Files
operating-system/buildroot-external/board/hardkernel/patches/linux/0006-arm64-dts-meson-g12b-odroid-n2-add-fan-as-cooling-de.patch
Stefan Agner 10a4710248 Fix reboot on ODROID-N2 (again) (#1722)
To make HDMI CEC work, we have to compile MESON_DRM as a module
(see #1717). However, this essentially reverts #1347, which fixed the
reboot problem by compiling the driver into the kernel.

Hence we need to reintroduce the earlier fix from #1345, which reverts
the offending commit causing the reboot problem.
2022-01-17 14:09:12 +01:00

75 lines
2.5 KiB
Diff

From f1120f132dbdf2e7f7acf328de55bbdce877d882 Mon Sep 17 00:00:00 2001
Message-Id: <f1120f132dbdf2e7f7acf328de55bbdce877d882.1642331593.git.stefan@agner.ch>
In-Reply-To: <c7825747afd8bb975dc918f28e4afe8058a518f3.1642331593.git.stefan@agner.ch>
References: <c7825747afd8bb975dc918f28e4afe8058a518f3.1642331593.git.stefan@agner.ch>
From: Stefan Agner <stefan@agner.ch>
Date: Mon, 11 Jan 2021 15:53:55 +0100
Subject: [PATCH 06/10] arm64: dts: meson: g12b: odroid-n2: add fan as cooling
device
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Add the GPIO fan as a cooling device for the CPU thermal zone. Since we
have only full fan speed available with this, set the tripping point to
65°C which is the highest tripping point which Hardkernel used in their
downstream kernel.
Signed-off-by: Stefan Agner <stefan@agner.ch>
---
.../dts/amlogic/meson-g12b-odroid-n2.dtsi | 38 +++++++++++++++++++
1 file changed, 38 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
index e8a3ede698b5..dd345c6aa4b5 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
@@ -388,6 +388,44 @@ &clkc_audio {
status = "okay";
};
+&cpu_thermal {
+ trips {
+ cpu_warm: cpu_warm {
+ hysteresis = <5000>;
+ temperature = <65000>;
+ type = "active";
+ };
+ };
+
+ cooling-maps {
+ map0 {
+ cooling-device =
+ <&fan0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ trip = <&cpu_warm>;
+ };
+ map1 {
+ trip = <&cpu_passive>;
+ cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu100 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu101 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu102 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu103 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&fan0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ map2 {
+ trip = <&cpu_hot>;
+ cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu100 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu101 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu102 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu103 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&fan0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+};
+
&cpu0 {
cpu-supply = <&vddcpu_b>;
operating-points-v2 = <&cpu_opp_table_0>;
--
2.34.1