arm64: dts: imx8mm-venice-gw72xx-0x: add dt overlay for imx219 rpi v2 camera

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

Support is added via a device-tree overlay.

The IMX219 supports RAW8/RAW10 image formats.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index a84463b..7f51b53 100644 (file)
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -99,6 +99,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8qxp-colibri-eval-v3.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8qxp-mek.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8ulp-evk.dtb
 
+imx8mm-venice-gw72xx-0x-imx219-dtbs    := imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-imx219.dtbo
 imx8mm-venice-gw72xx-0x-rs232-rts-dtbs := imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rs232-rts.dtbo
 imx8mm-venice-gw72xx-0x-rs422-dtbs     := imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rs422.dtbo
 imx8mm-venice-gw72xx-0x-rs485-dtbs     := imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rs485.dtbo
@@ -107,6 +108,7 @@ imx8mm-venice-gw73xx-0x-rs232-rts-dtbs      := imx8mm-venice-gw73xx-0x.dtb imx8mm-ven
 imx8mm-venice-gw73xx-0x-rs422-dtbs     := imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs422.dtbo
 imx8mm-venice-gw73xx-0x-rs485-dtbs     := imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs485.dtbo
 
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-imx219.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-rs232-rts.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-rs422.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-rs485.dtb

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-imx219.dts b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-imx219.dts
new file mode 100644 (file)
index 0000000..4eaf8aa
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx-0x-imx219.dts
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2022 Gateworks Corporation
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+
+#include "imx8mm-pinfunc.h"
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+       compatible = "gw,imx8mm-gw72xx-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>;
+                       };
+               };
+
+               port@1 {
+                       reg = <1>;
+
+                       imx8mm_mipi_csi_out: endpoint {
+                               remote-endpoint = <&csi_in>;
+                       };
+               };
+       };
+};
+
+&iomuxc {
+       pinctrl_reg_cam: regcamgrp {
+               fsl,pins = <
+                       MX8MM_IOMUXC_GPIO1_IO01_GPIO1_IO1       0x41
+               >;
+       };
+};