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From 83b839b8b3a599336c2d48ab22ed919a77666476 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
Date: Mon, 26 Nov 2018 17:02:15 +0000
Subject: [PATCH] dtoverlays: Add i2c on 0&1 option to TC358743,
ADV7282 and OV5647
Adds the option of configuring i2c0 to be on GPIOs 0&1 as
this is of use on the Compute Module.
Also fixes the ov5647 overlay where the override enabled the wrong
fragments.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
---
arch/arm/boot/dts/overlays/README | 14 ++++++++++++--
arch/arm/boot/dts/overlays/adv7282m-overlay.dts | 10 +++++++++-
arch/arm/boot/dts/overlays/ov5647-overlay.dts | 10 +++++++++-
arch/arm/boot/dts/overlays/tc358743-overlay.dts | 10 +++++++++-
4 files changed, 39 insertions(+), 5 deletions(-)
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -277,7 +277,9 @@ Info: Analog Devices ADV7282M analogue
Uses Unicam1, which is the standard camera connector on most Pi
variants.
Load: dtoverlay=adv7282m,<param>=<val>
-Params: i2c_pins_28_29 Use pins 28&29 for the I2C instead of 44&45.
+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.
addr Overrides the I2C address (default 0x21)
@@ -286,7 +288,9 @@ Name: adv728x-m
Info: Analog Devices ADV728[0|1|2]-M analogue video to CSI2 bridges.
This is a wrapper for adv7282m, and defaults to ADV7282M.
Load: dtoverlay=adv728x-m,<param>=<val>
-Params: i2c_pins_28_29 Use pins 28&29 for the I2C instead of 44&45.
+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.
addr Overrides the I2C address (default 0x21)
adv7280m Select ADV7280-M.
@@ -1324,6 +1328,9 @@ Params: cam0-pwdn GPIO use
configuration of the particular Pi variant in
use.
+ 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.
@@ -1949,6 +1956,9 @@ Params: 4lane Use 4 la
(574Mbit/s) and 486000000 (972Mbit/s - default)
are supported by the driver.
+ 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.
--- a/arch/arm/boot/dts/overlays/adv7282m-overlay.dts
+++ b/arch/arm/boot/dts/overlays/adv7282m-overlay.dts
@@ -60,6 +60,13 @@
};
};
fragment@4 {
+ target = <&i2c0_pins>;
+ __dormant__ {
+ brcm,pins = <0 1>;
+ brcm,function = <4>; /* alt0 */
+ };
+ };
+ fragment@5 {
target = <&i2c_vc>;
__overlay__ {
status = "okay";
@@ -67,7 +74,8 @@
};
__overrides__ {
- i2c_pins_28_29 = <0>,"+2-3";
+ i2c_pins_0_1 = <0>,"-2-3+4";
+ i2c_pins_28_29 = <0>,"+2-3-4";
addr = <&adv728x>,"reg:0";
};
};
--- a/arch/arm/boot/dts/overlays/ov5647-overlay.dts
+++ b/arch/arm/boot/dts/overlays/ov5647-overlay.dts
@@ -69,6 +69,13 @@
};
};
fragment@4 {
+ target = <&i2c0_pins>;
+ __dormant__ {
+ brcm,pins = <0 1>;
+ brcm,function = <4>; /* alt0 */
+ };
+ };
+ fragment@5 {
target = <&i2c_vc>;
__overlay__ {
status = "okay";
@@ -76,7 +83,8 @@
};
__overrides__ {
- i2c_pins_28_29 = <0>,"+4-5";
+ i2c_pins_0_1 = <0>,"-2-3+4";
+ i2c_pins_28_29 = <0>,"+2-3-4";
cam0-pwdn = <&ov5647>,"pwdn-gpios:4";
cam0-led = <&ov5647>,"pwdn-gpios:16";
};
--- a/arch/arm/boot/dts/overlays/tc358743-overlay.dts
+++ b/arch/arm/boot/dts/overlays/tc358743-overlay.dts
@@ -94,6 +94,13 @@
};
};
fragment@6 {
+ target = <&i2c0_pins>;
+ __dormant__ {
+ brcm,pins = <0 1>;
+ brcm,function = <4>; /* alt0 */
+ };
+ };
+ fragment@7 {
target = <&i2c_vc>;
__overlay__ {
status = "okay";
@@ -101,7 +108,8 @@
};
__overrides__ {
- i2c_pins_28_29 = <0>,"+4-5";
+ i2c_pins_0_1 = <0>,"-4-5+6";
+ i2c_pins_28_29 = <0>,"+4-5-6";
4lane = <0>, "-2+3";
link-frequency = <&tc358743>,"link-frequencies#0";
};
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