Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Chen-Yu Tsai <wens@kernel.org>
To:     Maxime Ripard <mripard@kernel.org>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Sakari Ailus <sakari.ailus@linux.intel.com>,
        Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>
Cc:     Chen-Yu Tsai <wens@kernel.org>, linux-media@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, Chen-Yu Tsai <wens@csie.org>
Subject: [PATCH 13/14] [DO NOT MERGE] ARM: dts: sun7i: cubieboard2: Enable OV7670 camera on CSI1
Date:   Mon, 16 Dec 2019 00:59:23 +0800
Message-Id: <20191215165924.28314-14-wens@kernel.org>
In-Reply-To: <20191215165924.28314-1-wens@kernel.org>
References: <20191215165924.28314-1-wens@kernel.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

From: Chen-Yu Tsai <wens@csie.org>

The Cubieboard2 has CSI1 pins exposed on one of its GPIO headers.
Combined with I2C1 on the same header, a connected OV7670 based
camera module can be used. Power is provided via the 5V rail on
the same header. The module has onboard LDOs for the sensor's
various power rails.

Add a device node for the sensor, enable CSI1 and I2C1, and hook
everything up.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
 arch/arm/boot/dts/sun7i-a20-cubieboard2.dts | 42 +++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/arch/arm/boot/dts/sun7i-a20-cubieboard2.dts b/arch/arm/boot/dts/sun7i-a20-cubieboard2.dts
index b8203e4ef21c..0ff1593041eb 100644
--- a/arch/arm/boot/dts/sun7i-a20-cubieboard2.dts
+++ b/arch/arm/boot/dts/sun7i-a20-cubieboard2.dts
@@ -100,6 +100,25 @@ &cpu0 {
 	cpu-supply = <&reg_dcdc2>;
 };
 
+&csi1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&csi1_8bits_pg_pins>;
+	status = "okay";
+
+	port {
+		/* Parallel bus endpoint */
+		csi_from_ov7670: endpoint {
+			remote-endpoint = <&ov7670_to_csi>;
+			bus-width = <8>;
+			/* driver is broken */
+			hsync-active = <0>; /* Active high */
+			vsync-active = <1>; /* Active high */
+			data-active = <1>;  /* Active high */
+			pclk-sample = <1>;  /* Rising */
+		};
+	};
+};
+
 &de {
 	status = "okay";
 };
@@ -142,6 +161,29 @@ axp209: pmic@34 {
 
 &i2c1 {
 	status = "okay";
+
+	ov7670: camera@21 {
+		compatible = "ovti,ov7670";
+		reg = <0x21>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&csi1_clk_pg_pin>;
+		clocks = <&ccu CLK_CSI1>;
+		clock-names = "xclk";
+
+		reset-gpios = <&pio 7 14 GPIO_ACTIVE_LOW>; /* PH14 */
+		powerdown-gpios = <&pio 7 15 GPIO_ACTIVE_HIGH>; /* PH15 */
+
+		port {
+			ov7670_to_csi: endpoint {
+				remote-endpoint = <&csi_from_ov7670>;
+				bus-width = <8>;
+				hsync-active = <1>; /* Active high */
+				vsync-active = <1>; /* Active high */
+				data-active = <1>;  /* Active high */
+				pclk-sample = <1>;  /* Rising */
+			};
+		};
+	};
 };
 
 &ir0 {
-- 
2.24.0