brcm2708: organize kernel patches

[openwrt/staging/wigyori.git] / target / linux / brcm2708 / patches-4.19 / 950-0637-overlays-i2c-gpio-Fix-the-bus-parameter.patch

diff --git a/target/linux/brcm2708/patches-4.19/950-0637-overlays-i2c-gpio-Fix-the-bus-parameter.patch b/target/linux/brcm2708/patches-4.19/950-0637-overlays-i2c-gpio-Fix-the-bus-parameter.patch
new file mode 100644 (file)
index 0000000..9a6d155
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0637-overlays-i2c-gpio-Fix-the-bus-parameter.patch
@@ -0,0 +1,35 @@
+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 */