From: Krzysztof Kozlowski krzk@kernel.org
[ Upstream commit 15107e443ab8c6cb35eff10438993e4bc944d9ae ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- 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 342abf97921e..79e6bd56f9ad 100644 --- 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>;