i.MX6 frame buffer inside barebox?

Sascha Hauer s.hauer at pengutronix.de
Wed Jun 18 12:58:49 PDT 2014


On Wed, Jun 18, 2014 at 04:26:48PM +0200, Holger Schurig wrote:
> Hi, I'm a bit puzzled. I compiled my barebox with
> 
> CONFIG_CMD_SPLASH=y
> CONFIG_VIDEO=y
> CONFIG_DRIVER_VIDEO_IMX_IPUV3=y
> CONFIG_DRIVER_VIDEO_IMX_IPUV3_LVDS=y
> CONFIG_DRIVER_VIDEO_SIMPLEFB=y
> 
> and some entries in the device tree about it (see below). And when I
> boot barebox, I see /dev/fb0.
> 
> However, the LVDS signals don't come out of the CPU, e.g. LVDS_CLK0_P
> / LVDS_CLK0_N is silent. Do I need something to enable the drive as
> well?  Simply writing to /dev/fb0, e.g. with the "splash" or "mw -d
> /dev/fdb0" command, doesn't seem to do the magic.

have you enabled the framebuffer? fb0.enable=1

Sascha

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