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arm64: dt: imx8mq: support pwm polarity inversion

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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@ew.tq-group.com>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Markus Niebel 2022-05-02 11:48:58 +02:00 committed by Shawn Guo
parent 22463f7cd0
commit 15ca3f00a1
3 changed files with 6 additions and 6 deletions
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2
arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
View File

@ -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 */

2
arch/arm64/boot/dts/freescale/imx8mq-mnt-reform2.dts
View File

@ -18,7 +18,7 @@
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>;

8
arch/arm64/boot/dts/freescale/imx8mq.dtsi
View File

@ -798,7 +798,7 @@
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 @@
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 @@
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 @@
clocks = <&clk IMX8MQ_CLK_PWM4_ROOT>,
<&clk IMX8MQ_CLK_PWM4_ROOT>;
clock-names = "ipg", "per";
#pwm-cells = <2>;
#pwm-cells = <3>;
status = "disabled";
};