linux-kernel - [PATCH RFC] ARM: dts: samsung: add rga-lvds panel in itop elite

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Message-Id: <1472511002-9019-1-git-send-email-ayaka@soulik.info>
Date:   Tue, 30 Aug 2016 06:50:02 +0800
From:   Randy Li <ayaka@...lik.info>
To:     devicetree@...r.kernel.org
Cc:     mark.rutland@....com, linux@...linux.org.uk, kgene@...nel.org,
        krzk@...nel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
        inki.dae@...sung.com, jy0922.shim@...sung.com,
        kyungmin.park@...sung.com, dri-devel@...ts.freedesktop.org,
        Randy Li <ayaka@...lik.info>
Subject: [PATCH RFC] ARM: dts: samsung: add rga-lvds panel in itop elite

It is actually a lvds panel connected through a rga-lvds bridge.
But I really have no idea about what does a port mean in fimd node.

Also how should I configure this panel size? I think the i2c found
on the panel schematic, but it more likely to be used a touch screen
touth. Also the touch screen is not supported in currently driver.

Signed-off-by: Randy Li <ayaka@...lik.info>
---
 arch/arm/boot/dts/exynos4412-itop-elite.dts | 35 ++++++++++++++++++++++++++---
 1 file changed, 32 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/exynos4412-itop-elite.dts b/arch/arm/boot/dts/exynos4412-itop-elite.dts
index e1cda54..2d67385 100644
--- a/arch/arm/boot/dts/exynos4412-itop-elite.dts
+++ b/arch/arm/boot/dts/exynos4412-itop-elite.dts
@@ -139,6 +139,20 @@
 		assigned-clocks = <&clock CLK_MOUT_CAM0>;
 		assigned-clock-parents = <&clock CLK_XUSBXTI>;
 	};
+	
+	vcc_sys_lcd: sys-lcd {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_5v";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gpl0 4 GPIO_ACTIVE_HIGH>;
+	};
+
+	panel: panel {
+		ddc-i2c-bus = <&i2c_3>;
+		power-supply = <&vcc_sys_lcd>;
+		enable-gpios = <&gpl0 2 GPIO_ACTIVE_HIGH>;
+	};
 };
 
 &pinctrl_1 {
@@ -221,9 +235,6 @@
 };
 
 &pwm {
-	pinctrl-0 = <&pwm1_out>;
-	pinctrl-names = "default";
-	samsung,pwm-outputs = <1>;
 	status = "okay";
 };
 
@@ -239,3 +250,21 @@
 	assigned-clock-parents = <&clock CLK_MOUT_MPLL_USER_T>;
 	assigned-clock-rates = <0>, <176000000>;
 };
+
+&i2c_3 {
+	status = "okay";
+};
+
+&fimd {
+	pinctrl-0 = <&lcd_clk &lcd_data24 &pwm1_out>;
+	pinctrl-names = "default";
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	port@0 {
+		reg = <0>;
+		rga_lvds: endpoint {
+			remote-endpoint = <&panel>;
+		};
+	};
+};
-- 
2.7.4