Re: [PATCH] arm64: dts: ti: am62-phyboard-lyra: Add overlay to enable a GPIO fan

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On 2/7/24 11:28 AM, Nathan Morrisson wrote:
The phyBOARD-Lyra has a GPIO fan header. This overlay enables the fan
header and sets the fan to turn on at 65C.

Signed-off-by: Nathan Morrisson <nmorrisson@xxxxxxxxxx>
---
  arch/arm64/boot/dts/ti/Makefile               |  1 +
  .../ti/k3-am62-phyboard-lyra-gpio-fan.dtso    | 51 +++++++++++++++++++
  2 files changed, 52 insertions(+)
  create mode 100644 arch/arm64/boot/dts/ti/k3-am62-phyboard-lyra-gpio-fan.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 52c1dc910308..379fb4f31a1f 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -23,6 +23,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dev.dtb
  dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-mallow.dtb
  dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-yavia.dtb
  dtb-$(CONFIG_ARCH_K3) += k3-am62-lp-sk.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-am62-phyboard-lyra-gpio-fan.dtbo

Why not call this k3-am625-phyboard-lyra-gpio-fan.dtbo to match the
name of the base board it applies to better?

Andrew

# Boards with AM62Ax SoC
  dtb-$(CONFIG_ARCH_K3) += k3-am62a7-sk.dtb
diff --git a/arch/arm64/boot/dts/ti/k3-am62-phyboard-lyra-gpio-fan.dtso b/arch/arm64/boot/dts/ti/k3-am62-phyboard-lyra-gpio-fan.dtso
new file mode 100644
index 000000000000..9c05748bdd9d
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am62-phyboard-lyra-gpio-fan.dtso
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (C) 2024 PHYTEC America LLC
+ * Author: Garrett Giordano <ggiordano@xxxxxxxxxx>
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/thermal/thermal.h>
+#include "k3-pinctrl.h"
+
+&{/} {
+	fan: gpio-fan {
+		compatible = "gpio-fan";
+		gpio-fan,speed-map = <0 0 8600 1>;
+		gpios = <&main_gpio0 40 GPIO_ACTIVE_LOW>;
+		#cooling-cells = <2>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&gpio_fan_pins_default>;
+		status = "okay";
+	};
+};
+
+&main_pmx0 {
+	gpio_fan_pins_default: gpio-fan-default-pins {
+		pinctrl-single,pins = <
+			AM62X_IOPAD(0x0a4, PIN_OUTPUT, 7) /* (M22) GPMC0_DIR.GPIO0_40 */
+		>;
+	};
+};
+
+&thermal_zones {
+	main0_thermal: main0-thermal {
+		trips {
+			main0_thermal_trip0: main0-thermal-trip {
+				temperature = <65000>;  /* millicelsius */
+				hysteresis = <2000>;    /* millicelsius */
+				type = "active";
+			};
+		};
+
+		cooling-maps {
+			map0 {
+				trip = <&main0_thermal_trip0>;
+				cooling-device = <&fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+			};
+		};
+	};
+};




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