From mboxrd@z Thu Jan  1 00:00:00 1970
From: julien.boibessot@free.fr (Julien Boibessot)
Date: Thu, 10 Feb 2011 14:54:52 +0100
Subject: [PATCH] i.MX51 iomux: Fixes MX51_PAD_UART2_TXD__UART2_TXD
	declaration
In-Reply-To: <20110210131051.GU9041@pengutronix.de>
References: <1297245241-9864-1-git-send-email-julien.boibessot@free.fr>
	<20110210131051.GU9041@pengutronix.de>
Message-ID: <4D53EE2C.2030209@free.fr>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

Hi Sascha,

Sascha Hauer a ?crit :
> The patch is probably fine. Can you provide a better commit log,
> something like 'fixes uart3 on $myboard'?
>   
yes, I will try :-)
> >From looking at the datasheet it is not clear to me how the current pin
> configuration bahaves. It looks like a uart tx loopback in the iomuxer.
> Is this correct?
>   
Well I just reverted the setting back to what it was on 2.6.36, before
the recent MX51 iomux reorganisation.
IOMUXC_UART2_IPP_UART_RXD_MUX_SELECT_INPUT register (0x09ec) shouldn't
be used to configure UART2_TXD PAD, otherwise you overwrite current
UART2_RXD PAD config.
Current pin configuration seems to act as a kind of Tx->Rx loopback, yes.

Without my patch, my board (not mainlined yet) can't receive anything on
UART2 (used as console).

Julien