linux-kernel - [PATCH 5/5] arm64: dts: allwinner: a64-amarula-relic: Add OV5640 camera node

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Date:   Mon,  3 Dec 2018 15:37:47 +0530
From:   Jagan Teki <jagan@...rulasolutions.com>
To:     Yong Deng <yong.deng@...ewell.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Chen-Yu Tsai <wens@...e.org>, linux-media@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Jagan Teki <jagan@...rulasolutions.com>
Subject: [PATCH 5/5] arm64: dts: allwinner: a64-amarula-relic: Add OV5640 camera node

Amarula A64-Relic board by default bound with OV5640 camera,
so add support for it with below pin information.

- PE13, PE12 via i2c-gpio bitbanging
- CLK_CSI_MCLK as external clock
- PE1 as external clock pin muxing
- DLDO3 as vcc-csi supply
- DLDO3 as AVDD supply
- ALDO1 as DOVDD supply
- ELDO3 as DVDD supply
- PE14 gpio for reset pin
- PE15 gpio for powerdown pin

Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
---
 .../allwinner/sun50i-a64-amarula-relic.dts    | 54 +++++++++++++++++++
 arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi |  5 ++
 2 files changed, 59 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
index 6cb2b7f0c817..9ac6d773188b 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
@@ -22,6 +22,41 @@
 		stdout-path = "serial0:115200n8";
 	};
 
+	i2c-csi {
+		compatible = "i2c-gpio";
+		sda-gpios = <&pio 4 13 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&pio 4 12 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+		i2c-gpio,delay-us = <5>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ov5640: camera@3c {
+			compatible = "ovti,ov5640";
+			reg = <0x3c>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&csi_mclk_pin>;
+			clocks = <&ccu CLK_CSI_MCLK>;
+			clock-names = "xclk";
+
+			AVDD-supply = <&reg_dldo3>;
+			DOVDD-supply = <&reg_aldo1>;
+			DVDD-supply = <&reg_eldo3>;
+			reset-gpios = <&pio 4 14 GPIO_ACTIVE_LOW>; /* CSI-RST-R: PE14 */
+			powerdown-gpios = <&pio 4 15 GPIO_ACTIVE_HIGH>; /* CSI-STBY-R: PE15 */
+
+			port {
+				ov5640_ep: endpoint {
+					remote-endpoint = <&csi_ep>;
+					bus-width = <8>;
+					hsync-active = <1>; /* Active high */
+					vsync-active = <0>; /* Active low */
+					data-active = <1>;  /* Active high */
+					pclk-sample = <1>;  /* Rising */
+				};
+			};
+		};
+	};
+
 	wifi_pwrseq: wifi-pwrseq {
 		compatible = "mmc-pwrseq-simple";
 		clocks = <&rtc 1>;
@@ -30,6 +65,25 @@
 	};
 };
 
+&csi {
+	vcc-csi-supply = <&reg_dldo3>;
+	status = "okay";
+
+	port {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		csi_ep: endpoint {
+			remote-endpoint = <&ov5640_ep>;
+			bus-width = <8>;
+			hsync-active = <1>; /* Active high */
+			vsync-active = <0>; /* Active low */
+			data-active = <1>;  /* Active high */
+			pclk-sample = <1>;  /* Rising */
+		};
+	};
+};
+
 &ehci0 {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index d32ff694ac5c..844bb44a78af 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -538,6 +538,11 @@
 				function = "csi0";
 			};
 
+			csi_mclk_pin: csi-mclk {
+				pins = "PE1";
+				function = "csi0";
+			};
+
 			i2c0_pins: i2c0_pins {
 				pins = "PH0", "PH1";
 				function = "i2c0";
-- 
2.18.0.321.gffc6fa0e3