[PATCH 1/2] arm64: dts: imx93-11x11-evk: Add PWM backlight for "LVDS" connector
Liu Ying
victor.liu at nxp.com
Mon Aug 26 23:47:16 PDT 2024
J702 on i.MX93 11x11 EVK base board is a 40-pin connector labelled
"LVDS". This connector supports PWM backlight with default 12V power
supply and ADP5585 PWM controller. Add support for the backlight.
Signed-off-by: Liu Ying <victor.liu at nxp.com>
---
This patch is based on next-20240826.
.../boot/dts/freescale/imx93-11x11-evk.dts | 30 +++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts b/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
index 60eb64761392..8d036b3962e9 100644
--- a/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
@@ -62,6 +62,15 @@ vdevbuffer: vdevbuffer at a4020000 {
};
+ reg_vdd_12v: regulator-vdd-12v {
+ compatible = "regulator-fixed";
+ regulator-name = "VDD_12V";
+ regulator-min-microvolt = <12000000>;
+ regulator-max-microvolt = <12000000>;
+ gpio = <&pcal6524 14 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+
reg_vref_1v8: regulator-adc-vref {
compatible = "regulator-fixed";
regulator-name = "vref_1v8";
@@ -81,6 +90,17 @@ reg_usdhc2_vmmc: regulator-usdhc2 {
enable-active-high;
};
+ backlight_lvds: backlight-lvds {
+ compatible = "pwm-backlight";
+ pwms = <&adp5585 0 100000 0>;
+ brightness-levels = <0 100>;
+ num-interpolated-steps = <100>;
+ default-brightness-level = <100>;
+ power-supply = <®_vdd_12v>;
+ enable-gpios = <&adp5585 9 GPIO_ACTIVE_HIGH>;
+ status = "disabled";
+ };
+
bt_sco_codec: bt-sco-codec {
compatible = "linux,bt-sco";
#sound-dai-cells = <1>;
@@ -302,6 +322,16 @@ ldo5: LDO5 {
};
};
};
+
+ adp5585: io-expander at 34 {
+ compatible = "adi,adp5585-00", "adi,adp5585";
+ reg = <0x34>;
+ vdd-supply = <&buck4>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-reserved-ranges = <5 1>;
+ #pwm-cells = <3>;
+ };
};
&lpi2c3 {
--
2.34.1
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