linux-kernel - [PATCH v3 3/6] dt-bindings: add binding for Sitronix ST7586 display panels

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Message-Id: <1501799630-1650-4-git-send-email-david@lechnology.com>
Date:   Thu,  3 Aug 2017 17:33:47 -0500
From:   David Lechner <david@...hnology.com>
To:     dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org
Cc:     David Lechner <david@...hnology.com>,
        Noralf Trønnes <noralf@...nnes.org>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Sekhar Nori <nsekhar@...com>,
        Kevin Hilman <khilman@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 3/6] dt-bindings: add binding for Sitronix ST7586 display panels

This adds a new binding for Sitronix ST7586 display panels.

Using lego as the vendor prefix in the compatible string because the display
panel I am working with is an integral part of the LEGO MINDSTORMS EV3.

Signed-off-by: David Lechner <david@...hnology.com>
---
 .../bindings/display/sitronix,st7586.txt           | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/sitronix,st7586.txt

diff --git a/Documentation/devicetree/bindings/display/sitronix,st7586.txt b/Documentation/devicetree/bindings/display/sitronix,st7586.txt
new file mode 100644
index 0000000..dfb0b7b
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/sitronix,st7586.txt
@@ -0,0 +1,26 @@
+Sitronix ST7586 display panel
+
+Required properties:
+- compatible:	"lego,ev3-lcd".
+
+The node for this driver must be a child node of a SPI controller, hence
+all mandatory properties described in ../spi/spi-bus.txt must be specified.
+
+Optional properties:
+- dc-gpios:	D/C pin. The presence/absence of this GPIO determines
+		the panel interface operation mode (IF[3:1] pins):
+		- present: IF=011 4-wire 8-bit data serial interface
+		- absent:  IF=010 3-wire 9-bit data serial interface
+- reset-gpios:	Reset pin
+- power-supply:	A regulator node for the supply voltage.
+- backlight:	phandle of the backlight device attached to the panel
+- rotation:	panel rotation in degrees counter clockwise (0,90,180,270)
+
+Example:
+	display@0{
+		compatible = "lego,ev3-lcd";
+		reg = <0>;
+		spi-max-frequency = <10000000>;
+		dc-gpios = <&gpio 43 GPIO_ACTIVE_HIGH>;
+		reset-gpios = <&gpio 80 GPIO_ACTIVE_HIGH>;
+	};
-- 
2.7.4