[PATCH NOT FOR MERGE 3/3] ARM: dts: sun8i: a83t: bananapi-m3: Enable MIPI CSI-2 with OV8865

From: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
To: linux-media@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Cc: "Mauro Carvalho Chehab" <mchehab@kernel.org>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Liam Girdwood" <lgirdwood@gmail.com>,
	"Mark Brown" <broonie@kernel.org>,
	"Paul Kocialkowski" <paul.kocialkowski@bootlin.com>,
	"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
	"Hans Verkuil" <hverkuil@xs4all.nl>,
	"Sakari Ailus" <sakari.ailus@linux.intel.com>,
	"Maxime Ripard" <mripard@kernel.org>,
	kevin.lhopital@hotmail.com,
	"Kévin L'hôpital" <kevin.lhopital@bootlin.com>
Subject: [PATCH NOT FOR MERGE 3/3] ARM: dts: sun8i: a83t: bananapi-m3: Enable MIPI CSI-2 with OV8865
Date: Fri, 23 Oct 2020 19:54:06 +0200	[thread overview]
Message-ID: <20201023175406.504527-4-paul.kocialkowski@bootlin.com> (raw)
In-Reply-To: <20201023175406.504527-1-paul.kocialkowski@bootlin.com>

From: Kévin L'hôpital <kevin.lhopital@bootlin.com>

The Bananapi M3 supports a camera module which includes an OV8865 sensor
connected via the parallel CSI interface and an OV8865 sensor connected
via MIPI CSI-2.

The I2C2 bus is shared by the two sensors as well as the (active-low)
reset signal, but each sensor has it own shutdown line.

Signed-off-by: Kévin L'hôpital <kevin.lhopital@bootlin.com>
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
---
 arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts | 98 ++++++++++++++++++++
 1 file changed, 98 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts b/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts
index 9d34eabba121..70d305d47d6d 100644
--- a/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts
+++ b/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts
@@ -85,6 +85,30 @@ green {
 		};
 	};
 
+	reg_ov8865_avdd: ov8865-avdd {
+		compatible = "regulator-fixed";
+		regulator-name = "ov8865-avdd";
+		regulator-min-microvolt = <2800000>;
+		regulator-max-microvolt = <2800000>;
+		vin-supply = <&reg_dldo4>;
+	};
+
+	reg_ov8865_dovdd: ov8865-dovdd {
+		compatible = "regulator-fixed";
+		regulator-name = "ov8865-dovdd";
+		regulator-min-microvolt = <2800000>;
+		regulator-max-microvolt = <2800000>;
+		vin-supply = <&reg_dldo4>;
+	};
+
+	reg_ov8865_dvdd: ov8865-dvdd {
+		compatible = "regulator-fixed";
+		regulator-name = "ov8865-dvdd";
+		regulator-min-microvolt = <1200000>;
+		regulator-max-microvolt = <1200000>;
+		vin-supply = <&reg_eldo1>;
+	};
+
 	reg_usb1_vbus: reg-usb1-vbus {
 		compatible = "regulator-fixed";
 		regulator-name = "usb1-vbus";
@@ -115,6 +139,17 @@ &cpu100 {
 	cpu-supply = <&reg_dcdc3>;
 };
 
+&csi {
+	status = "okay";
+};
+
+&csi_in {
+	csi_in_mipi_csi2: endpoint {
+		bus-type = <4>; /* CSI2_DPHY */
+		remote-endpoint = <&mipi_csi2_out_csi>;
+	};
+};
+
 &de {
 	status = "okay";
 };
@@ -147,6 +182,36 @@ hdmi_out_con: endpoint {
 	};
 };
 
+&i2c2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c2_pe_pins>;
+	status = "okay";
+
+	ov8865: camera@36 {
+		compatible = "ovti,ov8865";
+		reg = <0x36>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&csi_mclk_pin>;
+		clocks = <&ccu CLK_CSI_MCLK>;
+		clock-names = "extclk";
+		avdd-supply = <&reg_ov8865_avdd>;
+		dovdd-supply = <&reg_ov8865_dovdd>;
+		dvdd-supply = <&reg_ov8865_dvdd>;
+		powerdown-gpios = <&pio 4 17 GPIO_ACTIVE_LOW>; /* PE17 */
+		reset-gpios = <&pio 4 16 GPIO_ACTIVE_LOW>; /* PE16 */
+
+		port {
+			ov8865_out_mipi_csi2: endpoint {
+				bus-type = <4>; /* MIPI CSI-2 D-PHY */
+				clock-lanes = <0>;
+				data-lanes = <1 2 3 4>;
+
+				remote-endpoint = <&mipi_csi2_in_ov8865>;
+			};
+		};
+	};
+};
+
 &mdio {
 	rgmii_phy: ethernet-phy@1 {
 		compatible = "ethernet-phy-ieee802.3-c22";
@@ -154,6 +219,26 @@ rgmii_phy: ethernet-phy@1 {
 	};
 };
 
+&mipi_csi2 {
+	status = "okay";
+};
+
+&mipi_csi2_in {
+	mipi_csi2_in_ov8865: endpoint {
+		bus-type = <4>; /* MIPI CSI-2 D-PHY */
+		clock-lanes = <0>;
+		data-lanes = <1 2 3 4>;
+
+		remote-endpoint = <&ov8865_out_mipi_csi2>;
+	};
+};
+
+&mipi_csi2_out {
+	mipi_csi2_out_csi: endpoint {
+		remote-endpoint = <&csi_in_mipi_csi2>;
+	};
+};
+
 &mmc0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&mmc0_pins>;
@@ -327,11 +412,24 @@ &reg_dldo3 {
 	regulator-name = "vcc-pd";
 };
 
+&reg_dldo4 {
+	regulator-always-on;
+	regulator-min-microvolt = <2800000>;
+	regulator-max-microvolt = <2800000>;
+	regulator-name = "avdd-csi";
+};
+
 &reg_drivevbus {
 	regulator-name = "usb0-vbus";
 	status = "okay";
 };
 
+&reg_eldo1 {
+	regulator-min-microvolt = <1200000>;
+	regulator-max-microvolt = <1200000>;
+	regulator-name = "dvdd-csi-r";
+};
+
 &reg_fldo1 {
 	regulator-min-microvolt = <1080000>;
 	regulator-max-microvolt = <1320000>;
-- 
2.28.0

