diff options
| author | Mateusz Majewski <m.majewski2@samsung.com> | 2023-09-11 16:34:14 +0300 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2023-09-14 11:05:21 +0300 |
| commit | ef399736c3ba77fb82d778b1b7285baa65a7e079 (patch) | |
| tree | daa3a9fe206e4ef91cd863817e0bcda092ec20e6 /arch/arm/boot/dts/samsung | |
| parent | 8edc16a1e27a941670907a94d15dbf7f68fbf8c7 (diff) | |
| download | linux-ef399736c3ba77fb82d778b1b7285baa65a7e079.tar.xz | |
ARM: dts: samsung: exynos4210: enable polling
It seems that thermal in Exynos 4210 is broken without this, as it will
never decrease cooling after increasing it.
Signed-off-by: Mateusz Majewski <m.majewski2@samsung.com>
Link: https://lore.kernel.org/r/20230911133417.14042-1-m.majewski2@samsung.com
[krzk: fix comment coding style and line wrapping]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Diffstat (limited to 'arch/arm/boot/dts/samsung')
| -rw-r--r-- | arch/arm/boot/dts/samsung/exynos4210.dtsi | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/arm/boot/dts/samsung/exynos4210.dtsi b/arch/arm/boot/dts/samsung/exynos4210.dtsi index 0e27c3375e2e..510e8665d1a2 100644 --- a/arch/arm/boot/dts/samsung/exynos4210.dtsi +++ b/arch/arm/boot/dts/samsung/exynos4210.dtsi @@ -391,8 +391,16 @@ }; &cpu_thermal { - polling-delay-passive = <0>; - polling-delay = <0>; + /* + * Exynos 4210 supports thermal interrupts, but only for the rising + * threshold. This means that polling is not needed for preventing + * overheating, but only for decreasing cooling when possible. Hence we + * poll with a high delay. Ideally, we would disable polling for the + * first trip point, but this isn't really possible without outrageous + * hacks. + */ + polling-delay-passive = <5000>; + polling-delay = <5000>; }; &gic { |