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dtoverlays: Fix up ili9881 DSI panel overlays for upstream changes

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The regulator compatible string changed, and implements the PWM
API instead of the backlight one, therefore requiring pwm-backlight
to sit inbetween.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
This commit is contained in:
Dave Stevenson
2025-10-22 18:00:21 +01:00
committed by Phil Elwell
parent b943f9f7d4
commit adc3806f98
1 changed files with 13 additions and 3 deletions
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16
arch/arm/boot/dts/overlays/vc4-kms-dsi-ili9881-7inch-overlay.dts
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@@ -19,10 +19,11 @@
display_mcu: display_mcu@45
{
compatible = "raspberrypi,v2-touchscreen-panel-regulator";
compatible = "raspberrypi,touchscreen-panel-regulator-v2";
reg = <0x45>;
gpio-controller;
#gpio-cells = <2>;
#pwm-cells = <3>;
};
gt911: gt911@5d {
@@ -54,7 +55,7 @@
reg = <0>;
compatible = "raspberrypi,dsi-7inch";
reset-gpio = <&display_mcu 0 GPIO_ACTIVE_LOW>;
backlight = <&display_mcu>;
backlight = <&backlight>;
port {
panel_in: endpoint {
@@ -90,6 +91,14 @@
startup-delay-us = <50000>;
enable-active-high;
};
backlight: panel_backlight@1 {
compatible = "pwm-backlight";
brightness-levels = <0 31>;
num-interpolated-steps = <31>;
default-brightness-level = <15>;
pwms = <&display_mcu 0 200000 0>;
};
};
};
@@ -111,7 +120,8 @@
dsi0 = <&dsi_frag>, "target:0=",<&dsi0>,
<&i2c_frag>, "target:0=",<&i2c_csi_dsi0>,
<&touch_reg>, "reg:0=0",
<&touch_reg>, "regulator-name=touch_reg_0";
<&touch_reg>, "regulator-name=touch_reg_0",
<&backlight>, "reg:0=0";
sizex = <&gt911>,"touchscreen-size-x:0";
sizey = <&gt911>,"touchscreen-size-y:0";
invx = <0>, "+10";