[PATCH V9 24/24] arm64: dts: allwinner: rg35xx: Enable LCD output

[Chris Morgan]

From: Chris Morgan <macromor...@hotmail.com>

The RG35XX has a 640x480 RGB/SPI LCD panel, supported by the SoC display
pipeline and an NV3052C controller. The H616 SOC's GPIO bank D contains
the muxed display pins for RGB and LVDS output support.

Enable the display engine and LCD timing controller, configure the
panel, and add a fixed 3.3v GPIO-controlled regulator for the panel, and
a VCC supply for the display pins as per the other GPIO banks.

Signed-off-by: Ryan Walklin <r...@testtoast.com>
Signed-off-by: Chris Morgan <macromor...@hotmail.com>
---
 .../sun50i-h700-anbernic-rg35xx-2024.dts      | 59 +++++++++++++++++++
 1 file changed, 59 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts 
b/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts
index 95f2ae04bd95..260c2d55a86e 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts
@@ -187,6 +187,49 @@ reg_vcc5v: regulator-vcc5v { /* USB-C power input */
                regulator-min-microvolt = <5000000>;
                regulator-max-microvolt = <5000000>;
        };
+
+       reg_lcd: regulator-gpio-lcd-vdd {
+               compatible = "regulator-fixed";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-name = "vdd-lcd";
+               gpio = <&pio 8 15 GPIO_ACTIVE_HIGH>; // PI15
+               enable-active-high;
+       };
+
+       spi_lcd: spi {
+               compatible = "spi-gpio";
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               sck-gpios = <&pio 8 9 GPIO_ACTIVE_HIGH>; // PI9
+               mosi-gpios = <&pio 8 10 GPIO_ACTIVE_HIGH>; // PI10
+               cs-gpios = <&pio 8 8 GPIO_ACTIVE_HIGH>; // PI8
+               num-chipselects = <1>;
+
+               panel: panel@0 {
+                       compatible = "anbernic,rg35xx-plus-panel";
+
+                       reg = <0>;
+
+                       spi-max-frequency = <3125000>;
+                       spi-3wire;
+
+                       reset-gpios = <&pio 8 14 GPIO_ACTIVE_LOW>; // PI14
+
+                       backlight = <&backlight>;
+                       power-supply = <&reg_lcd>;
+
+                       pinctrl-0 = <&lcd0_rgb888_pins>;
+                       pinctrl-names = "default";
+
+                       port {
+                               panel_in_rgb: endpoint {
+                                       remote-endpoint = <&tcon_lcd0_out_lcd>;
+                               };
+                       };
+               };
+       };
 };
 
 &codec {
@@ -199,6 +242,10 @@ &cpu0 {
        cpu-supply = <&reg_dcdc1>;
 };
 
+&de {
+       status = "okay";
+};
+
 &ehci0 {
        status = "okay";
 };
@@ -218,6 +265,7 @@ &ohci0 {
 &pio {
        vcc-pa-supply = <&reg_cldo3>;
        vcc-pc-supply = <&reg_cldo3>;
+       vcc-pd-supply = <&reg_cldo3>;
        vcc-pe-supply = <&reg_cldo3>;
        vcc-pf-supply = <&reg_cldo3>;
        vcc-pg-supply = <&reg_aldo4>;
@@ -377,3 +425,14 @@ &usbotg {
 &usbphy {
        status = "okay";
 };
+
+&tcon_lcd0 {
+       status = "okay";
+};
+
+&tcon_lcd0_out {
+       tcon_lcd0_out_lcd: endpoint@1 {
+               reg = <1>;
+               remote-endpoint = <&panel_in_rgb>;
+       };
+};
-- 
2.43.0