrl for s2mps11-irq on exynos5420-arndale-octa")
> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
> ---
>   arch/arm/boot/dts/exynos5420-arndale-octa.dts | 2 +-
Tested-by: Marek Szyprowski <m.szyprowski@...sung.com>
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm/boot/dts/exynos5420-arndale-octa.dts b/arch/arm/boot/dts/exynos5420-arndale-octa.dts
> index bf457d0c02eb..1aad4859c5f1 100644
> --- a/arch/arm/boot/dts/exynos5420-arndale-octa.dts
> +++ b/arch/arm/boot/dts/exynos5420-arndale-octa.dts
> @@ -349,7 +349,7 @@ pmic@66 {
>   		reg = <0x66>;
>   
>   		interrupt-parent = <&gpx3>;
> -		interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
> +		interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
>   		pinctrl-names = "default";
>   		pinctrl-0 = <&s2mps11_irq>;
>   

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