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ARM: dts: exynos: correct PMIC interrupt trigger level on Midas family

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[ Upstream commit e52dcd6e70 ]

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: 15dfdfad2d ("ARM: dts: Add basic dts for Exynos4412-based Trats 2 board")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201210212534.216197-5-krzk@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Krzysztof Kozlowski
2020-12-10 22:25:21 +01:00
committed by Greg Kroah-Hartman
parent 6cf80f1fc1
commit f9b701bc13
1 changed files with 1 additions and 1 deletions
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arch/arm/boot/dts/exynos4412-midas.dtsi
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@@ -588,7 +588,7 @@
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>;