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[ Upstream commit1fea2eb2f5] The Samsung 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. Fixes:9589f7721e("arm64: dts: Add S2MPS15 PMIC node on exynos7-espresso") Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Link: https://lore.kernel.org/r/20201210212903.216728-8-krzk@kernel.org Signed-off-by: Sasha Levin <sashal@kernel.org>