I'm trying to get my am3517 board working with 4.10 (porting from
2.6.37). An LCD screen is attached to OMAP DSS using 24 bits. Display
config looks like this in [1].
What DTS options reflectes ".acb = 0x0"?
Btw. I just need a frame buffer device and will use it with Embedded
Qt. Should I nevertheless use DRM flavor as it already provides frame
buffer driver?
drivers/gpu/drm/omapdrm/displays/panel-dpi.c performs either platform
or OF initialization. Platform flavor contains data_lines info, OF -
not. As I'm using OF flavor, how do I get proper data_lines info?
[1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id™2ee64af66f05e16aa70b475f9ad3047f801185
Yegor
* Yegor Yefremov [off-list ref] [170104 08:27]:
I'm trying to get my am3517 board working with 4.10 (porting from
2.6.37). An LCD screen is attached to OMAP DSS using 24 bits. Display
config looks like this in [1].
What DTS options reflectes ".acb = 0x0"?
Btw. I just need a frame buffer device and will use it with Embedded
Qt. Should I nevertheless use DRM flavor as it already provides frame
buffer driver?
drivers/gpu/drm/omapdrm/displays/panel-dpi.c performs either platform
or OF initialization. Platform flavor contains data_lines info, OF -
not. As I'm using OF flavor, how do I get proper data_lines info?
Adding Tomi Valkeinen to Cc.
Tony
[1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id™2ee64af66f05e16aa70b475f9ad3047f801185
On 05/01/17 18:49, Tony Lindgren wrote:
* Yegor Yefremov [off-list ref] [170104 08:27]:
quoted
I'm trying to get my am3517 board working with 4.10 (porting from
2.6.37). An LCD screen is attached to OMAP DSS using 24 bits. Display
config looks like this in [1].
What DTS options reflectes ".acb = 0x0"?
acb was only for passive matrix panels, which have never even been
supported. So you can just ignore acb.
quoted
Btw. I just need a frame buffer device and will use it with Embedded
Qt. Should I nevertheless use DRM flavor as it already provides frame
buffer driver?
Depends. If you somehow rely on the custom ioctls from omapfb, then it
might be easiest to use that. However, it's no longer developed, so I
suggest at least trying to use omapdrm first.
quoted
drivers/gpu/drm/omapdrm/displays/panel-dpi.c performs either platform
or OF initialization. Platform flavor contains data_lines info, OF -
not. As I'm using OF flavor, how do I get proper data_lines info?
With the endpoint's data-lines property. See, for example,
am437x-gp-evm.dts.
Tomi