Hi all,
On Fri, 18 Oct 2024 at 11:33, Geert Uytterhoeven
<geert+renesas@xxxxxxxxx> wrote:
> Add support for the mini-DisplayPort connector on the White Hawk
> BreakOut board. This port is driven by a TI SN65DSI86 DSI to eDP
> bridge, which in turn gets the pixel data from the second DSI channel on
> the R-Car V4H SoC. Note that this port is not present on the White Hawk
> Single development board.
>
> Based on the work by Tomi Valkeinen for the mini-DP port on the White
> Hawk CPU board, and by a patch in the BSP by LUU HOAI.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> Does not work:
> - Display resolution is detected correctly (1920x1080 or 2560x1440),
> - Black screen, displays say no signal detected,
The second display pipeline has a Display Stream Compression (DSC)
encoder between the Display Unit (DU) and the DSI encoder. Forcing the
DSC module clock on gives a working display, just like on Sparrow Hawk.
So now we just need DT bindings for the DSC, and a very simple DSC
driver that calls pm_runtime_resume_and_get() ;-)
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
