[v7,7/7] ARM: dts: sun8i-a83t: Add BananaPi M3 OV8865 camera overlay

Add an overlay supporting the OV8865 from the BananaPi Camera v3
peripheral board. The board has two sensors (OV5640 and OV8865)
which cannot be supported in parallel as they share the same reset
pin and the kernel currently has no support for this case.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
---
 arch/arm/boot/dts/allwinner/Makefile          |   1 +
 .../sun8i-a83t-bananapi-m3-camera-ov8865.dtso | 109 ++++++++++++++++++
 2 files changed, 110 insertions(+)
 create mode 100644 arch/arm/boot/dts/allwinner/sun8i-a83t-bananapi-m3-camera-ov8865.dtso

Hi Paul,

same comments as for patch 6.

Best regards,
Jernej

On Wednesday, November 22, 2023 3:14:25 PM CET Paul Kocialkowski wrote:
> Add an overlay supporting the OV8865 from the BananaPi Camera v3
> peripheral board. The board has two sensors (OV5640 and OV8865)
> which cannot be supported in parallel as they share the same reset
> pin and the kernel currently has no support for this case.
> 
> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
> ---
>  arch/arm/boot/dts/allwinner/Makefile          |   1 +
>  .../sun8i-a83t-bananapi-m3-camera-ov8865.dtso | 109 ++++++++++++++++++
>  2 files changed, 110 insertions(+)
>  create mode 100644 arch/arm/boot/dts/allwinner/sun8i-a83t-bananapi-m3-camera-ov8865.dtso
> 
> diff --git a/arch/arm/boot/dts/allwinner/Makefile b/arch/arm/boot/dts/allwinner/Makefile
> index a0a9aa6595e4..980ac88634e3 100644
> --- a/arch/arm/boot/dts/allwinner/Makefile
> +++ b/arch/arm/boot/dts/allwinner/Makefile
> @@ -278,6 +278,7 @@ dtb-$(CONFIG_MACH_SUN8I) += \
>  	sun8i-a83t-allwinner-h8homlet-v2.dtb \
>  	sun8i-a83t-bananapi-m3.dtb \
>  	sun8i-a83t-bananapi-m3-camera-ov5640.dtbo \
> +	sun8i-a83t-bananapi-m3-camera-ov8865.dtbo \
>  	sun8i-a83t-cubietruck-plus.dtb \
>  	sun8i-a83t-tbs-a711.dtb \
>  	sun8i-h2-plus-bananapi-m2-zero.dtb \
> diff --git a/arch/arm/boot/dts/allwinner/sun8i-a83t-bananapi-m3-camera-ov8865.dtso b/arch/arm/boot/dts/allwinner/sun8i-a83t-bananapi-m3-camera-ov8865.dtso
> new file mode 100644
> index 000000000000..0656ee8d4bfe
> --- /dev/null
> +++ b/arch/arm/boot/dts/allwinner/sun8i-a83t-bananapi-m3-camera-ov8865.dtso
> @@ -0,0 +1,109 @@
> +// SPDX-License-Identifier: GPL-2.0 OR X11
> +/*
> + * Copyright 2022 Bootlin
> + * Author: Kévin L'hôpital <kevin.lhopital@bootlin.com>
> + * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
> + */
> +
> +/dts-v1/;
> +/plugin/;
> +
> +#include <dt-bindings/clock/sun8i-a83t-ccu.h>
> +#include <dt-bindings/gpio/gpio.h>
> +
> +&{/} {
> +	/*
> +	 * These regulators actually have DLDO4 tied to their EN pin, which is
> +	 * described as input supply here for lack of a better representation.
> +	 * Their actual supply is PS, which is always-on.
> +	 */
> +
> +	ov8865_avdd: ov8865-avdd {
> +		compatible = "regulator-fixed";
> +		regulator-name = "ov8865-avdd";
> +		regulator-min-microvolt = <2800000>;
> +		regulator-max-microvolt = <2800000>;
> +		vin-supply = <&reg_dldo4>;
> +	};
> +
> +	ov8865_dovdd: ov8865-dovdd {
> +		compatible = "regulator-fixed";
> +		regulator-name = "ov8865-dovdd";
> +		regulator-min-microvolt = <2800000>;
> +		regulator-max-microvolt = <2800000>;
> +		vin-supply = <&reg_dldo4>;
> +	};
> +
> +	ov8865_dvdd: ov8865-dvdd {
> +		compatible = "regulator-fixed";
> +		regulator-name = "ov8865-dvdd";
> +		regulator-min-microvolt = <1200000>;
> +		regulator-max-microvolt = <1200000>;
> +		vin-supply = <&reg_dldo4>;
> +	};
> +};
> +
> +&ccu {
> +	assigned-clocks = <&ccu CLK_CSI_MCLK>;
> +	assigned-clock-parents = <&osc24M>;
> +	assigned-clock-rates = <24000000>;
> +};
> +
> +&csi {
> +	status = "okay";
> +};
> +
> +&i2c2 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&i2c2_pe_pins>;
> +	status = "okay";
> +
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +
> +	ov8865: camera@36 {
> +		compatible = "ovti,ov8865";
> +		reg = <0x36>;
> +
> +		clocks = <&ccu CLK_CSI_MCLK>;
> +		assigned-clocks = <&ccu CLK_CSI_MCLK>;
> +		assigned-clock-parents = <&osc24M>;
> +		assigned-clock-rates = <24000000>;
> +
> +		avdd-supply = <&ov8865_avdd>;
> +		dovdd-supply = <&ov8865_dovdd>;
> +		dvdd-supply = <&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 {
> +				remote-endpoint = <&mipi_csi2_in_ov8865>;
> +				link-frequencies = /bits/ 64 <360000000>;
> +				data-lanes = <1 2 3 4>;
> +			};
> +		};
> +	};
> +};
> +
> +&mipi_csi2 {
> +	status = "okay";
> +};
> +
> +&mipi_csi2_in {
> +	mipi_csi2_in_ov8865: endpoint {
> +		remote-endpoint = <&ov8865_out_mipi_csi2>;
> +		data-lanes = <1 2 3 4>;
> +	};
> +};
> +
> +&pio {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&csi_mclk_pin>;
> +};
> +
> +&reg_dldo4 {
> +	regulator-min-microvolt = <2800000>;
> +	regulator-max-microvolt = <2800000>;
> +};
>