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Krzysztof Kozlowski 6cf80f1fc1 ARM: dts: exynos: correct MUIC interrupt trigger level on Midas family
[ 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: 7eec126675 ("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>
2021-05-14 09:44:16 +02:00
arch ARM: dts: exynos: correct MUIC interrupt trigger level on Midas family 2021-05-14 09:44:16 +02:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
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In order to build the documentation, use ``make htmldocs`` or
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There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
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the problems which may result by upgrading your kernel.