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Subject[PATCH] arm64: dts: imx8mm-venice-gw73xx-0x: add dt overlay for imx219 rpi v2 camera
Date
Add support for the RaspberryPi Camera v2 which is an IMX219 8MP module:
- https://datasheets.raspberrypi.com/camera/camera-v2-schematics.pdf
- has its own on-board 24MHz osc so no clock required from baseboard
- pin 11 enables 1.8V and 2.8V LDO which is connected to
GW73xx MIPI_GPIO4 (IMX8MM GPIO1_IO1) so we use this as a gpio
controlled regulator enable.

Support is added via a device-tree overlay.

The IMX219 supports RAW8/RAW10 image formats.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
---
arch/arm64/boot/dts/freescale/Makefile | 1 +
.../imx8mm-venice-gw73xx-0x-imx219.dts | 84 +++++++++++++++++++
2 files changed, 85 insertions(+)
create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-imx219.dts

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 5ec8d59347b6..eb9fe81ce61e 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -44,6 +44,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mm-var-som-symphony.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw71xx-0x.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-imx219.dtbo
dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs232-rts.dtbo
dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs422.dtbo
dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs485.dtbo
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-imx219.dts b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-imx219.dts
new file mode 100644
index 000000000000..2b76c3201ad6
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-imx219.dts
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2021 Gateworks Corporation
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+
+#include "imx8mm-pinfunc.h"
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+ compatible = "gw,imx8mm-gw73xx-0x", "fsl,imx8mm";
+
+ reg_cam: regulator-cam {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_reg_cam>;
+ compatible = "regulator-fixed";
+ regulator-name = "reg_cam";
+ gpio = <&gpio1 1 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
+
+ cam24m: cam24m {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <24000000>;
+ clock-output-names = "cam24m";
+ };
+};
+
+&csi {
+ status = "okay";
+};
+
+&i2c3 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ imx219: sensor@10 {
+ compatible = "sony,imx219";
+ reg = <0x10>;
+ clocks = <&cam24m>;
+ VDIG-supply = <&reg_cam>;
+
+ port {
+ /* MIPI CSI-2 bus endpoint */
+ imx219_to_mipi_csi2: endpoint {
+ remote-endpoint = <&imx8mm_mipi_csi_in>;
+ clock-lanes = <0>;
+ data-lanes = <1 2>;
+ link-frequencies = /bits/ 64 <456000000>;
+ };
+ };
+ };
+};
+
+&mipi_csi {
+ status = "okay";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ imx8mm_mipi_csi_in: endpoint {
+ remote-endpoint = <&imx219_to_mipi_csi2>;
+ data-lanes = <1 2>;
+ };
+ };
+ };
+};
+
+&iomuxc {
+ pinctrl_reg_cam: regcamgrp {
+ fsl,pins = <
+ MX8MM_IOMUXC_GPIO1_IO01_GPIO1_IO1 0x41
+ >;
+ };
+};
--
2.17.1
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