[U-Boot] [PATCH] serial_mxc: disable new features of autobaud detection

Stefano Babic sbabic at denx.de
Wed May 28 17:39:00 CEST 2014


On 15/05/2014 01:58, 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 <eric.nelson at boundarydevices.com>
> Tested-by: Fabio Estevam <fabio.estevam at freescale.com>
> ---


Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic


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