[PATCH v3] arm64: dts: ti: am62-phyboard-lyra: Add overlay to enable a GPIO fan

[PATCH v3] arm64: dts: ti: am62-phyboard-lyra: Add overlay to enable a GPIO fan

[Nathan Morrisson]

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>
---
v3:
- Remove fan status okay

v2:
- Change overlay name from k3-am62-... to k3-am62x-...
- Add compile time test

 arch/arm64/boot/dts/ti/Makefile               |  3 ++
 .../ti/k3-am62x-phyboard-lyra-gpio-fan.dtso   | 50 +++++++++++++++++++
 2 files changed, 53 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-am62x-phyboard-lyra-gpio-fan.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 52c1dc910308..bfeb496d5039 100644
--- 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
@@ -87,6 +88,8 @@ 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
index 000000000000..f0b2fd4165a7
--- /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>;
+			};
+		};
+	};
+};
-- 
2.25.1

Re: [PATCH v3] arm64: dts: ti: am62-phyboard-lyra: Add overlay to enable a GPIO fan

[Vignesh Raghavendra]

Hi Nathan Morrisson,

On Mon, 12 Feb 2024 16:52:48 -0800, 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.
> 
> 

I have applied the following to branch ti-k3-dts-next on [1].
Thank you!

[1/1] arm64: dts: ti: am62-phyboard-lyra: Add overlay to enable a GPIO fan
      commit: 192a0c70ef164b7b00a9d0126d961f10318e058a

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent up the chain during
the next merge window (or sooner if it is a relevant bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/ti/linux.git
--
Vignesh