From: noralf@tronnes.org (Noralf Trønnes)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 8/8] ARM: bcm2835: Disable i2c2 in the Device Tree
Date: Tue, 27 Sep 2016 13:57:06 +0200 [thread overview]
Message-ID: <1474977426-3272-9-git-send-email-noralf@tronnes.org> (raw)
In-Reply-To: <1474977426-3272-1-git-send-email-noralf@tronnes.org>
i2c2 is connected to the HDMI connector and is controlled by the
firmware. Disable it to stay out of harms way.
>From the downstream commit:
i2c-bcm2708/BCM270X_DT: Add support for I2C2
The third I2C bus (I2C2) is normally reserved for HDMI use. Careless
use of this bus can break an attached display - use with caution.
It is recommended to disable accesses by VideoCore by setting
hdmi_ignore_edid=1 or hdmi_edid_file=1 in config.txt.
Signed-off-by: Noralf Tr?nnes <noralf@tronnes.org>
---
arch/arm/boot/dts/bcm2835-rpi.dtsi | 4 ----
1 file changed, 4 deletions(-)
diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
index e9b47b2..8bffbee 100644
--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
@@ -59,10 +59,6 @@
clock-frequency = <100000>;
};
-&i2c2 {
- status = "okay";
-};
-
&sdhci {
status = "okay";
bus-width = <4>;
--
2.8.2
next prev parent reply other threads:[~2016-09-27 11:57 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-27 11:56 [PATCH v2 0/8] i2c: bcm2835: Bring in changes from downstream Noralf Trønnes
2016-09-27 11:56 ` [PATCH v2 1/8] i2c: bcm2835: Fix hang for writing messages larger than 16 bytes Noralf Trønnes
2016-09-27 11:57 ` [PATCH v2 2/8] i2c: bcm2835: Protect against unexpected TXW/RXR interrupts Noralf Trønnes
2016-09-27 11:57 ` [PATCH v2 3/8] i2c: bcm2835: Use ratelimited logging on transfer errors Noralf Trønnes
2016-09-27 13:01 ` Martin Sperl
2016-09-27 19:27 ` Noralf Trønnes
2016-09-27 11:57 ` [PATCH v2 4/8] i2c: bcm2835: Can't support I2C_M_IGNORE_NAK Noralf Trønnes
2016-09-27 11:57 ` [PATCH v2 5/8] i2c: bcm2835: Add support for Repeated Start Condition Noralf Trønnes
2016-09-27 11:57 ` [PATCH v2 6/8] i2c: bcm2835: Support i2c-dev ioctl I2C_TIMEOUT Noralf Trønnes
2016-09-27 11:57 ` [PATCH v2 7/8] i2c: bcm2835: Add support for dynamic clock Noralf Trønnes
2016-09-27 11:57 ` Noralf Trønnes [this message]
2016-09-27 17:25 ` [PATCH v2 8/8] ARM: bcm2835: Disable i2c2 in the Device Tree Stefan Wahren
2016-09-27 18:53 ` Jan Kandziora
2016-09-27 19:23 ` Noralf Trønnes
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