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roliver-rpipelwell
roliver-rpi
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pelwell
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dts: Add 'AI Camera' support
The AI Camera combines an IMX500 and a RP2040 GPIO bridge on a single module. The Raspberry Pi camera regulator is used for both IMX500 and RP2040. SPI, clocks, and reset (required by IMX500) are provided by the RP2040 GPIO bridge. Signed-off-by: Richard Oliver <richard.oliver@raspberrypi.com>
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‎arch/arm/boot/dts/overlays/Makefile

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@@ -136,6 +136,8 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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imx378.dtbo \
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imx462.dtbo \
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imx477.dtbo \
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imx500.dtbo \
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imx500-pi5.dtbo \
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imx519.dtbo \
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imx708.dtbo \
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interludeaudio-analog.dtbo \

‎arch/arm/boot/dts/overlays/README

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@@ -2818,6 +2818,27 @@ Params: rotation Mounting rotation of the camera sensor (0 or
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sync-sink Configure as vsync sink
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Name: imx500
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Info: Sony IMX500 camera module.
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Uses Unicam 1, which is the standard camera connector on most Pi
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variants.
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Load: dtoverlay=imx500,<param>=<val>
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Params: rotation Mounting rotation of the camera sensor (0 or
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180, default 0)
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orientation Sensor orientation (0 = front, 1 = rear,
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2 = external, default external)
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media-controller Configure use of Media Controller API for
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configuring the sensor (default on)
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cam0 Adopt the default configuration for CAM0 on a
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Compute Module (CSI0, i2c_vc, and cam0_reg).
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bypass-cache Do save blocks of data to flash when using
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rp2040-gpio-bridge for SPI transfers.
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Name: imx500-pi5
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Info: See imx500 (this is the Pi 5 version)
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Name: imx519
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Info: Sony IMX519 camera module.
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Uses Unicam 1, which is the standard camera connector on most Pi

‎arch/arm/boot/dts/overlays/imx500-overlay.dts

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// SPDX-License-Identifier: GPL-2.0-only
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// Definitions for IMX500 camera module on VC I2C bus
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/dts-v1/;
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/plugin/;
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#include <dt-bindings/gpio/gpio.h>
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/{
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compatible = "brcm,bcm2835";
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fragment@0 {
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target = <&i2c0if>;
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__overlay__ {
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status = "okay";
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};
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};
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fragment@1 {
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target = <&i2c0mux>;
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__overlay__ {
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status = "okay";
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};
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};
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reg_frag: fragment@2 {
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target = <&cam1_reg>;
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cam_reg: __overlay__ {
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startup-delay-us = <300000>;
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};
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};
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i2c_frag: fragment@100 {
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target = <&i2c_csi_dsi>;
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__overlay__ {
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#address-cells = <1>;
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#size-cells = <0>;
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status = "okay";
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#include "imx500.dtsi"
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#include "rpi-rp2040-gpio-bridge.dtsi"
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};
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};
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csi_frag: fragment@101 {
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target = <&csi1>;
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csi: __overlay__ {
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status = "okay";
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brcm,media-controller;
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port {
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csi_ep: endpoint {
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remote-endpoint = <&cam_endpoint>;
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clock-lanes = <0>;
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data-lanes = <1 2>;
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clock-noncontinuous;
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};
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};
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};
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};
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spi_frag: fragment@102 {
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target = <&spi_bridgedev0>;
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__overlay__ {
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compatible = "sony,imx500";
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};
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};
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chosen_frag: fragment@103 {
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target = <&chosen>;
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__overlay__ {
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core_freq_fixed;
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};
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};
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clocks_frag: fragment@104 {
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target-path = "/clocks";
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__overlay__ {
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clk_aicam: clk-aicam {
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compatible = "fixed-clock";
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#clock-cells = <0>;
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clock-frequency = <24000000>;
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};
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clk_aicam_gated: clk-aicam-gated {
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compatible = "gpio-gate-clock";
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clocks = <&clk_aicam>;
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#clock-cells = <0>;
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enable-gpios = <&spi_bridge 21 GPIO_ACTIVE_HIGH>;
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};
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};
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};
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__overrides__ {
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rotation = <&cam_node>,"rotation:0";
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orientation = <&cam_node>,"orientation:0";
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media-controller = <&csi>,"brcm,media-controller?";
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cam0 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi0>,
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<&csi_frag>, "target:0=",<&csi0>,
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<&spi_bridge>, "power-supply:0=",<&cam0_reg>,
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<&reg_frag>, "target:0=",<&cam0_reg>,
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<&cam_node>, "VANA-supply:0=",<&cam0_reg>;
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bypass-cache = <&spi_bridge>,"bypass-cache?";
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};
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};
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&cam_node {
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status = "okay";
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reset-gpios = <&spi_bridge 20 GPIO_ACTIVE_HIGH>;
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clocks = <&clk_aicam_gated>;
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spi = <&spi_bridgedev0>;
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};
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&spi_bridge {
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status = "okay";
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};
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&cam_endpoint {
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remote-endpoint = <&csi_ep>;
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};

