arm64: dts: ti: am62-phyboard-lyra: Add overlay to enable a GPIO fan

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@phytec.com>
Reviewed-by: Wadim Egorov <w.egorov@phytec.de>
Link: https://lore.kernel.org/r/20240213005248.1027842-1-nmorrisson@phytec.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 75033b6e86933359b7b3f6a1897b2788f581cbdf..d24ec2c74f519bef4d1f28256b1c9fd1a57f2095 100644 (file)
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -22,6 +22,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dahlia.dtb
 dtb-$(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-$(CONFIG_ARCH_K3) += k3-am62x-phyboard-lyra-gpio-fan.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am62-lp-sk.dtb
 
 # Boards with AM62Ax SoC
@@ -92,6 +93,8 @@ k3-am625-beagleplay-csi2-ov5640-dtbs := k3-am625-beagleplay.dtb \
        k3-am625-beagleplay-csi2-ov5640.dtbo
 k3-am625-beagleplay-csi2-tevi-ov5640-dtbs := k3-am625-beagleplay.dtb \
        k3-am625-beagleplay-csi2-tevi-ov5640.dtbo
+k3-am625-phyboard-lyra-gpio-fan-dtbs := k3-am625-phyboard-lyra-rdk.dtb \
+       k3-am62x-phyboard-lyra-gpio-fan.dtbo
 k3-am625-sk-csi2-imx219-dtbs := k3-am625-sk.dtb \
        k3-am62x-sk-csi2-imx219.dtbo
 k3-am625-sk-csi2-ov5640-dtbs := k3-am625-sk.dtb \

diff --git a/arch/arm64/boot/dts/ti/k3-am62x-phyboard-lyra-gpio-fan.dtso b/arch/arm64/boot/dts/ti/k3-am62x-phyboard-lyra-gpio-fan.dtso
new file mode 100644 (file)
index 0000000..f0b2fd4
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am62x-phyboard-lyra-gpio-fan.dtso
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (C) 2024 PHYTEC America LLC
+ * Author: Garrett Giordano <ggiordano@phytec.com>
+ */
+
+/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>;
+       };
+};
+
+&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>;
+                       };
+               };
+       };
+};