linux-kernel - [PATCH 2/4] dt-bindings: Add ANX6345 DP/eDP transmitter binding

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Message-Id: <20190514160230.CD70468BFE@newverein.lst.de>
Date:   Tue, 14 May 2019 18:02:30 +0200 (CEST)
From:   Torsten Duwe <duwe@....de>
To:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Thierry Reding <thierry.reding@...il.com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Archit Taneja <architt@...eaurora.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Icenowy Zheng <icenowy@...c.io>,
        Sean Paul <seanpaul@...omium.org>,
        Vasily Khoruzhick <anarsoul@...il.com>,
        Harald Geyer <harald@...ib.org>
Cc:     dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/4] dt-bindings: Add ANX6345 DP/eDP transmitter binding

From: Icenowy Zheng <icenowy@...c.io>

The ANX6345 is an ultra-low power DisplayPort/eDP transmitter designed
for portable devices.

Add a binding document for it.

Signed-off-by: Icenowy Zheng <icenowy@...c.io>
Signed-off-by: Vasily Khoruzhick <anarsoul@...il.com>
Reviewed-by: Rob Herring <robh@...nel.org>
Signed-off-by: Torsten Duwe <duwe@...e.de>
---

originally: patchwork.kernel.org/patch/10814177

All I did is change the reset polarity, which is evidently active low;
according to the (terse) datasheet. It matches the polarity in the last
patch.

---
 .../bindings/display/bridge/anx6345.txt       | 56 +++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/anx6345.txt

diff --git a/Documentation/devicetree/bindings/display/bridge/anx6345.txt b/Documentation/devicetree/bindings/display/bridge/anx6345.txt
new file mode 100644
index 000000000000..e79a11348d11
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/anx6345.txt
@@ -0,0 +1,56 @@
+Analogix ANX6345 eDP Transmitter
+--------------------------------
+
+The ANX6345 is an ultra-low power Full-HD eDP transmitter designed for
+portable devices.
+
+Required properties:
+
+ - compatible		: "analogix,anx6345"
+ - reg			: I2C address of the device
+ - reset-gpios		: Which GPIO to use for reset
+
+Optional properties:
+
+ - dvdd12-supply	: Regulator for 1.2V digital core power.
+ - dvdd25-supply	: Regulator for 2.5V digital core power.
+ - Video ports for RGB input and eDP output using the DT bindings
+   defined in [1]
+
+[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
+
+Example:
+
+anx6345: anx6345@38 {
+	compatible = "analogix,anx6345";
+	reg = <0x38>;
+	reset-gpios = <&pio 3 24 GPIO_ACTIVE_LOW>; /* PD24 */
+	dvdd25-supply = <&reg_dldo2>;
+	dvdd12-supply = <&reg_fldo1>;
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		anx6345_in: port@0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0>;
+			anx6345_in_tcon0: endpoint@0 {
+				reg = <0>;
+				remote-endpoint = <&tcon0_out_anx6345>;
+			};
+		};
+
+		anx6345_out: port@1 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <1>;
+
+			anx6345_out_panel: endpoint@0 {
+				reg = <0>;
+				remote-endpoint = <&panel_in_edp>;
+			};
+		};
+	};
+};