rob, i tried using dsi_mgr_parse_dual_dsi , but dsi1 is not getting enabled for some reason, may be TODO:apq8064 more when we use dual dsi in dts.
so i am trying without using dsi_mgr_parse_dual_dsi/dual dsi in dts after modifying dsi_manager.c , now userspace is assuming as single display for two encoders dsi_mgr_connector_get_modes if (IS_DUAL_DSI() || id == DSI_1 ) dsi_dual_connector_tile_init thanks. On Wed, Jun 14, 2017 at 7:21 PM, Rob Clark <[email protected]> wrote: > On Wed, Jun 14, 2017 at 7:25 AM, Vinay Simha B N <[email protected]> > wrote: > > hi, > > > > i am having two encoders dsi1 and dsi2 of same resolution, i want to > > configure as single resolution 960x864, > > > > after configuring as right-of , i got 960x864 resolution, but not able to > > use as single fb as of xinerma > > xrandr --output DSI-1 --mode 480x864 --right-of DSI-2 > > > > root@linaro-alip:~# xrandr > > Screen 0: minimum 320 x 200, current 960 x 864, maximum 2048 x 2048 > > DSI-1 connected 480x864+480+0 (normal left inverted right x axis y axis) > 0mm > > x 0mm > > 480x864 60.00* > > DSI-2 connected 480x864+0+0 (normal left inverted right x axis y axis) > 0mm x > > 0mm > > 480x864 60.00* > > > > any suggestions on how to configure it as xinerma? if not possible i > guess > > need to modify the drm fbdev and divide the buffer(h/2) to left and right > > encoders. > > > You probably don't want to use xinerama, but normal xrandr commands should > work. > > But you probably want to have the kernel put TILE mode properties on > the connector (similar to DP MST display) so userspace realizes this > is logically a single display and sets things up automatically. See > drm_mode_create_tile_group(). The code should already be in place to > call this but maybe you are missing the dt property? See > dsi_mgr_parse_dual_dsi(). > > xf86-video-freedreno might not handle the TILE properties properly, > but xf86-video-modesetting should (and is the ddx driver that everyone > should be using unless you have a very old xserver) > > BR, > -R > -- regards, vinaysimha
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