Am Mittwoch, den 21.06.2017, 13:35 +0200 schrieb gianluca: > On 06/21/2017 08:32 AM, Sascha Hauer wrote: > > Hi Gianluca, > > > > On Mon, Jun 19, 2017 at 05:49:41PM +0200, gianluca wrote: > >> Hello Lucas, Sascha and the barebox mailing list guys! > >> > >> I am back with the new boards batch release (now QuadPlus and DualLite iMX6) > >> > >> Now I adapted barebox to fit both processors and it works quite well. > >> > >> From Barebox point-of-view the ldb node of the device-tree is using three > >> timings and they are working good depending on which panel bridge board I am > >> connecting to (1280x800, 1024x600 and 800x480). > >> > >> The custom startup code of barebox is looking for a special eeprom on the > >> panel-bridge and set the device tree accordingly, i.e. setting the > >> native-mode node to the correct display-timing. > >> > >> The same device-tree is used in Linux (as in attachment) as you can see the > >> ldb section and the panel section, using a simple-panel and a correct panel > >> timing using the innolux,g101ice_l01 panel driver timings. > >> > >>> > >>>> No, Linux does not support DT defined modes in the panel. You need a > >>>> panel with a proper compatible and driver. > >>>> > >>>> See drivers/gpu/drm/panel. For most LVDS panels simple-panel is what you > >>>> want to use. > >>>> > >> > >> They are ignored in the Barebox starup (as you know barebox can use the > >> display-timings in the ldb section) but the panel section is used in linux. > >> > >> Nevertheless it does not work. > > > > What exactly does not work? No picture in barebox? Any error messages? > > Does it work in Linux? > > > > In Barebox no problem at all (screen frequency apart. For every > display-timing found it gives me @0 Hz...). > > The problem is in Linux. The utility fbset is giving me 16bpp!! > > The panel driver used (innolux,g101ice-l01) has the RGB888 format and > the ldb in the device-tree section has fsl,data-width = <24> > > This issue is present for every panel I use (lg,lb070wv8 and > auo,b101aw03 too) so maybe some misconfiguration somewhere... > > I was supposed to have 24 or 32 bit in the framebuffer driver using > fbset... May be some fbset issue? > > Some issue??? I have no Xorg. only fbdev The fbdev emulation in the imx-drm driver defaults to 16bpp. If you want to change this you need to provide the module parameter "legacyfb_depth=32". Regards, Lucas _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
