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Message-ID: <20240411-curvy-satirical-8c50cf79d703@spud>
Date: Thu, 11 Apr 2024 16:18:40 +0100
From: Conor Dooley <conor@...nel.org>
To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: linux-scsi@...r.kernel.org, alim.akhtar@...sung.com,
	avri.altman@....com, bvanassche@....org, robh@...nel.org,
	krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
	peter.wang@...iatek.com, chu.stanley@...il.com, jejb@...ux.ibm.com,
	martin.petersen@...cle.com, lgirdwood@...il.com, broonie@...nel.org,
	matthias.bgg@...il.com, stanley.chu@...iatek.com,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mediatek@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 7/8] dt-bindings: ufs: mediatek,ufs: Document
 additional clocks

On Thu, Apr 11, 2024 at 05:14:34PM +0200, AngeloGioacchino Del Regno wrote:
> Il 11/04/24 17:10, Conor Dooley ha scritto:
> > On Thu, Apr 11, 2024 at 01:42:59PM +0200, AngeloGioacchino Del Regno wrote:
> > > Add additional clocks, used on all MediaTek SoCs' UFSHCI controllers:
> > 
> > I appreciate being told they're on all, rather than it being unsaid and
> > having to ask.
> > 
> 
> You're welcome :-)
> 
> > > some of these clocks are optional and used only for scaling purposes
> > > to save power, or to improve performance in the case of the crypt
> > > clocks.
> > > 
> > > Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> > > ---
> > >   .../devicetree/bindings/ufs/mediatek,ufs.yaml      | 14 +++++++++++++-
> > >   1 file changed, 13 insertions(+), 1 deletion(-)
> > > 
> > > diff --git a/Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml b/Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml
> > > index e2c276da3f2c..21b038db100c 100644
> > > --- a/Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml
> > > +++ b/Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml
> > > @@ -26,11 +26,23 @@ properties:
> > >             - const: mediatek,mt8183-ufshci
> > >     clocks:
> > > -    maxItems: 1
> > > +    minItems: 1
> > 
> > Could you add an itemised list to the clocks property please?
> > 
> 
> Not really... Honestly, I'm not confident that the description will be 100%
> correct for all of them... can we do that at a later time, when I will be
> really that much confident in writing down a proper description for each
> of them?
> 
> The only thing that I'm really sure of is exactly what I wrote in this commit,
> nothing less, nothing more... for now :')

fwiw, my motivation here was a better explanation for what "ufs" means
as a clock. When the block has some "ufs" clock and a "axi" clock it's
kinda clear what they do, but with 7 ufs clocks now, it's not really
clear what the bare "ufs" one actually does.

If you can't provide an itemised list, please set maxitems.
 
> > >     clock-names:
> > > +    minItems: 1
> > >       items:
> > >         - const: ufs
> > > +      - const: ufs-aes
> > 
> > 
> > > +      - const: ufs-tick
> > > +      - const: unipro-sys
> > > +      - const: unipro-tick
> > > +      - const: ufs-sap
> > > +      - const: ufs-tx-symbol
> > > +      - const: ufs-rx-symbol
> > > +      - const: ufs-mem
> > > +      - const: crypt-mux
> > > +      - const: crypt-lp
> > > +      - const: crypt-perf
> > >     phys:
> > >       maxItems: 1
> > > -- 
> > > 2.44.0
> > > 
> 

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