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From:   Jagan Teki <jagan@amarulasolutions.com>
To:     Maxime Ripard <maxime.ripard@bootlin.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>, Chen-Yu Tsai <wens@csie.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>
Cc:     linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-clk@vger.kernel.org, dri-devel@lists.freedesktop.org,
        devicetree@vger.kernel.org,
        Michael Trimarchi <michael@amarulasolutions.com>,
        linux-amarula@amarulasolutions.com, linux-sunxi@googlegroups.com,
        Jagan Teki <jagan@amarulasolutions.com>
Subject: [PATCH v6 22/22] arm64: dts: allwinner: a64-amarula-relic: Add Techstar TS8550B MIPI-DSI panel
Date:   Fri, 25 Jan 2019 01:29:00 +0530
Message-Id: <20190124195900.22620-23-jagan@amarulasolutions.com>
In-Reply-To: <20190124195900.22620-1-jagan@amarulasolutions.com>
References: <20190124195900.22620-1-jagan@amarulasolutions.com>
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Sender: linux-kernel-owner@vger.kernel.org
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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,
- DLDO2 as VCC supply
- DLDO2 as IOVCC supply
- DLDO1 as VCC-DSI supply
- PD24 gpio for reset pin
- PD23 gpio for backlight enable pin

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
 .../allwinner/sun50i-a64-amarula-relic.dts    | 39 +++++++++++++++++++
 1 file changed, 39 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 f180c841ac3c..703055f2a4fb 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";
 	};
@@ -83,6 +92,30 @@
 	};
 };
 
+&de {
+	status = "okay";
+};
+
+&dphy {
+	status = "okay";
+};
+
+&dsi {
+	vcc-dsi-supply = <&reg_dldo1>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	panel@0 {
+		compatible = "techstar,ts8550b", "sitronix,st7701";
+		reg = <0>;
+		VCC-supply = <&reg_dldo2>;
+		IOVCC-supply = <&reg_dldo2>;
+		reset-gpios = <&pio 3 24 GPIO_ACTIVE_HIGH>; /* LCD-RST: PD24 */
+		backlight = <&backlight>;
+	};
+};
+
 &ehci0 {
 	status = "okay";
 };
@@ -160,6 +193,12 @@
 	status = "okay";
 };
 
+&pwm {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm_pin>;
+	status = "okay";
+};
+
 &r_rsb {
 	status = "okay";
 
-- 
2.18.0.321.gffc6fa0e3