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author | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-09-04 19:01:23 +0200 |
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committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-09-04 19:02:48 +0200 |
commit | 662394fb30fdbcc89ec387918714aebee6868a9f (patch) | |
tree | c308c5f1a650abf9d9ccbb2a1747469a0d8570c0 /target/linux/brcm2708/patches-4.19/950-0697-overlays-i2c-gpio-Fix-the-bus-parameter.patch | |
parent | 99a5e285887c4a10aaf06d8e01fae0707995da00 (diff) | |
download | upstream-662394fb30fdbcc89ec387918714aebee6868a9f.tar.gz upstream-662394fb30fdbcc89ec387918714aebee6868a9f.tar.bz2 upstream-662394fb30fdbcc89ec387918714aebee6868a9f.zip |
brcm2708: update to latest patches from RPi foundation
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0697-overlays-i2c-gpio-Fix-the-bus-parameter.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0697-overlays-i2c-gpio-Fix-the-bus-parameter.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0697-overlays-i2c-gpio-Fix-the-bus-parameter.patch b/target/linux/brcm2708/patches-4.19/950-0697-overlays-i2c-gpio-Fix-the-bus-parameter.patch new file mode 100644 index 0000000000..daba59dc93 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0697-overlays-i2c-gpio-Fix-the-bus-parameter.patch @@ -0,0 +1,35 @@ +From 274eef4797a1a39b9f098cd2a156c2be5b6024a6 Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Tue, 9 Jul 2019 10:32:40 +0100 +Subject: [PATCH 697/782] 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 */ |