linux-kernel - Re: [PATCH v13 6/8] media: dt-bindings: wave5: add Chips&Media 521c codec IP support

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Message-ID: <20231016134720.GA2650973-robh@kernel.org>
Date:   Mon, 16 Oct 2023 08:47:20 -0500
From:   Rob Herring <robh@...nel.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Sebastian Fricke <sebastian.fricke@...labora.com>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        NXP Linux Team <linux-imx@....com>,
        Conor Dooley <conor+dt@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Jackson Lee <jackson.lee@...psnmedia.com>,
        Hans Verkuil <hverkuil@...all.nl>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Nas Chung <nas.chung@...psnmedia.com>,
        Fabio Estevam <festevam@...il.com>,
        linux-media@...r.kernel.org, Tomasz Figa <tfiga@...omium.org>,
        linux-kernel@...r.kernel.org,
        Nicolas Dufresne <nicolas.dufresne@...labora.com>,
        kernel@...labora.com, Robert Beckett <bob.beckett@...labora.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Darren Etheridge <detheridge@...com>
Subject: Re: [PATCH v13 6/8] media: dt-bindings: wave5: add Chips&Media 521c
 codec IP support

On Thu, Oct 12, 2023 at 03:24:12PM +0200, Krzysztof Kozlowski wrote:
> On 12/10/2023 13:01, Sebastian Fricke wrote:
> > From: Robert Beckett <bob.beckett@...labora.com>
> > 
> > Add bindings for the chips&media wave5 codec driver
> > 
> > Signed-off-by: Robert Beckett <bob.beckett@...labora.com>
> > Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@...labora.com>
> > Signed-off-by: Sebastian Fricke <sebastian.fricke@...labora.com>
> > ---
> >  .../devicetree/bindings/media/cnm,wave5.yaml       | 60 ++++++++++++++++++++++
> >  1 file changed, 60 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/media/cnm,wave5.yaml b/Documentation/devicetree/bindings/media/cnm,wave5.yaml
> > new file mode 100644
> > index 000000000000..b31d34aec05b
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/cnm,wave5.yaml
> > @@ -0,0 +1,60 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/media/cnm,wave5.yaml#
> 
> Filename matching compatible, so: cnm,cm521c-vpu.yaml
> 
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Chips&Media Wave 5 Series multi-standard codec IP
> > +
> > +maintainers:
> > +  - Nas Chung <nas.chung@...psnmedia.com>
> > +  - Jackson Lee <jackson.lee@...psnmedia.com>
> > +
> > +description:
> > +  The Chips&Media WAVE codec IP is a multi format video encoder/decoder
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - cnm,cm521c-vpu
> 
> Can this device be anything else? Why VPU suffix?

It needs an SoC specific compatible (TI something...) as well (or 
instead). Unless there's a public spec with details on how many 
clocks, resets, interrupts, etc. there are.

Rob