Re: [PATCH 2/4] media: dt-binding: media: Document rk3588’s vepu121

[Heiko Stübner]

Am Donnerstag, 21. März 2024, 09:14:51 CET schrieb Krzysztof Kozlowski:
> On 20/03/2024 18:37, Emmanuel Gil Peyrot wrote:
> > This encoder-only device is present four times on this SoC, and should
> > support everything the rk3568 vepu supports (so JPEG, H.264 and VP8
> > encoding).
> > 
> > Signed-off-by: Emmanuel Gil Peyrot <linkmauve@xxxxxxxxxxxx>
> > ---
> >  .../devicetree/bindings/media/rockchip,rk3568-vepu.yaml          | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/media/rockchip,rk3568-vepu.yaml b/Documentation/devicetree/bindings/media/rockchip,rk3568-vepu.yaml
> > index 9d90d8d0565a..947ad699cc5e 100644
> > --- a/Documentation/devicetree/bindings/media/rockchip,rk3568-vepu.yaml
> > +++ b/Documentation/devicetree/bindings/media/rockchip,rk3568-vepu.yaml
> > @@ -17,6 +17,7 @@ properties:
> >    compatible:
> >      enum:
> >        - rockchip,rk3568-vepu
> > +      - rockchip,rk3588-vepu121
> 
> What is 121?

That is the strange naming of the ip block inside the soc.

I.e. the rk3588 TRM lists a number of different video encoders and decoders:
- VDPU121 is decoding h.263 and mpeg1,2,4
- VDPU381 is decoding h.265, h.264 and some more
- VDPU720 is decoding jpeg
- VDPU981 decodes AV1
- VEPU121 is the jpeg encoder above
- VEPU580 encodes h.264 and h.265

Each of those are separate IP blocks with their own io-memory, their own
interrupts and their own iommus, etc.


Heiko