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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <855507987.0ifERbkFSE@diego>
Date: Thu, 21 Mar 2024 09:47:39 +0100
From: Heiko Stübner <heiko@...ech.de>
To: Emmanuel Gil Peyrot <linkmauve@...kmauve.fr>,
 linux-kernel@...r.kernel.org,
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
 Philipp Zabel <p.zabel@...gutronix.de>,
 Mauro Carvalho Chehab <mchehab@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, Joerg Roedel <joro@...tes.org>,
 Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
 Sebastian Reichel <sebastian.reichel@...labora.com>,
 Cristian Ciocaltea <cristian.ciocaltea@...labora.com>,
 Dragan Simic <dsimic@...jaro.org>,
 Shreeya Patel <shreeya.patel@...labora.com>,
 Chris Morgan <macromorgan@...mail.com>, Andy Yan <andy.yan@...k-chips.com>,
 Nicolas Frattaroli <frattaroli.nicolas@...il.com>,
 linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 iommu@...ts.linux.dev
Subject:
 Re: [PATCH 2/4] media: dt-binding: media: Document
 rk3588’s vepu121

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@...kmauve.fr>
> > ---
> >  .../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