From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Warren Date: Fri, 21 Mar 2014 12:30:40 -0600 Subject: [U-Boot] [PATCH] ARM: tegra: make all I2C ports open-drain In-Reply-To: <1394651444-24134-1-git-send-email-swarren@wwwdotorg.org> References: <1394651444-24134-1-git-send-email-swarren@wwwdotorg.org> Message-ID: <532C8550.8070508@wwwdotorg.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 03/12/2014 01:10 PM, Stephen Warren wrote: > From: Stephen Warren > > I2C protocol requires open-drain IOs. Fix the Dalmore and Venice2 pinmux > tables to configure the IOs correctly. Without this, Tegra may actively > drive the lines high while an external device is actively driving the > lines low, which can only lead to bad things. Tom (or Tom or Albert), This one patch should really be applied as a bug-fix for v2014.04. It'd be good to get it applied soon. The other large pinmux series I sent can obviously wait until the next release.