From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934199AbcI0L7U (ORCPT ); Tue, 27 Sep 2016 07:59:20 -0400 Received: from smtp.domeneshop.no ([194.63.252.55]:47756 "EHLO smtp.domeneshop.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933475AbcI0L5x (ORCPT ); Tue, 27 Sep 2016 07:57:53 -0400 From: =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= To: wsa@the-dreams.de, swarren@wwwdotorg.org, eric@anholt.net Cc: linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= Subject: [PATCH v2 8/8] ARM: bcm2835: Disable i2c2 in the Device Tree Date: Tue, 27 Sep 2016 13:57:06 +0200 Message-Id: <1474977426-3272-9-git-send-email-noralf@tronnes.org> X-Mailer: git-send-email 2.8.2 In-Reply-To: <1474977426-3272-1-git-send-email-noralf@tronnes.org> References: <1474977426-3272-1-git-send-email-noralf@tronnes.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.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 Trønnes --- 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