linux-kernel - Re: [PATCH 1/3] media: rockchip: Introduce the rkvdec2 driver

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Date: Sat, 15 Jun 2024 15:44:32 -0400
From: Detlev Casanova <detlev.casanova@...labora.com>
To: linux-kernel@...r.kernel.org, Diederik de Haas <didi.debian@...ow.org>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
 Heiko Stuebner <heiko@...ech.de>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Sebastian Reichel <sebastian.reichel@...labora.com>,
 Dragan Simic <dsimic@...jaro.org>, Alexey Charkov <alchark@...il.com>,
 Cristian Ciocaltea <cristian.ciocaltea@...labora.com>,
 Andy Yan <andy.yan@...k-chips.com>, linux-media@...r.kernel.org,
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-rockchip@...ts.infradead.org, linux-staging@...ts.linux.dev
Subject: Re: [PATCH 1/3] media: rockchip: Introduce the rkvdec2 driver

On Saturday, June 15, 2024 4:51:38 A.M. EDT Diederik de Haas wrote:
> On Saturday, 15 June 2024 03:56:27 CEST Detlev Casanova wrote:
> > This driver supports the second generation of the Rockchip Video
> > decoder, also known as vdpu34x.
> > It is currently only used on the RK3588(s) SoC.
> > ...
> > The core supports H264, HEVC, VP9 and AVS2 decoding but this driver
> > currently only supports H264.
> > ...
> > The decision to make a different driver is mainly because rkvdec2 has
> > more features and can work with multiple cores.
> 
> https://wiki.pine64.org/wiki/Quartz64_Development#Upstreaming_Status uses
> both the rkvdec2 and vdpu346 words and I *assumed* that meant that the
> Quartz64 Model A and B would use rkvdec2. The Q64-A and -B are rk3566
> devices though.
> 
> So is this just an (unfortunate) use of the same words or is that wiki page
> just wrong ... or better yet: does rkvdec2 support RK356x too?

Yes, the vdpu34x decoder on rk356x socs should be supported by this driver but 
I don't have boards to test that unfortunately.

This might also be used on future rockchip releases like the rk3576. But they 
all have their own adaptations. If you can test it on rk3568 based hardware, 
I'll happily add a compatible for it.

> Cheers,
>   Diederik


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