From 2027e24ef1d143526bfd596294cf8e18fd5dfe49 Mon Sep 17 00:00:00 2001
From: Lee Jackson <info@arducam.com>
Date: Thu, 21 Apr 2022 13:15:34 +0800
Subject: [PATCH] overlays: Add arducam-pivariety-overlay.dts

Added overlays for enabling Arducam Pivariety and add the
relevant information to the README.

Signed-off-by: Lee Jackson <info@arducam.com>
---
 arch/arm/boot/dts/overlays/Makefile           |  1 +
 arch/arm/boot/dts/overlays/README             | 15 +++
 .../overlays/arducam-pivariety-overlay.dts    | 94 +++++++++++++++++++
 3 files changed, 110 insertions(+)
 create mode 100644 arch/arm/boot/dts/overlays/arducam-pivariety-overlay.dts

--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -23,6 +23,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
 	anyspi.dtbo \
 	apds9960.dtbo \
 	applepi-dac.dtbo \
+	arducam-pivariety.dtbo \
 	at86rf233.dtbo \
 	audioinjector-addons.dtbo \
 	audioinjector-bare-i2s.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -582,6 +582,21 @@ Load:   dtoverlay=applepi-dac
 Params: <None>
 
 
+Name:   arducam-pivariety
+Info:   Arducam Pivariety camera module.
+        Uses Unicam 1, which is the standard camera connector on most Pi
+        variants.
+Load:   dtoverlay=arducam-pivariety,<param>=<val>
+Params: rotation                Mounting rotation of the camera sensor (0 or
+                                180, default 0)
+        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).
+
+
 Name:   at86rf233
 Info:   Configures the Atmel AT86RF233 802.15.4 low-power WPAN transceiver,
         connected to spi0.0
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/arducam-pivariety-overlay.dts
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Definitions for Arducam Pivariety camera module on VC I2C bus
+/dts-v1/;
+/plugin/;
+
+/{
+	compatible = "brcm,bcm2835";
+
+	i2c_frag: fragment@0 {
+		target = <&i2c_csi_dsi>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			arducam_pivariety: arducam_pivariety@0c {
+				compatible = "arducam,arducam-pivariety";
+				reg = <0x0c>;
+				status = "okay";
+
+				clocks = <&cam1_clk>;
+				clock-names = "xclk";
+
+				VANA-supply = <&cam1_reg>;	/* 2.8v */
+				VDIG-supply = <&cam_dummy_reg>;	/* 1.8v */
+				VDDL-supply = <&cam_dummy_reg>;	/* 1.2v */
+
+				rotation = <0>;
+				orientation = <2>;
+
+				port {
+					arducam_pivariety_0: endpoint {
+						remote-endpoint = <&csi1_ep>;
+						clock-lanes = <0>;
+						data-lanes = <1 2>;
+						clock-noncontinuous;
+						link-frequencies =
+							/bits/ 64 <493500000>;
+					};
+				};
+			};
+		};
+	};
+
+	csi_frag: fragment@1 {
+		target = <&csi1>;
+		csi: __overlay__ {
+			status = "okay";
+			brcm,media-controller;
+
+			port{
+				csi1_ep: endpoint{
+					remote-endpoint = <&arducam_pivariety_0>;
+					clock-lanes = <0>;
+					data-lanes = <1 2>;
+					clock-noncontinuous;
+				};
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c0if>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	clk_frag: fragment@3 {
+		target = <&cam1_clk>;
+		__overlay__ {
+			clock-frequency = <24000000>;
+			status = "okay";
+		};
+	};
+
+	fragment@4 {
+		target = <&i2c0mux>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	__overrides__ {
+		rotation = <&arducam_pivariety>,"rotation:0";
+		orientation = <&arducam_pivariety>,"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>,
+		       <&arducam_pivariety>, "clocks:0=",<&cam0_clk>,
+		       <&arducam_pivariety>, "VANA-supply:0=",<&cam0_reg>;
+	};
+};