[PATCH v4 26/26] arm64: dts: allwinner: a64-amarula-relic: Enable Techstar TS8550B MIPI-DSI panel

[Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx>]

Amarula A64-Relic board by default bound with Techstar TS8550B
MIPI-DSI panel, add support for it.

DSI panel connected via board DSI port with,
- DC1SW as AVDD supply
- DCDC2 as DVDD supply
- DCDC1 as VCC-DSI supply
- PD24 gpio for reset pin
- PD23 gpio for backlight enable pin

Signed-off-by: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx>
---
 .../allwinner/sun50i-a64-amarula-relic.dts    | 46 +++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
index 6cb2b7f0c817..ecc0d8094815 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
@@ -9,6 +9,7 @@
 #include "sun50i-a64.dtsi"
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pwm/pwm.h>
 
 / {
 	model = "Amarula A64-Relic";
@@ -18,6 +19,14 @@
 		serial0 = &uart0;
 	};
 
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
+		brightness-levels = <1 2 4 8 16 32 64 128 512>;
+		default-brightness-level = <2>;
+		enable-gpios = <&pio 3 23 GPIO_ACTIVE_HIGH>; /* LCD-BL-EN: PD23 */
+	};
+
 	chosen {
 		stdout-path = "serial0:115200n8";
 	};
@@ -30,6 +39,28 @@
 	};
 };
 
+&de {
+	status = "okay";
+};
+
+&dphy {
+	status = "okay";
+};
+
+&dsi {
+	vcc-dsi-supply = <&reg_dldo1>;
+	status = "okay";
+
+	panel@0 {
+		compatible = "techstar,ts8550b";
+		reg = <0>;
+		avdd-supply = <&reg_dc1sw>;
+		dvdd-supply = <&reg_dldo2>;
+		reset-gpios = <&pio 3 24 GPIO_ACTIVE_HIGH>; /* LCD-RST: PD24 */
+		backlight = <&backlight>;
+	};
+};
+
 &ehci0 {
 	status = "okay";
 };
@@ -72,6 +103,12 @@
 	status = "okay";
 };
 
+&pwm {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm_pin>;
+	status = "okay";
+};
+
 &r_rsb {
 	status = "okay";
 
@@ -107,6 +144,15 @@
 	regulator-name = "vcc-pll-avcc";
 };
 
+&reg_dc1sw {
+	/*
+	 * This regulator also indirectly drives the PD pingroup GPIOs,
+	 * which also controls the power LED.
+	 */
+	regulator-always-on;
+	regulator-name = "vcc-phy";
+};
+
 &reg_dcdc1 {
 	regulator-always-on;
 	regulator-min-microvolt = <3300000>;
-- 
2.18.0.321.gffc6fa0e3