From: Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org>
To: Eric Anholt <eric-WhKQ6XTQaPysTnJN9+BGXg@public.gmane.org>,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
Cc: Florian Fainelli
<f.fainelli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Scott Branden <sbranden-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-rpi-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
pbrobinson-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org>
Subject: [PATCH] ARM: dts: bcm2835-rpi: Avoid conflicts on i2c0
Date: Wed, 15 Nov 2017 21:57:04 +0100 [thread overview]
Message-ID: <1510779424-642-1-git-send-email-stefan.wahren@i2se.com> (raw)
The GPU firmware of the Raspberry Pi 3 uses i2c0 to communicate to
the FXL6408 gpio expander. It's a bad idea to use the same interface
from the ARM side. Since this interface isn't used by the other
RPi boards, it's save to remove the complete node and avoid this
conflict.
Signed-off-by: Stefan Wahren <stefan.wahren-eS4NqCHxEME@public.gmane.org>
Fixes: 9d56c22a7861 ("ARM: bcm2835: Add devicetree for the Raspberry Pi 3.")
---
arch/arm/boot/dts/bcm2835-rpi.dtsi | 7 -------
1 file changed, 7 deletions(-)
diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
index e36c392..995d17b 100644
--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
@@ -44,13 +44,6 @@
};
};
-&i2c0 {
- pinctrl-names = "default";
- pinctrl-0 = <&i2c0_gpio0>;
- status = "okay";
- clock-frequency = <100000>;
-};
-
&i2c1 {
pinctrl-names = "default";
pinctrl-0 = <&i2c1_gpio2>;
--
2.7.4
--
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next reply other threads:[~2017-11-15 20:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-15 20:57 Stefan Wahren [this message]
[not found] ` <1510779424-642-1-git-send-email-stefan.wahren-eS4NqCHxEME@public.gmane.org>
2017-11-16 20:34 ` [PATCH] ARM: dts: bcm2835-rpi: Avoid conflicts on i2c0 Eric Anholt
2017-11-17 18:30 ` Dave Stevenson
2017-11-17 19:51 ` Phil Elwell
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