[PATCH NOT FOR MERGE v4 3/3] ARM: dts: sun8i: a83t: bananapi-m3: Enable MIPI CSI-2 with OV8865

[Paul Kocialkowski]

From: Kévin L'hôpital <kevin.lhopi...@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.lhopi...@bootlin.com>
Signed-off-by: Paul Kocialkowski <paul.kocialkow...@bootlin.com>
---
 arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts | 102 +++++++++++++++++++
 1 file changed, 102 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts 
b/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts
index 431f70234d36..b437eaeb91e9 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 +139,23 @@ &cpu100 {
        cpu-supply = <&reg_dcdc3>;
 };
 
+&csi {
+       status = "okay";
+
+       ports {
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               port@1 {
+                       reg = <1>;
+
+                       csi_in_mipi_csi2: endpoint {
+                               remote-endpoint = <&mipi_csi2_out_csi>;
+                       }
+               };
+       };
+};
+
 &de {
        status = "okay";
 };
@@ -147,6 +188,36 @@ 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>;
+               assigned-clocks = <&ccu CLK_CSI_MCLK>;
+               assigned-clock-rates = <24000000>;
+               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 {
+                               data-lanes = <1 2 3 4>;
+                               link-frequencies = /bits/ 64 <360000000>;
+
+                               remote-endpoint = <&mipi_csi2_in_ov8865>;
+                       };
+               };
+       };
+};
+
 &mdio {
        rgmii_phy: ethernet-phy@1 {
                compatible = "ethernet-phy-ieee802.3-c22";
@@ -154,6 +225,24 @@ rgmii_phy: ethernet-phy@1 {
        };
 };
 
+&mipi_csi2 {
+       status = "okay";
+};
+
+&mipi_csi2_in {
+       mipi_csi2_in_ov8865: endpoint {
+               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 +416,24 @@ &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>;
-- 
2.29.2