github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-31 10:33:41 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

ARM: dts: exynos: correct PMIC interrupt trigger level on Odroid X/U3 family

Browse Source 
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: eea6653aae ("ARM: dts: Enable PMIC interrupts for exynos4412-odroid-common")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201210212534.216197-6-krzk@kernel.org
This commit is contained in:
Krzysztof Kozlowski 2020-12-10 22:25:22 +01:00
parent e52dcd6e70
commit 6503c568e9
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -278,7 +278,7 @@ usb3503: usb-hub@8 {
max77686: pmic@9 {
compatible = "maxim,max77686";
interrupt-parent = <&gpx3>;
interrupts = <2 IRQ_TYPE_NONE>;
interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
pinctrl-names = "default";
pinctrl-0 = <&max77686_irq>;
reg = <0x09>;