[PATCH v4 3/3] arm64: dts: broadcom: rpi-5: Add RP1 PWM node

[Andrea della Porta]

From: Stanimir Varbanov <svarbanov@xxxxxxx>

The RP1 chipset used on the Raspberry Pi 5 features an integrated
PWM controller to drive the cooling fan.

Add the corresponding DT node for this PWM controller.

Signed-off-by: Stanimir Varbanov <svarbanov@xxxxxxx>
Co-developed-by: Andrea della Porta <andrea.porta@xxxxxxxx>
Signed-off-by: Andrea della Porta <andrea.porta@xxxxxxxx>
---
 arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts | 12 ++++++++++++
 arch/arm64/boot/dts/broadcom/rp1-common.dtsi     |  9 +++++++++
 2 files changed, 21 insertions(+)

diff --git a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
index 0fc57e72632ed..748be8f1ee9e2 100644
--- a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
+++ b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
@@ -64,6 +64,12 @@ phy1: ethernet-phy@1 {
 };
 
 &rp1_gpio {
+	fan_pwm_default_state: fan-pwm-default-state {
+		function = "pwm1";
+		pins = "gpio45";
+		bias-pull-down;
+	};
+
 	usb_vbus_default_state: usb-vbus-default-state {
 		function = "vbus1";
 		groups = "vbus1";
@@ -94,6 +100,12 @@ &rp1_i2c6 {
 	pinctrl-names = "default";
 };
 
+&rp1_pwm1 {
+	pinctrl-0 = <&fan_pwm_default_state>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
 &rp1_usb0 {
 	pinctrl-0 = <&usb_vbus_default_state>;
 	pinctrl-names = "default";
diff --git a/arch/arm64/boot/dts/broadcom/rp1-common.dtsi b/arch/arm64/boot/dts/broadcom/rp1-common.dtsi
index 16f5359395835..df4c2d09c8d34 100644
--- a/arch/arm64/boot/dts/broadcom/rp1-common.dtsi
+++ b/arch/arm64/boot/dts/broadcom/rp1-common.dtsi
@@ -99,7 +99,16 @@ rp1_i2c6: i2c@40088000 {
 		clocks = <&rp1_clocks RP1_CLK_SYS>;
 		i2c-scl-rising-time-ns = <65>;
 		i2c-scl-falling-time-ns = <100>;
+		status = "disabled";
+	};
 
+	rp1_pwm1: pwm@4009c000 {
+		compatible = "raspberrypi,rp1-pwm";
+		reg = <0x00 0x4009c000  0x0 0x100>;
+		clocks = <&rp1_clocks RP1_CLK_PWM1>;
+		assigned-clocks = <&rp1_clocks RP1_CLK_PWM1>;
+		assigned-clock-rates = <50000000>;
+		#pwm-cells = <3>;
 		status = "disabled";
 	};
 
-- 
2.35.3