On 01.08.2012 13:26, Liu Hui-R64343 wrote:
-----Original Message----- From: u-boot-bounces@lists.denx.de [mailto:u-boot-bounces@lists.denx.de] On Behalf Of Dirk Behme Sent: Wednesday, August 01, 2012 7:06 PM To: u-boot@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
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