From: Krzysztof Kozlowski <krzk@kernel.org>
Date: Thu, 10 Dec 2020 22:25:20 +0100
Subject: ARM: dts: exynos: correct MUIC interrupt trigger level on Midas
 family
Git-commit: 15107e443ab8c6cb35eff10438993e4bc944d9ae
Patch-mainline: v5.13-rc1
References: git-fixes

The Maxim MUIC 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: 7eec1266751b ("ARM: dts: Add Maxim 77693 PMIC to exynos4412-trats2")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201210212534.216197-4-krzk@kernel.org

Acked-by: Ivan T. Ivanov <iivanov@suse.de>
---
 arch/arm/boot/dts/exynos4412-midas.dtsi |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm/boot/dts/exynos4412-midas.dtsi
+++ b/arch/arm/boot/dts/exynos4412-midas.dtsi
@@ -139,7 +139,7 @@
 		max77693@66 {
 			compatible = "maxim,max77693";
 			interrupt-parent = <&gpx1>;
-			interrupts = <5 IRQ_TYPE_EDGE_FALLING>;
+			interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&max77693_irq>;
 			reg = <0x66>;