linux-kernel - RE: [EXT] Re: [PATCH v8 05/10] dt-bindings: usb: ci-hdrc-usb2-imx: add restrictions for reg, interrupts, clock and clock-names properties

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Date: Wed, 13 Mar 2024 10:31:08 +0000
From: Xu Yang <xu.yang_2@....com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, Rob Herring
	<robh@...nel.org>
CC: "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"krzysztof.kozlowski+dt@...aro.org" <krzysztof.kozlowski+dt@...aro.org>,
	"shawnguo@...nel.org" <shawnguo@...nel.org>, "conor+dt@...nel.org"
	<conor+dt@...nel.org>, "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
	"kernel@...gutronix.de" <kernel@...gutronix.de>, "festevam@...il.com"
	<festevam@...il.com>, dl-linux-imx <linux-imx@....com>,
	"peter.chen@...nel.org" <peter.chen@...nel.org>, Jun Li <jun.li@....com>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "imx@...ts.linux.dev"
	<imx@...ts.linux.dev>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject: RE: [EXT] Re: [PATCH v8 05/10] dt-bindings: usb: ci-hdrc-usb2-imx:
 add restrictions for reg, interrupts, clock and clock-names properties


> 
> On 13/03/2024 03:48, Xu Yang wrote:
> >>> +
> >>> +  # imx7d Soc need one clock
> >>> +  - if:
> >>> +      properties:
> >>> +        compatible:
> >>> +          items:
> >>> +            - const: fsl,imx7d-usb
> >>> +            - const: fsl,imx27-usb
> >>> +    then:
> >>> +      properties:
> >>> +        clocks:
> >>> +          maxItems: 1
> >>> +        clock-names:
> >>> +          maxItems: 1
> >>
> >> What's the name?
> >
> > Can I not specify the name since the macro definition for USB
> 
> But you must specify name or disallow names (: false).
> 
> > controller clock in clock.h is recognizable and the driver doesn't
> 
> header has nothing to do with it
> 
> > get this clock by name rather index?
> 
> Driver does not have to take clocks by names, it does not really matter
> to such discussion. If you provide clock-names, then the name should be
> defined/fixed.

Okay. I get it.

Thanks, 
Xu Yang

> 
> 
> Best regards,
> Krzysztof