From 17a21edc510848bd52fe9e63c8198419c81f48b7 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Thu, 10 Dec 2020 22:25:21 +0100 Subject: [PATCH] ARM: dts: exynos: correct PMIC interrupt trigger level on Midas family [ Upstream commit e52dcd6e70fab51f53292e53336ecb007bb60889 ] The Maxim PMIC datasheets describe the interrupt line as active low with a requirement of acknowledge from the CPU. Without specifying the interrupt type in Devicetree, kernel might apply some fixed configuration, not necessarily working for this hardware. Additionally, the interrupt line is shared so using level sensitive interrupt is here especially important to avoid races. Fixes: 15dfdfad2d4a ("ARM: dts: Add basic dts for Exynos4412-based Trats 2 board") Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20201210212534.216197-5-krzk@kernel.org Signed-off-by: Sasha Levin --- arch/arm/boot/dts/exynos4412-midas.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/exynos4412-midas.dtsi b/arch/arm/boot/dts/exynos4412-midas.dtsi index c6cc3d2a1121a..60fbad25b5f26 100644 --- a/arch/arm/boot/dts/exynos4412-midas.dtsi +++ b/arch/arm/boot/dts/exynos4412-midas.dtsi @@ -579,7 +579,7 @@ max77686: max77686_pmic@9 { compatible = "maxim,max77686"; interrupt-parent = <&gpx0>; - interrupts = <7 IRQ_TYPE_NONE>; + interrupts = <7 IRQ_TYPE_LEVEL_LOW>; pinctrl-0 = <&max77686_irq>; pinctrl-names = "default"; reg = <0x09>; -- 2.47.3