RK3399 DSI and panel driver question

[Peter Robinson]

> Does anyone have any experience with RK3399 DSI and panel bringup in u-
> boot?  I believe I have the vopl and mipi configured - I can see the
> backlight come on at least - but I think I need a panel-specific
> driver.  Simple-panel doesn't send dsi commands so the panel never
> inits.  And I'm not clear if I need the dsi-host driver bound to the
> vopl in the way the stm32f469 does it.
>
> I have a BSP that uses an old u-boot with backported Linux DRM code
> that supposedly works but I've not been able to get that working
> either.  I found a dsi panel driver there but it wants a
> mipi_dsi_device to send dsi commands and I'm not sure how to configure
> one of those.
>
> Any pointers would be appreciated.  Thanks.

There's a patch series [1] that improves some of this space, but
that's a eDP connection but it does improve a bunch of the rk3399
display support in U-Boot so that may be a good starting point.

Peter

[1] http://patchwork.ozlabs.org/project/uboot/cover/20201120132421.500365403@rtp-net.org/