raspi/linux
1
0
Fork 1
mirror of https://github.com/raspberrypi/linux.git synced 2025-12-06 01:49:46 +00:00
Code Issues Projects Releases Wiki Activity

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

Browse Source 
[ 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 c6541b0e88
commit 2c2d05131e
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/boot/dts/exynos4412-midas.dtsi
View File

@@ -668,7 +668,7 @@
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>;