Re: [PATCH v9 00/19] Add Freescale i.MX8qxp Display Controller support

[Liu Ying]

On Thu, Jul 16, 2026 at 08:26:12AM +0200, Francesco Dolcini wrote:
> On Thu, Jul 16, 2026 at 02:21:31PM +0800, Liu Ying wrote:
> > On Tue, Jul 14, 2026 at 09:36:27PM +0200, Francesco Dolcini wrote:
> > > On Mon, Apr 14, 2025 at 11:50:09AM +0800, Liu Ying wrote:
> > > > Hi,
> > > > 
> > > > This patch series aims to add Freescale i.MX8qxp Display Controller support.
> > > > 
> > > > The controller is comprised of three main components that include a blit
> > > > engine for 2D graphics accelerations, display controller for display output
> > > > processing, as well as a command sequencer.
> > > 
> > > ...
> > > 
> > > > 
> > > > To follow up i.MX8qxp TRM, I changed the controller name to "Display Controller"
> > > > instead of the previous "DPU".  "DPU" is only mentioned in the SoC block
> > > > diagram and represents the whole display subsystem which includes the display
> > > > controller and prefech engines, etc.
> > > > 
> > > > With an additional patch[1] for simple-pm-bus.c, this series facilitates
> > > > testing a LVDS panel on i.MX8qxp MEK.
> > > > 
> > > > Please do NOT merge patch 14-19.  They are only used to facilitate testing
> > > > the LVDS panel.
> > > 
> > > What's the plan to conclude this work? What's the latest status?
> > > I am looking forward to have a way to use the i.MX8QXP display with
> > > mainline, but to my understanding some required changes on the SOC dtsi
> > > are not merged.
> > > 
> > > Can you help?
> > 
> > I planned to add display controller DT node after prefetch engine support [1]
> > is picked up so that the prefetch engine could be enabled together with the
> > display controller.  Just want to avoid a DT that only enables the display
> > controller or bypasses the prefetch engine.  It makes the display controller
> > driver simpler.
> > 
> > [1] https://lore.kernel.org/all/20251027-imx8-dc-prefetch-v5-0-4ecb6c6d4941@xxxxxxx/
> 
> That series is from October 2025, is there anything blocking to move it
> forward?

It lacks a Reviewed-by tag(at least a Acked-by tag) from a drm-misc committer
for every driver patch in that series.  Also, it seems that Marek(Cc'ed) is
not a big fan of [1](See i.MX95 display support discussion[2]).

[2] https://lore.kernel.org/dri-devel/aiZzxhljfyYQ68Gl@raspi/

> 
> Francesco
> 
> 
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-- 
Regards,
Liu Ying