From 584d4bf1d3c2265a810e1494eb5c8ef0a72ee934 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Wed, 27 May 2020 15:12:04 +0200 Subject: bcm27xx: update patches from RPi foundation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit bcm2708: boot tested on RPi B+ v1.2 bcm2709: boot tested on RPi 3B v1.2 bcm2710: boot tested on RPi 3B v1.2 bcm2711: boot tested on RPi 4B v1.1 4G Signed-off-by: Álvaro Fernández Rojas --- ...rlays-gpio-keys-Avoid-open-drain-warnings.patch | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 target/linux/bcm27xx/patches-5.4/950-0705-overlays-gpio-keys-Avoid-open-drain-warnings.patch (limited to 'target/linux/bcm27xx/patches-5.4/950-0705-overlays-gpio-keys-Avoid-open-drain-warnings.patch') diff --git a/target/linux/bcm27xx/patches-5.4/950-0705-overlays-gpio-keys-Avoid-open-drain-warnings.patch b/target/linux/bcm27xx/patches-5.4/950-0705-overlays-gpio-keys-Avoid-open-drain-warnings.patch new file mode 100644 index 0000000000..579b3b61b6 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0705-overlays-gpio-keys-Avoid-open-drain-warnings.patch @@ -0,0 +1,29 @@ +From ae10c15867d9a5b85eefaf11333bd30473af4b2b Mon Sep 17 00:00:00 2001 +From: Phil Elwell +Date: Sat, 2 May 2020 13:43:06 +0100 +Subject: [PATCH] overlays: gpio-keys: Avoid open-drain warnings + +The i2c-gpio driver expects to use a GPIO in open-drain mode. Failure +to configure it in that way causes alarming warnings in the kernel log. +The BCM283x and BCM2711 GPIO blocks don't support open-drain mode, +but i2c-gpio works anyway. Silence the warning by declaring that +open-drain mode has been enabled by other means. + +See: https://github.com/raspberrypi/firmware/issues/1381 + +Signed-off-by: Phil Elwell +--- + 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 +@@ -16,6 +16,8 @@ + &gpio 24 0 /* scl */ + >; + i2c-gpio,delay-us = <2>; /* ~100 kHz */ ++ i2c-gpio,sda-open-drain; ++ i2c-gpio,scl-open-drain; + #address-cells = <1>; + #size-cells = <0>; + }; -- cgit v1.2.3