bpi-m3-bpi-camera.dts

// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
//
// Copyright (C) 2019 Chen-Yu Tsai <wens@csie.org>
//
// Bananapi camera module v3 for BPI-M3 with OV5640 and OV8865
//
// On the BPI-M3, AFVCC-CSI and IOVDD-CSI are directly tied to AVDD-CSI (DLDO4).
// These, and DVDD-CSI (ELDO1) directly feed the OV8655. (R17 is present, while R23 is not.)
//
// The four onboard regulators feed the OV5640. (R17, R18, R19, R20 are not present.)
// These are enabled when AVDD-CSI is on. They are fed by PS.
//
// CSI-MCLK and CSI-RST are shared by both camera sensors.
//
// TODO: OV8865 @ 0x36, VM149C @ 0x0c, ???? @ 0x20
//
// Note: OV8865 shutdown is active-low, unlike OV5640 where it is active-high

#ifdef __DTO_TEST__
#include <arm/sun8i-a83t-bananapi-m3.dts>
#else
/dts-v1/;
/plugin/;
#endif

#include <dt-bindings/clock/sun8i-a83t-ccu.h>
#include <dt-bindings/gpio/gpio.h>

&{/} {
	reg_ov5640_avdd: ov5640-avdd {
		compatible = "regulator-fixed";
		regulator-name = "ov5640-avdd";
		regulator-min-microvolt = <2800000>;
		regulator-max-microvolt = <2800000>;
		/* dldo4 enables this regulator; real supply is PS */
		vin-supply = <&reg_dldo4>;
	};

	reg_ov5640_dovdd: ov5640-iovdd {
		compatible = "regulator-fixed";
		regulator-name = "ov5640-dovdd";
		regulator-min-microvolt = <2800000>;
		regulator-max-microvolt = <2800000>;
		/* dldo4 enables this regulator; real supply is PS */
		vin-supply = <&reg_dldo4>;
	};

	reg_ov5640_dvdd: ov5640-dvdd {
		compatible = "regulator-fixed";
		regulator-name = "ov5640-dvdd";
		regulator-min-microvolt = <1500000>;
		regulator-max-microvolt = <1500000>;
		/* dldo4 enables this regulator; real supply is PS */
		vin-supply = <&reg_dldo4>;
	};
};

&ccu {
	assigned-clocks = <&ccu CLK_CSI_MCLK>;
	assigned-clock-parents = <&osc24M>;
	assigned-clock-rates = <24000000>;
};

&csi {
	pinctrl-names = "default";
	pinctrl-0 = <&csi_8bit_parallel_pins>;
	status = "okay";
};

&csi_in {
	/* Parallel bus endpoint */
	csi_from_ov5640: endpoint {
		remote-endpoint = <&ov5640_to_csi>;
		bus-width = <8>;
		data-shift = <2>;
		hsync-active = <1>; /* Active high */
		vsync-active = <1>; /* Active high */
		pclk-sample = <1>;  /* Falling */
		rotation = <180>;
	};
};

&i2c2 {
	pinctrl-names = "default";
	pinctrl-0 = <&i2c2_pe_pins>;
	status = "okay";

	ov5640: camera@3c {
		compatible = "ovti,ov5640";
		reg = <0x3c>;
		clocks = <&ccu CLK_CSI_MCLK>;
		clock-names = "xclk";

		/* reset shared with OV8655 */
		reset-gpios = <&pio 4 16 GPIO_ACTIVE_LOW>; /* PE16 */
		powerdown-gpios = <&pio 3 15 GPIO_ACTIVE_HIGH>; /* PD15 */
		AVDD-supply = <&reg_ov5640_avdd>;
		DOVDD-supply = <&reg_ov5640_dovdd>;
		DVDD-supply = <&reg_ov5640_dvdd>;

		port {
			ov5640_to_csi: endpoint {
				remote-endpoint = <&csi_from_ov5640>;
				bus-width = <8>;
				data-shift = <2>;
				hsync-active = <1>; /* Active high */
				vsync-active = <1>; /* Active low */
				pclk-sample = <1>;  /* Rising */
			};
		};
	};
};

&pio {
	pinctrl-names = "default";
	pinctrl-0 = <&csi_mclk_pin>;
#if 0
	/* This is not the real thing, but dldo4 provides pull-ups for I2C */
	vcc-pe-supply = <&reg_dldo4>;
#endif
};

&reg_dldo4 {
	regulator-min-microvolt = <2800000>;
	regulator-max-microvolt = <2800000>;
	regulator-name = "avdd-csi";
	/* This also powers the pull-ups on the CSI connector */
	regulator-always-on;
};

&reg_eldo1 {
	regulator-min-microvolt = <1200000>;
	regulator-max-microvolt = <1200000>;
	regulator-name = "dvdd-csi-r";
};