[U-Boot] [PATCH] mx6q: mx6qsabrelite: add GPIO_0__CCM_CLKO and GPIO_3__CCM_CLKO2 pin mux

From: Dirk Behme <dirk.behme@de.bosch.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] mx6q: mx6qsabrelite: add GPIO_0__CCM_CLKO and GPIO_3__CCM_CLKO2 pin mux
Date: Wed, 1 Aug 2012 13:50:36 +0200	[thread overview]
Message-ID: <5019180C.4060109@de.bosch.com> (raw)
In-Reply-To: <AD13664F485EE54694E29A7F9D5BE1AF24BE97@039-SN2MPN1-022.039d.mgd.msft.net>

On 01.08.2012 13:26, Liu Hui-R64343 wrote:
>> -----Original Message-----
>> From: u-boot-bounces at lists.denx.de [mailto:u-boot-bounces at lists.denx.de]
>> On Behalf Of Dirk Behme
>> Sent: Wednesday, August 01, 2012 7:06 PM
>> To: u-boot at lists.denx.de
>> Cc: Dirk Behme
>> Subject: [U-Boot] [PATCH] mx6q: mx6qsabrelite: add GPIO_0__CCM_CLKO
>> and GPIO_3__CCM_CLKO2 pin mux
>>
>> A recent Linux kernel (>= 3.5) has support for the SGTL 5000 sound on the
>> SabreLite board. To make this work, U-Boot has to configure the pin mux for
>> PAD_GPIO_0__CCM_CLKO and PAD_GPIO_3__CCM_CLKO2 correctly.
> 
> Why this can't be set in the kernel but relies on u-boot to configure it?

I don't know :(

It took me days to find this U-Boot dependency, thanks to Troy helping 
with this!

I enabled SGTL5000 sound in the kernel and it didn't work. Until I found 
that it works with the ER5 Freescale U-Boot, but not with the recent 
mainline one.

It seems to me that the SGTL5000 kernel feature for the SabreLite was 
developed with a Freescale U-Boot (patching the kernel with DT append) 
and not tested with the mainline U-Boot.

Best regards

Dirk

> Jason
>> Taken from Freescale's ER5 U-Boot for the SabreLite.
>>
>> Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
>> CC: Troy Kisky <troy.kisky@boundarydevices.com>
>> CC: Stefano Babic <sbabic@denx.de>
>> ---
>> board/freescale/mx6qsabrelite/imximage.cfg |    3 +++
>> 1 files changed, 3 insertions(+), 0 deletions(-)
>>
>> 1.7.0.4
>>
>> _______________________________________________
>> U-Boot mailing list
>> U-Boot at lists.denx.de
>> http://lists.denx.de/mailman/listinfo/u-boot
> 
> 
> 

-- 
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Dirk Behme                      Robert Bosch Car Multimedia GmbH
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