Hi,

On 2024/11/25 17:33, Liu Ying wrote:

i.MX8qxp Display Controller display engine consists of all processing
units that operate in a display clock domain.  Add minimal feature
support with FrameGen and TCon so that the engine can output display
timings.  The display engine driver as a master binds FrameGen and
TCon drivers as components.  While at it, the display engine driver
is a component to be bound with the upcoming DRM driver.

Signed-off-by: Liu Ying <victor.liu@nxp.com>
---
v4:
* Use regmap to define register map for all registers. (Dmitry)
* Use regmap APIs to access registers. (Dmitry)
* Inline some small functions. (Dmitry)

Why?

Its seems that the switch to regmap APIs is not very necessary,
as ioremap/writel/readl are simple enough and easier to use.

Isn't that this just introduce an intermediate layer? It's okay
for display bridges/panels that behind I2C bus or SPI bus. But
then, why drm/msm still haven't be converted to use the regmap
APIs ?

Just a few questions, has no opinions to your patch.

-- 
Best regards,
Sui