[PATCHv2] arm64: dts: meson: Enable active coling using gpio-fan on Odroid N2/N2+

[PATCHv2] arm64: dts: meson: Enable active coling using gpio-fan on Odroid N2/N2+

[Anand Moon]

Odroid N2/N2+ support active cooling via gpio-fan controller.
Add fan controls and tip point for cpu and ddr thermal sensor
on this boards.

Signed-off-by: Anand Moon <linux.amoon@gmail.com>
---
v2: changes tip name cpu-active --> ddr-active
---
 .../dts/amlogic/meson-g12b-odroid-n2.dtsi     | 42 +++++++++++++++++++
 1 file changed, 42 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 fd3fa82e4c33..667d2b774924 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
@@ -39,6 +39,14 @@ emmc_pwrseq: emmc-pwrseq {
 		reset-gpios = <&gpio BOOT_12 GPIO_ACTIVE_LOW>;
 	};
 
+	fan: gpio-fan {
+		compatible = "gpio-fan";
+		gpios = <&gpio_ao GPIOAO_10 GPIO_ACTIVE_HIGH>;
+		/* Using Dummy Speed */
+		gpio-fan,speed-map = <0 0>, <1 1>;
+		#cooling-cells = <2>;
+	};
+
 	leds {
 		compatible = "gpio-leds";
 
@@ -410,6 +418,40 @@ &cpu103 {
 	clock-latency = <50000>;
 };
 
+&cpu_thermal {
+	trips {
+		cpu_active: cpu-active {
+			temperature = <60000>; /* millicelsius */
+			hysteresis = <2000>; /* millicelsius */
+			type = "active";
+		};
+	};
+
+	cooling-maps {
+		map {
+			trip = <&cpu_active>;
+			cooling-device = <&fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+		};
+	};
+};
+
+&ddr_thermal {
+	trips {
+		ddr_active: ddr-active {
+			temperature = <60000>; /* millicelsius */
+			hysteresis = <2000>; /* millicelsius */
+			type = "active";
+		};
+	};
+
+	cooling-maps {
+		map {
+			trip = <&ddr_active>;
+			cooling-device = <&fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+		};
+	};
+};
+
 &ext_mdio {
 	external_phy: ethernet-phy@0 {
 		/* Realtek RTL8211F (0x001cc916) */

base-commit: aae703b02f92bde9264366c545e87cec451de471
-- 
2.38.0


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Re: [PATCHv2] arm64: dts: meson: Enable active coling using gpio-fan on Odroid N2/N2+

[Neil Armstrong]

Hi,

On Fri, 21 Oct 2022 05:09:03 +0000, Anand Moon wrote:
> Odroid N2/N2+ support active cooling via gpio-fan controller.
> Add fan controls and tip point for cpu and ddr thermal sensor
> on this boards.
> 
> 

Thanks, Applied to https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux.git (v6.2/arm64-dt)

[1/1] arm64: dts: meson: Enable active coling using gpio-fan on Odroid N2/N2+
      https://git.kernel.org/amlogic/c/44a201df71739a3c5ef3c40e58ebaccfd052d430

These changes has been applied on the intermediate git tree [1].

The v6.2/arm64-dt branch will then be sent via a formal Pull Request to the Linux SoC maintainers
for inclusion in their intermediate git branches in order to be sent to Linus during
the next merge window, or sooner if it's a set of fixes.

In the cases of fixes, those will be merged in the current release candidate
kernel and as soon they appear on the Linux master branch they will be
backported to the previous Stable and Long-Stable kernels [2].

The intermediate git branches are merged daily in the linux-next tree [3],
people are encouraged testing these pre-release kernels and report issues on the
relevant mailing-lists.

If problems are discovered on those changes, please submit a signed-off-by revert
patch followed by a corrective changeset.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux.git
[2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
[3] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git

-- 
Neil

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