linux-kernel - [PATCH v1 01/10] dt-bindings: media: Add Renesas CEU bindings

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Message-Id: <1510743363-25798-2-git-send-email-jacopo+renesas@jmondi.org>
Date:   Wed, 15 Nov 2017 11:55:54 +0100
From:   Jacopo Mondi <jacopo+renesas@...ndi.org>
To:     laurent.pinchart@...asonboard.com, magnus.damm@...il.com,
        geert@...der.be, mchehab@...nel.org, hverkuil@...all.nl
Cc:     Jacopo Mondi <jacopo+renesas@...ndi.org>,
        linux-renesas-soc@...r.kernel.org, linux-media@...r.kernel.org,
        linux-sh@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1 01/10] dt-bindings: media: Add Renesas CEU bindings

Add bindings documentation for Renesas Capture Engine Unit (CEU).

Signed-off-by: Jacopo Mondi <jacopo+renesas@...ndi.org>
---
 .../devicetree/bindings/media/renesas,ceu.txt      | 87 ++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/renesas,ceu.txt

diff --git a/Documentation/devicetree/bindings/media/renesas,ceu.txt b/Documentation/devicetree/bindings/media/renesas,ceu.txt
new file mode 100644
index 0000000..a88e9cb
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/renesas,ceu.txt
@@ -0,0 +1,87 @@
+Renesas Capture Engine Unit (CEU)
+----------------------------------------------
+
+The Capture Engine Unit is the image capture interface found on Renesas
+RZ chip series and on SH Mobile ones.
+
+The interface supports a single parallel input with up 8/16bits data bus width.
+
+Required properties:
+- compatible
+	Must be "renesas,renesas-ceu".
+- reg
+	Physical address base and size.
+- interrupts
+	The interrupt line number.
+- pinctrl-names, pinctrl-0
+	phandle of pin controller sub-node configuring pins for CEU operations.
+
+CEU supports a single parallel input and should contain a single 'port' subnode
+with a single 'endpoint'. Optional endpoint properties applicable to parallel
+input bus are described in "video-interfaces.txt".
+
+Example:
+
+The example describes the connection between the Capture Engine Unit and a
+OV7670 image sensor sitting on bus i2c1 with an on-board 24Mhz clock.
+
+ceu: ceu@...10000 {
+	reg = <0xe8210000 0x209c>;
+	compatible = "renesas,renesas-ceu";
+	interrupts = <GIC_SPI 332 IRQ_TYPE_LEVEL_HIGH>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&vio_pins>;
+
+	status = "okay";
+
+	port {
+		ceu_in: endpoint {
+			remote-endpoint = <&ov7670_out>;
+
+			bus-width = <8>;
+			hsync-active = <1>;
+			vsync-active = <1>;
+			pclk-sample = <1>;
+			data-active = <1>;
+		};
+	};
+};
+
+i2c1: i2c@...ee400 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
+
+	status = "okay";
+	clock-frequency = <100000>;
+
+	ov7670: camera@21 {
+		compatible = "ovti,ov7670";
+		reg = <0x21>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&vio_pins>;
+
+		reset-gpios = <&port3 11 GPIO_ACTIVE_LOW>;
+		powerdown-gpios = <&port3 12 GPIO_ACTIVE_HIGH>;
+
+		clocks = <&xclk>;
+		clock-names = "xclk";
+
+		xclk: fixed_clk {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <24000000>;
+		};
+
+		port {
+			ov7670_out: endpoint {
+				remote-endpoint = <&ceu_in>;
+
+				bus-width = <8>;
+				hsync-active = <1>;
+				vsync-active = <1>;
+				pclk-sample = <1>;
+				data-active = <1>;
+			};
+		};
+	};
-- 
2.7.4