From a36565341b0b144ea37c4793793e3c835cc6458d Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Thu, 10 Jun 2021 17:42:47 +0100
Subject: [PATCH] dtoverlays: Add overlay for Sony IMX258 image sensor

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
 arch/arm/boot/dts/overlays/Makefile           |   1 +
 arch/arm/boot/dts/overlays/README             |  18 +++
 arch/arm/boot/dts/overlays/imx258-overlay.dts | 148 ++++++++++++++++++
 3 files changed, 167 insertions(+)
 create mode 100644 arch/arm/boot/dts/overlays/imx258-overlay.dts

--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -98,6 +98,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
 	i2s-gpio28-31.dtbo \
 	ilitek251x.dtbo \
 	imx219.dtbo \
+	imx258.dtbo \
 	imx290.dtbo \
 	imx378.dtbo \
 	imx477.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -1872,6 +1872,24 @@ Params: rotation                Mounting
         vcm                     Configure a VCM focus drive on the sensor.
 
 
+Name:   imx258
+Info:   Sony IMX258 camera module.
+        Uses Unicam 1, which is the standard camera connector on most Pi
+        variants.
+Load:   dtoverlay=imx258,<param>=<val>
+Params: rotation                Mounting rotation of the camera sensor (0 or
+                                180, default 180)
+        orientation             Sensor orientation (0 = front, 1 = rear,
+                                2 = external, default external)
+        media-controller        Configure use of Media Controller API for
+                                configuring the sensor (default on)
+        cam0                    Adopt the default configuration for CAM0 on a
+                                Compute Module (CSI0, i2c_vc, and cam0_reg).
+        vcm                     Configure a VCM focus drive on the sensor.
+        4lane                   Enable 4 CSI2 lanes. This requires a Compute
+                                Module (1, 3, or 4).
+
+
 Name:   imx290
 Info:   Sony IMX290 camera module.
         Uses Unicam 1, which is the standard camera connector on most Pi
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/imx258-overlay.dts
@@ -0,0 +1,148 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Definitions for IMX258 camera module on VC I2C bus
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+/{
+	compatible = "brcm,bcm2835";
+
+	fragment@2 {
+		target = <&i2c0if>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	clk_frag: fragment@3 {
+		target = <&cam1_clk>;
+		cam_clk: __overlay__ {
+			clock-frequency = <24000000>;
+			status = "okay";
+		};
+	};
+
+	fragment@4 {
+		target = <&i2c0mux>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	reg_frag: fragment@5 {
+		target = <&cam1_reg>;
+		cam_reg: __overlay__ {
+			regulator-name = "imx258_vana";
+			startup-delay-us = <300000>;
+			regulator-min-microvolt = <2700000>;
+			regulator-max-microvolt = <2700000>;
+		};
+	};
+
+	i2c_frag: fragment@100 {
+		target = <&i2c_csi_dsi>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			imx258: imx258@10 {
+				compatible = "sony,imx258";
+				reg = <0x10>;
+				status = "okay";
+
+				clocks = <&cam1_clk>;
+				clock-names = "xclk";
+
+				vana-supply = <&cam1_reg>;	/* 2.8v */
+				vdig-supply = <&cam_dummy_reg>;	/* 1.05v */
+				vif-supply = <&cam_dummy_reg>;	/* 1.8v */
+
+				rotation = <180>;
+				orientation = <2>;
+
+				port {
+					imx258_0: endpoint {
+						remote-endpoint = <&csi_ep>;
+						clock-lanes = <0>;
+						clock-noncontinuous;
+						link-frequencies =
+							/bits/ 64 <633600000
+								320000000>;
+					};
+				};
+			};
+
+			vcm: ad5398@0c {
+				compatible = "adi,ad5398";
+				reg = <0x0c>;
+				status = "disabled";
+				VANA-supply = <&cam1_reg>;
+			};
+		};
+	};
+
+	csi_frag: fragment@101 {
+		target = <&csi1>;
+		csi: __overlay__ {
+			status = "okay";
+			brcm,media-controller;
+
+			port {
+				csi_ep: endpoint {
+					remote-endpoint = <&imx258_0>;
+					clock-lanes = <0>;
+					clock-noncontinuous;
+				};
+			};
+		};
+	};
+
+	fragment@102 {
+		target = <&imx258_0>;
+		__overlay__ {
+			data-lanes = <1 2>;
+			link-frequencies = /bits/ 64 <633600000
+						      320000000>;
+		};
+	};
+
+	fragment@103 {
+		target = <&imx258_0>;
+		__dormant__ {
+			data-lanes = <1 2 3 4>;
+			link-frequencies =
+				/bits/ 64 <633600000 320000000>;
+		};
+	};
+
+	fragment@104 {
+		target = <&csi_ep>;
+		__overlay__ {
+			data-lanes = <1 2>;
+		};
+	};
+
+	fragment@105 {
+		target = <&csi_ep>;
+		__dormant__ {
+			data-lanes = <1 2 3 4>;
+		};
+	};
+
+	__overrides__ {
+		rotation = <&imx258>,"rotation:0";
+		orientation = <&imx258>,"orientation:0";
+		media-controller = <&csi>,"brcm,media-controller?";
+		cam0 = <&i2c_frag>, "target:0=",<&i2c_vc>,
+		       <&csi_frag>, "target:0=",<&csi0>,
+		       <&clk_frag>, "target:0=",<&cam0_clk>,
+		       <&reg_frag>, "target:0=",<&cam0_reg>,
+		       <&imx258>, "clocks:0=",<&cam0_clk>,
+		       <&imx258>, "vana-supply:0=",<&cam0_reg>;
+		vcm = <&vcm>, "status=okay",
+		      <&imx258>,"lens-focus:0=", <&vcm>;
+		4lane = <0>, "-102+103-104+105";
+	};
+};