[PATCH 1/4] arm64: dt: imx8mq: support pwm polarity inversion

[Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>]

From: Markus Niebel <Markus.Niebel@xxxxxxxxxxxxxxx>

The i.MX8MQ has the same PWM IP as i.MX6 / i.MX7. This IP and the driver
supporting pwm polarity inversion. Switch CPU device tree fragment to
use 3 pwm-cells and correct board device trees.

Signed-off-by: Markus Niebel <Markus.Niebel@xxxxxxxxxxxxxxx>
Signed-off-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>
---
 arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts | 2 +-
 arch/arm64/boot/dts/freescale/imx8mq-mnt-reform2.dts    | 2 +-
 arch/arm64/boot/dts/freescale/imx8mq.dtsi               | 8 ++++----
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
index 622f3787a186..b86f188a440d 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
@@ -18,7 +18,7 @@ / {
 	backlight_dsi: backlight-dsi {
 		compatible = "pwm-backlight";
 		/* 200 Hz for the PAM2841 */
-		pwms = <&pwm1 0 5000000>;
+		pwms = <&pwm1 0 5000000 0>;
 		brightness-levels = <0 100>;
 		num-interpolated-steps = <100>;
 		/* Default brightness level (index into the array defined by */
diff --git a/arch/arm64/boot/dts/freescale/imx8mq-mnt-reform2.dts b/arch/arm64/boot/dts/freescale/imx8mq-mnt-reform2.dts
index 94a13cb500e6..8956a46788fa 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-mnt-reform2.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-mnt-reform2.dts
@@ -18,7 +18,7 @@ backlight: backlight {
 		compatible = "pwm-backlight";
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_backlight>;
-		pwms = <&pwm2 0 10000>;
+		pwms = <&pwm2 0 10000 0>;
 		power-supply = <&reg_main_usb>;
 		enable-gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>;
 		brightness-levels = <0 32 64 128 160 200 255>;
diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
index 1eca2b431467..49eadb081b19 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
@@ -798,7 +798,7 @@ pwm1: pwm@30660000 {
 				clocks = <&clk IMX8MQ_CLK_PWM1_ROOT>,
 				         <&clk IMX8MQ_CLK_PWM1_ROOT>;
 				clock-names = "ipg", "per";
-				#pwm-cells = <2>;
+				#pwm-cells = <3>;
 				status = "disabled";
 			};
 
@@ -809,7 +809,7 @@ pwm2: pwm@30670000 {
 				clocks = <&clk IMX8MQ_CLK_PWM2_ROOT>,
 				         <&clk IMX8MQ_CLK_PWM2_ROOT>;
 				clock-names = "ipg", "per";
-				#pwm-cells = <2>;
+				#pwm-cells = <3>;
 				status = "disabled";
 			};
 
@@ -820,7 +820,7 @@ pwm3: pwm@30680000 {
 				clocks = <&clk IMX8MQ_CLK_PWM3_ROOT>,
 				         <&clk IMX8MQ_CLK_PWM3_ROOT>;
 				clock-names = "ipg", "per";
-				#pwm-cells = <2>;
+				#pwm-cells = <3>;
 				status = "disabled";
 			};
 
@@ -831,7 +831,7 @@ pwm4: pwm@30690000 {
 				clocks = <&clk IMX8MQ_CLK_PWM4_ROOT>,
 				         <&clk IMX8MQ_CLK_PWM4_ROOT>;
 				clock-names = "ipg", "per";
-				#pwm-cells = <2>;
+				#pwm-cells = <3>;
 				status = "disabled";
 			};
 
-- 
2.25.1