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From 89af5d7df7f548744bd675d96295c0f45e24b31f Mon Sep 17 00:00:00 2001
From: Markus Proeller <markus.proeller@pieye.org>
Date: Thu, 10 Oct 2019 19:13:02 +0200
Subject: [PATCH] dtoverlays: Add an overlay for the Infineon IRS1125
The Infineon IRS1125 is a CSI2 time of flight depth sensor
which has a suitable V4L2 subdevice driver.
Add an overlay for configuring it.
Signed-off-by: Markus Proeller <markus.proeller@pieye.org>
---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 12 +++
.../arm/boot/dts/overlays/irs1125-overlay.dts | 97 +++++++++++++++++++
3 files changed, 110 insertions(+)
create mode 100644 arch/arm/boot/dts/overlays/irs1125-overlay.dts
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -83,6 +83,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
iqaudio-dac.dtbo \
iqaudio-dacplus.dtbo \
iqaudio-digi-wm8804-audio.dtbo \
+ irs1125.dtbo \
jedec-spi-nor.dtbo \
justboom-dac.dtbo \
justboom-digi.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -1347,6 +1347,18 @@ Params: card_name Override
dai stream name.
+Name: irs1125
+Info: Infineon irs1125 TOF camera module.
+ Uses Unicam 1, which is the standard camera connector on most Pi
+ variants.
+Load: dtoverlay=irs1125,<param>=<val>
+Params: i2c_pins_0_1 Use pins 0&1 for the I2C instead of 44&45.
+ Useful on Compute Modules.
+
+ i2c_pins_28_29 Use pins 28&29 for the I2C instead of 44&45.
+ This is required for Pi B+, 2, 0, and 0W.
+
+
Name: jedec-spi-nor
Info: Adds support for JEDEC-compliant SPI NOR flash devices. (Note: The
"jedec,spi-nor" kernel driver was formerly known as "m25p80".)
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/irs1125-overlay.dts
@@ -0,0 +1,97 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Definitions for IRS1125 camera module on VC I2C bus
+/dts-v1/;
+/plugin/;
+
+/{
+ compatible = "brcm,bcm2835";
+
+ fragment@0 {
+ target = <&i2c_vc>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ irs1125: irs1125@3D {
+ compatible = "infineon,irs1125";
+ reg = <0x3D>;
+ status = "okay";
+
+ pwdn-gpios = <&gpio 5 0>;
+ clocks = <&irs1125_clk>;
+
+ irs1125_clk: camera-clk {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <26000000>;
+ };
+
+ port {
+ irs1125_0: endpoint {
+ remote-endpoint = <&csi1_ep>;
+ clock-lanes = <0>;
+ data-lanes = <1 2>;
+ clock-noncontinuous;
+ link-frequencies =
+ /bits/ 64 <297000000>;
+ };
+ };
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&csi1>;
+ __overlay__ {
+ status = "okay";
+
+ port {
+ csi1_ep: endpoint {
+ remote-endpoint = <&irs1125_0>;
+ };
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c0_pins>;
+ __dormant__ {
+ brcm,pins = <28 29>;
+ brcm,function = <4>; /* alt0 */
+ };
+ };
+ fragment@3 {
+ target = <&i2c0_pins>;
+ __overlay__ {
+ brcm,pins = <44 45>;
+ brcm,function = <5>; /* alt1 */
+ };
+ };
+ fragment@4 {
+ target = <&i2c0_pins>;
+ __dormant__ {
+ brcm,pins = <0 1>;
+ brcm,function = <4>; /* alt0 */
+ };
+ };
+ fragment@5 {
+ target = <&i2c_vc>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@6 {
+ target-path="/__overrides__";
+ __overlay__ {
+ cam0-pwdn-ctrl = <&irs1125>,"pwdn-gpios:0";
+ cam0-pwdn = <&irs1125>,"pwdn-gpios:4";
+ };
+ };
+
+ __overrides__ {
+ i2c_pins_0_1 = <0>,"-2-3+4";
+ i2c_pins_28_29 = <0>,"+2-3-4";
+ };
+};
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