linux-kernel - Re: [PATCH 04/14] media: dt-bindings: media: rockchip,px30-vip: allow for different variants

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Date: Fri, 23 Feb 2024 18:56:20 +0000
From: Conor Dooley <conor@...nel.org>
To: Michael Riesch <michael.riesch@...fvision.net>
Cc: Mehdi Djait <mehdi.djait.k@...il.com>,
	Théo Lebrun <theo.lebrun@...tlin.com>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiko Stuebner <heiko@...ech.de>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	linux-media@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH 04/14] media: dt-bindings: media: rockchip,px30-vip:
 allow for different variants

On Fri, Feb 23, 2024 at 08:03:20AM +0100, Michael Riesch wrote:
> Hi Conor,
> 
> On 2/20/24 19:58, Conor Dooley wrote:
> > Hey,
> > 
> > On Tue, Feb 20, 2024 at 10:39:14AM +0100, Michael Riesch wrote:
> >> Move the documentation of clocks and resets to a allOf: structure in order
> >> to allow for different variants of the IP block.
> >>
> >> Signed-off-by: Michael Riesch <michael.riesch@...fvision.net>
> >> ---
> >>  .../bindings/media/rockchip,px30-vip.yaml          | 58 ++++++++++++++--------
> >>  1 file changed, 37 insertions(+), 21 deletions(-)
> >>
> >> diff --git a/Documentation/devicetree/bindings/media/rockchip,px30-vip.yaml b/Documentation/devicetree/bindings/media/rockchip,px30-vip.yaml
> >> index 675a1ea47210..7168f166798c 100644
> >> --- a/Documentation/devicetree/bindings/media/rockchip,px30-vip.yaml
> >> +++ b/Documentation/devicetree/bindings/media/rockchip,px30-vip.yaml
> >> @@ -24,32 +24,16 @@ properties:
> >>    interrupts:
> >>      maxItems: 1
> >>  
> >> -  clocks:
> >> -    items:
> >> -      - description: ACLK
> >> -      - description: HCLK
> >> -      - description: PCLK
> >> -
> >> -  clock-names:
> >> -    items:
> >> -      - const: aclk
> >> -      - const: hclk
> >> -      - const: pclk
> >> +  clocks: true
> >> +
> >> +  clock-names: true
> > 
> > This is, unfortunately, not how we like multiple soc support to be
> > handled. Instead, the widest constraints are added at the top level
> > and constrained by the allOf. If none of the names etc are shared, at
> > least the widest constraints for minItems and maxItems should be able to
> > be here.
> 
> Just to make sure I got it right:
> 
> clocks:
>   minItems: 3
>   maxItems: 4

>   items:
>     - const: aclk
>     - const: hclk

If the names themselves are all different, I wouldn't bother with this,
and just constrain the numbers at the top level.
Otherwise ye, on the right track here.

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