[PATCH 1/2] ipq807x: ZyXEL NBG7815: add fan support

[Enrico Mioso]

Add on/off fan support for the ZyXEL NBG7815. Single CPU cores, cluster
CPU temperatures and the Aquantia PHY temperature sensor are monitored. The
tmp103 sensor is missing from this patch, and can be added later, when kernel
is bumped to 6.x, as it seems to require non-trivial hwmon backporting.
Add kmod-phy-aquantia as default package while at it.

Note: this patch has been marked RFT, since temperature values tuning is
needed from someone actively using this device in high load conditions.
Thanks to robimarko for helping me out.

CC: Andre Valentin <avalentin at marcant.net>
CC: Karol Przybylski <karol.przybylski at esm-technology.pl>
Signed-off-by: Enrico Mioso <mrkiko.rs at gmail.com>
---
 .../arm64/boot/dts/qcom/ipq8074-nbg7815.dts   | 119 ++++++++++++++++++
 target/linux/ipq807x/image/generic.mk         |   2 +-
 2 files changed, 120 insertions(+), 1 deletion(-)

diff --git a/target/linux/ipq807x/files/arch/arm64/boot/dts/qcom/ipq8074-nbg7815.dts b/target/linux/ipq807x/files/arch/arm64/boot/dts/qcom/ipq8074-nbg7815.dts
index 537dd52032..0ec602cf31 100644
--- a/target/linux/ipq807x/files/arch/arm64/boot/dts/qcom/ipq8074-nbg7815.dts
+++ b/target/linux/ipq807x/files/arch/arm64/boot/dts/qcom/ipq8074-nbg7815.dts
@@ -39,6 +39,22 @@
 			gpios = <&tlmm 54 GPIO_ACTIVE_LOW>;
 		};
 	};
+
+	fan: gpio_fan {
+		compatible = "gpio-fan";
+		gpios = <&tlmm 21 GPIO_ACTIVE_HIGH>;
+		gpio-fan,speed-map = <0    0
+							4500 1>;
+		#cooling-cells = <2>;
+	};
+
+	thermal-zones {
+		aqr_thermal: aqr-thermal {
+			polling-delay-passive = <1000>;
+			polling-delay = <1000>;
+			thermal-sensors = <&aqr113c>;
+		};
+	};
 };
 
 &tlmm {
@@ -291,6 +307,7 @@
 		compatible = "ethernet-phy-ieee802.3-c45";
 		reg = <8>;
 		reset-gpios = <&tlmm 63 GPIO_ACTIVE_LOW>;
+		#thermal-sensor-cells = <0>;
 	};
 };
 
@@ -443,3 +460,105 @@
 
 	qcom,ath11k-calibration-variant = "Zyxel-NBG7815";
 };
+
+&cpu0_thermal {
+	trips {
+		cpu0_active: cpu0-active {
+			temperature = <70000>;
+			hysteresis = <5000>;
+			type = "active";
+		};
+	};
+
+	cooling-maps {
+		map1 {
+			trip = <&cpu0_active>;
+			cooling-device = <&fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+		};
+	};
+};
+
+&cpu1_thermal {
+	trips {
+		cpu1_active: cpu1-active {
+			temperature = <70000>;
+			hysteresis = <5000>;
+			type = "active";
+		};
+	};
+
+	cooling-maps {
+		map1 {
+			trip = <&cpu1_active>;
+			cooling-device = <&fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+		};
+	};
+};
+
+&cpu2_thermal {
+	trips {
+		cpu2_active: cpu2-active {
+			temperature = <70000>;
+			hysteresis = <5000>;
+			type = "active";
+		};
+	};
+
+	cooling-maps {
+		map1 {
+			trip = <&cpu2_active>;
+			cooling-device = <&fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+		};
+	};
+};
+
+&cpu3_thermal {
+	trips {
+		cpu3_active: cpu3-active {
+			temperature = <70000>;
+			hysteresis = <5000>;
+			type = "active";
+		};
+	};
+
+	cooling-maps {
+		map1 {
+			trip = <&cpu3_active>;
+			cooling-device = <&fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+		};
+	};
+};
+
+&cluster_thermal {
+	trips {
+		cluster_active: cluster-active {
+			temperature = <70000>;
+			hysteresis = <5000>;
+			type = "active";
+		};
+	};
+
+	cooling-maps {
+		map1 {
+			trip = <&cluster_active>;
+			cooling-device = <&fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+		};
+	};
+};
+
+&aqr_thermal {
+	trips {
+		aqr_thermal_active: aqr-thermal-active {
+			temperature = <70000>;
+			hysteresis = <5000>;
+			type = "active";
+		};
+	};
+
+	cooling-maps {
+		map1 {
+			trip = <&aqr_thermal_active>;
+			cooling-device = <&fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+		};
+	};
+};
diff --git a/target/linux/ipq807x/image/generic.mk b/target/linux/ipq807x/image/generic.mk
index 38770a5f24..bbdb8c5d8b 100644
--- a/target/linux/ipq807x/image/generic.mk
+++ b/target/linux/ipq807x/image/generic.mk
@@ -141,6 +141,6 @@ define Device/zyxel_nbg7815
 	IMAGES += factory.bin sysupgrade.bin
 	IMAGE/factory.bin := append-rootfs | pad-rootfs | pad-to 64k
 	IMAGE/sysupgrade.bin/squashfs := append-rootfs | pad-to 64k | sysupgrade-tar rootfs=$$$$@ | append-metadata
-	DEVICE_PACKAGES := ipq-wifi-zyxel_nbg7815 kmod-ath11k-pci e2fsprogs kmod-fs-ext4 losetup kmod-hwmon-tmp103
+	DEVICE_PACKAGES := ipq-wifi-zyxel_nbg7815 kmod-ath11k-pci e2fsprogs kmod-fs-ext4 losetup kmod-hwmon-tmp103 kmod-hwmon-gpiofan kmod-phy-aquantia
 endef
 TARGET_DEVICES += zyxel_nbg7815
-- 
2.39.2