From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Nelson Date: Wed, 14 May 2014 16:55:18 -0700 Subject: [U-Boot] [RFC PATCH 2/2] serial_mxc: disable new features of autobaud detection In-Reply-To: References: <1400090674-10586-1-git-send-email-eric.nelson@boundarydevices.com> <1400090674-10586-3-git-send-email-eric.nelson@boundarydevices.com> Message-ID: <53740266.70306@boundarydevices.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Thanks Fabio, On 05/14/2014 04:36 PM, Fabio Estevam wrote: > On Wed, May 14, 2014 at 3:04 PM, Eric Nelson > wrote: >> Bit 7 of UCR3 is described in the i.MX3x/i.MX5x/i.MX6x >> reference manuals as follows: >> >> Autobaud Detection Not Improved-. Disables new features of >> autobaud detection (See Baud Rate Automatic Detection >> Protocol, for more details). >> >> 0 Autobaud detection new features selected >> 1 Keep old autobaud detection mechanism >> >> On at least i.MX6DQ, i.MX6DLS and i.MX53, the "new features" >> occasionally cause the receiver to get out of sync and >> continuously produce received characters of '\xff'. >> >> This patch disables the "new feature" on all boards, since >> there's no support for auto-baud in U-Boot on any of them. >> >> More details are available in this post on i.MX Community: >> https://community.freescale.com/message/403254 >> >> Signed-off-by: Eric Nelson > > Good job, Eric! > > I was able to test it on mx6 and mx53 boards: > > Tested-by: Fabio Estevam > Since you've dug through all of the reference manuals, I'll re-send Patch 2 without the RFC. Regards, Eric