‎arch/arm/boot/dts/overlays/imx500-pi5-overlay.dts

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// SPDX-License-Identifier: GPL-2.0-only
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// Definitions for IMX500 camera module on VC I2C bus
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/dts-v1/;
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/plugin/;
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#include <dt-bindings/gpio/gpio.h>
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/{
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compatible = "brcm,bcm2712";
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fragment@0 {
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target = <&i2c0if>;
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__overlay__ {
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status = "okay";
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};
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};
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fragment@1 {
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target = <&i2c0mux>;
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__overlay__ {
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status = "okay";
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};
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};
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reg_frag: fragment@2 {
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target = <&cam1_reg>;
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cam_reg: __overlay__ {
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startup-delay-us = <300000>;
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};
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};
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i2c_frag: fragment@100 {
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target = <&i2c_csi_dsi>;
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__overlay__ {
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#address-cells = <1>;
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#size-cells = <0>;
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status = "okay";
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#include "imx500.dtsi"
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#include "rpi-rp2040-gpio-bridge.dtsi"
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};
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};
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csi_frag: fragment@101 {
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target = <&csi1>;
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csi: __overlay__ {
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status = "okay";
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brcm,media-controller;
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port {
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csi_ep: endpoint {
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remote-endpoint = <&cam_endpoint>;
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clock-lanes = <0>;
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data-lanes = <1 2>;
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clock-noncontinuous;
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};
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};
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};
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};
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spi_frag: fragment@102 {
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target = <&spi_bridge>;
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spi_frag_overlay: __overlay__ {
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fast_xfer_requires_i2c_lock = <1>;
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fast_xfer_recv_gpio_base = <11>;
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fast_xfer-gpios = <&rp1_gpio 40 0>, // CD1_SDA (used as data)
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<&rp1_gpio 48 0>; // CD1_IO1_MICDAT1 (clock)
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};
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};
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spi_bridge_frag: fragment@103 {
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target = <&spi_bridgedev0>;
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__overlay__ {
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compatible = "sony,imx500";
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};
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};
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clocks_frag: fragment@104 {
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target-path = "/clocks";
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__overlay__ {
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clk_aicam: clk-aicam {
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compatible = "fixed-clock";
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#clock-cells = <0>;
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clock-frequency = <24000000>;
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};
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clk_aicam_gated: clk-aicam-gated {
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compatible = "gpio-gate-clock";
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clocks = <&clk_aicam>;
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#clock-cells = <0>;
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enable-gpios = <&spi_bridge 21 GPIO_ACTIVE_HIGH>;
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};
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};
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};
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__overrides__ {
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rotation = <&cam_node>,"rotation:0";
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orientation = <&cam_node>,"orientation:0";
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media-controller = <&csi>,"brcm,media-controller?";
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cam0 = <&i2c_frag>, "target:0=",<&i2c_csi_dsi0>,
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<&csi_frag>, "target:0=",<&csi0>,
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<&spi_frag_overlay>, "fast_xfer-gpios:4=38", // CD0_SDA (data)
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<&spi_frag_overlay>, "fast_xfer-gpios:16=35", // CD0_IO1_MICDAT0 (clock)
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<&spi_bridge>, "power-supply:0=",<&cam0_reg>,
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<&reg_frag>, "target:0=",<&cam0_reg>,
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<&cam_node>, "VANA-supply:0=",<&cam0_reg>;
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bypass-cache = <&spi_bridge>,"bypass-cache?";
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};
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};
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&cam_node {
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status = "okay";
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reset-gpios = <&spi_bridge 20 GPIO_ACTIVE_HIGH>;
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clocks = <&clk_aicam_gated>;
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spi = <&spi_bridgedev0>;
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};
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&spi_bridge {
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status = "okay";
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};
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&cam_endpoint {
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remote-endpoint = <&csi_ep>;
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};

‎arch/arm/boot/dts/overlays/imx500.dtsi

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// SPDX-License-Identifier: GPL-2.0-only
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cam_node: imx500@1a {
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reg = <0x1a>;
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compatible = "sony,imx500";
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status = "disabled";
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clocks = <&cam1_clk>;
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clock-names = "inck";
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vana-supply = <&cam1_reg>; /* 2.7v */
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vdig-supply = <&cam_dummy_reg>; /* 0.84v */
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vif-supply = <&cam_dummy_reg>; /* 1.8v */
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reset-gpios = <&gpio 255 GPIO_ACTIVE_HIGH>;
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rotation = <0>;
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orientation = <2>;
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port {
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cam_endpoint: endpoint {
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clock-lanes = <0>;
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data-lanes = <1 2>;
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clock-noncontinuous;
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link-frequencies =
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/bits/ 64 <444000000>;
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};
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};
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};

‎arch/arm/boot/dts/overlays/overlay_map.dts

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bcm2711;
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};
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imx500 {
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bcm2835;
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bcm2711;
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bcm2712 = "imx500-pi5";
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};
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imx500-pi5 {
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bcm2712;
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};
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lirc-rpi {
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deprecated = "use gpio-ir";
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};

‎arch/arm/boot/dts/overlays/rpi-rp2040-gpio-bridge.dtsi

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// SPDX-License-Identifier: GPL-2.0-only
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spi_bridge: spi@40 {
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reg = <0x40>;
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compatible = "raspberrypi,rp2040-gpio-bridge";
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status = "disabled";
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#address-cells = <1>;
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#size-cells = <0>;
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power-supply = <&cam1_reg>;
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#gpio-cells = <2>;
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gpio-controller;
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spi_bridgedev0: spidev@0{
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compatible = "spidev";
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reg = <0>; /* CE0 */
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#address-cells = <1>;
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#size-cells = <0>;
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spi-max-frequency = <35000000>;
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};
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};

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