diff options
Diffstat (limited to 'target/linux/mediatek')
| -rw-r--r-- | target/linux/mediatek/patches-5.15/193-dts-mt7623-thermal_zone_fix.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-5.15/193-dts-mt7623-thermal_zone_fix.patch b/target/linux/mediatek/patches-5.15/193-dts-mt7623-thermal_zone_fix.patch new file mode 100644 index 0000000000..1cfb53d620 --- /dev/null +++ b/target/linux/mediatek/patches-5.15/193-dts-mt7623-thermal_zone_fix.patch @@ -0,0 +1,48 @@ +From 824d56e753a588fcfd650db1822e34a02a48bb77 Mon Sep 17 00:00:00 2001 +From: Bruno Umuarama <anonimou_eu@hotmail.com> +Date: Thu, 13 Oct 2022 21:18:21 +0000 +Subject: [PATCH] mediatek: mt7623: fix thermal zone +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Raising the temperatures for passive and active trips. @VA1DER +proposed at issue 9396 to remove passive trip. This commit relates to +his suggestion. + +Without this patch. the CPU will be throttled all the way down to 98MHz +if the temperature rises even a degree above the trip point, and it was +further discovered that if the internal temperature of the device is +above the first trip point temperature when it boots then it will start +in a throttled state and even +$ echo disabled > /sys/class/thermal/thermal_zone0/mode +will have no effect. + +The patch increases the passive trip point and active cooling map. The +throttling temperature will then be at 77°C and 82°C, which is still a +low enough temperature for ARM devices to not be in the real danger +zone, and gives some operational headroom. + +Signed-off-by: Bruno Umuarama <anonimou_eu@hotmail.com> +--- + arch/arm/boot/dts/mt7623.dtsi | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +--- a/arch/arm/boot/dts/mt7623.dtsi ++++ b/arch/arm/boot/dts/mt7623.dtsi +@@ -160,13 +160,13 @@ + + trips { + cpu_passive: cpu-passive { +- temperature = <57000>; ++ temperature = <77000>; + hysteresis = <2000>; + type = "passive"; + }; + + cpu_active: cpu-active { +- temperature = <67000>; ++ temperature = <82000>; + hysteresis = <2000>; + type = "active"; + }; |