linux-kernel - Re: [PATCH v8 17/23] dt-bindings: crypto: meson: correct clk and remove second interrupt line

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Message-ID: <20240708103330.w2krusjlyoucsvcn@cab-wsm-0029881.sigma.sbrf.ru>
Date: Mon, 8 Jul 2024 10:33:40 +0000
From: Alexey Romanov <avromanov@...utedevices.com>
To: Rob Herring <robh@...nel.org>
CC: "neil.armstrong@...aro.org" <neil.armstrong@...aro.org>,
	"clabbe@...libre.com" <clabbe@...libre.com>, "herbert@...dor.apana.org.au"
	<herbert@...dor.apana.org.au>, "davem@...emloft.net" <davem@...emloft.net>,
	"krzysztof.kozlowski+dt@...aro.org" <krzysztof.kozlowski+dt@...aro.org>,
	"conor+dt@...nel.org" <conor+dt@...nel.org>, "khilman@...libre.com"
	<khilman@...libre.com>, "jbrunet@...libre.com" <jbrunet@...libre.com>,
	"martin.blumenstingl@...glemail.com" <martin.blumenstingl@...glemail.com>,
	"vadim.fedorenko@...ux.dev" <vadim.fedorenko@...ux.dev>,
	"linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
	"linux-amlogic@...ts.infradead.org" <linux-amlogic@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, kernel <kernel@...rdevices.ru>
Subject: Re: [PATCH v8 17/23] dt-bindings: crypto: meson: correct clk and
 remove second interrupt line

Hi Rob,

thank you for the review.

On Mon, Jun 10, 2024 at 04:28:27PM -0600, Rob Herring wrote:
> On Fri, Jun 07, 2024 at 05:12:36PM +0300, Alexey Romanov wrote:
> > GXL and newer SoC's uses the DMA engine (not blkmv) for crypto HW.
> > Crypto HW doesn't actually use the blkmv clk. At RTL level, crypto
> > engine is hard weired to a clk81 (CLKID_CLK81).
> 
> typo.
> 
> > 
> > Also, GXL crypto IP isn't to seconnd interrput line. So we must
> 
> 2 more typos. Spell checkers exist. Use them instead of me please.
> 
> I think you forgot the word 'connected' too.

Yep, sorry, I will fix all typos.

> 
> > remove it from dt-bindings.
> 
> 
> So did this binding not work at all? 

Yes.

> Are there any users? 

No.

> You need a bit 
> more justification for an ABI breaking change.

I will add more clarification information in commit message in V9.

> 
> > 
> > Fixes: 7f7d115dfb51 ("dt-bindings: crypto: Add DT bindings
> > documentation for amlogic-crypto")
> 
> This line should not be wrapped.
> > 
> 
> Drop the blank line.
> 
> > Signed-off-by: Alexey Romanov <avromanov@...utedevices.com>
> > ---
> >  .../bindings/crypto/amlogic,gxl-crypto.yaml          | 12 +++++++-----
> >  1 file changed, 7 insertions(+), 5 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/crypto/amlogic,gxl-crypto.yaml b/Documentation/devicetree/bindings/crypto/amlogic,gxl-crypto.yaml
> > index 948e11ebe4ee..aff6f3234dc9 100644
> > --- a/Documentation/devicetree/bindings/crypto/amlogic,gxl-crypto.yaml
> > +++ b/Documentation/devicetree/bindings/crypto/amlogic,gxl-crypto.yaml
> > @@ -20,13 +20,15 @@ properties:
> >    interrupts:
> >      items:
> >        - description: Interrupt for flow 0
> > -      - description: Interrupt for flow 1
> >  
> >    clocks:
> >      maxItems: 1
> >  
> >    clock-names:
> > -    const: blkmv
> > +    const: clk81
> 
> Clocks are supposed be named local to the block like what function or 
> part of the block they clock. This sounds like something global. 
> 
> With only 1 clock, I'd just drop the name altogether.

I think I have to remove clock-names field in V9.

> 
> > +
> > +  power-domains:
> > +    maxItems: 1
> >  
> >  required:
> >    - compatible
> > @@ -46,7 +48,7 @@ examples:
> >      crypto: crypto-engine@...3e000 {
> >          compatible = "amlogic,gxl-crypto";
> >          reg = <0xc883e000 0x36>;
> > -        interrupts = <GIC_SPI 188 IRQ_TYPE_EDGE_RISING>, <GIC_SPI 189 IRQ_TYPE_EDGE_RISING>;
> > -        clocks = <&clkc CLKID_BLKMV>;
> > -        clock-names = "blkmv";
> > +        interrupts = <GIC_SPI 188 IRQ_TYPE_EDGE_RISING>;
> > +        clocks = <&clkc CLKID_CLK81>;
> > +        clock-names = "clk81";
> >      };
> > -- 
> > 2.34.1
> > 

-- 
Thank you,
Alexey