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From 4aa602dc3f534cc5b1afcc587f1be8d713e389e5 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Thu, 15 Dec 2022 16:13:07 +0000
Subject: [PATCH] dt: Add camX_reg_gpio to CM4
To make it easier for custom routing of camera control GPIOs,
add the camX_reg_gpio parameter to CM4 DT as well.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
arch/arm/boot/dts/bcm2711-rpi-cm4.dts | 7 +++++++
arch/arm/boot/dts/overlays/README | 18 ++++++++++++------
2 files changed, 19 insertions(+), 6 deletions(-)
--- a/arch/arm/boot/dts/bcm2711-rpi-cm4.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-cm4.dts
@@ -574,5 +574,12 @@ cam0_reg: &cam1_reg {
sd_poll_once = <&emmc2>, "non-removable?";
spi_dma4 = <&spi0>, "dmas:0=", <&dma40>,
<&spi0>, "dmas:8=", <&dma40>;
+
+ cam0_reg = <&cam0_reg>,"status";
+ cam0_reg_gpio = <&cam0_reg>,"gpio:4",
+ <&cam0_reg>,"gpio:0=", <&gpio>;
+ cam1_reg = <&cam1_reg>,"status";
+ cam1_reg_gpio = <&cam1_reg>,"gpio:4",
+ <&cam1_reg>,"gpio:0=", <&gpio>;
};
};
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -144,15 +144,21 @@ Params:
See /sys/kernel/debug/raspberrypi_axi_monitor
for the results.
- cam0_reg Enables CAM 0 regulator. CM1 & 3 only.
+ cam0_reg Enables CAM 0 regulator.
+ Only required on CM1 & 3.
- cam0_reg_gpio Set GPIO for CAM 0 regulator. Default 31.
- CM1 & 3 only.
+ cam0_reg_gpio Set GPIO for CAM 0 regulator.
+ Default 31 on CM1 & 3.
+ Default of GPIO expander 5 on CM4, but override
+ switches to normal GPIO.
- cam1_reg Enables CAM 1 regulator. CM1 & 3 only.
+ cam1_reg Enables CAM 1 regulator.
+ Only required on CM1 & 3.
- cam1_reg_gpio Set GPIO for CAM 1 regulator. Default 3.
- CM1 & 3 only.
+ cam1_reg_gpio Set GPIO for CAM 1 regulator.
+ Default 3 on CM1 & 3.
+ Default of GPIO expander 5 on CM4, but override
+ switches to normal GPIO.
eee Enable Energy Efficient Ethernet support for
compatible devices (default "on"). See also
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