mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-28 01:28:59 +00:00
36 lines
1.2 KiB
Diff
36 lines
1.2 KiB
Diff
From d562b2187263b40aacc1a50d3f25db2cf28696d6 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Tue, 9 Jul 2019 10:32:40 +0100
|
|
Subject: [PATCH] overlays: i2c-gpio: Fix the "bus" parameter
|
|
|
|
The "bus" parameter has two functions - providing unique names for
|
|
multiple instances of the overlay, and allowing the number of the bus
|
|
(i.e. "i2c-<bus>") to be specified. The second function hasn't worked
|
|
as intended because the overlay doesn't include a "reg" property and
|
|
the firmware intentionally won't create a "reg" property if one doesn't
|
|
already exist.
|
|
|
|
Allow the bus numbering scheme to work as intended by providing a "reg"
|
|
with a default value that means "the next available one".
|
|
|
|
See: https://github.com/raspberrypi/linux/issues/3062
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
|
---
|
|
arch/arm/boot/dts/overlays/i2c-gpio-overlay.dts | 2 ++
|
|
1 file changed, 2 insertions(+)
|
|
|
|
--- a/arch/arm/boot/dts/overlays/i2c-gpio-overlay.dts
|
|
+++ b/arch/arm/boot/dts/overlays/i2c-gpio-overlay.dts
|
|
@@ -7,8 +7,10 @@
|
|
|
|
fragment@0 {
|
|
target-path = "/";
|
|
+
|
|
__overlay__ {
|
|
i2c_gpio: i2c@0 {
|
|
+ reg = <0xffffffff>;
|
|
compatible = "i2c-gpio";
|
|
gpios = <&gpio 23 0 /* sda */
|
|
&gpio 24 0 /* scl */
|