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Message-ID: <fa0ae368-7383-4d50-b924-67f10af75ffd@linaro.org>
Date: Wed, 13 Mar 2024 08:25:47 +0100
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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
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To: Xu Yang <xu.yang_2@nxp.com>, Rob Herring <robh@kernel.org>
Cc: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
 "krzysztof.kozlowski+dt@linaro.org" <krzysztof.kozlowski+dt@linaro.org>,
 "shawnguo@kernel.org" <shawnguo@kernel.org>,
 "conor+dt@kernel.org" <conor+dt@kernel.org>,
 "s.hauer@pengutronix.de" <s.hauer@pengutronix.de>,
 "kernel@pengutronix.de" <kernel@pengutronix.de>,
 "festevam@gmail.com" <festevam@gmail.com>, dl-linux-imx <linux-imx@nxp.com>,
 "peter.chen@kernel.org" <peter.chen@kernel.org>, Jun Li <jun.li@nxp.com>,
 "linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
 "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
 "linux-arm-kernel@lists.infradead.org"
 <linux-arm-kernel@lists.infradead.org>,
 "imx@lists.linux.dev" <imx@lists.linux.dev>,
 "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
References: <20240312091703.1220649-1-xu.yang_2@nxp.com>
 <20240312091703.1220649-5-xu.yang_2@nxp.com>
 <20240312145035.GA2204647-robh@kernel.org>
 <DU2PR04MB8822976F9F052E18D7951FA48C2A2@DU2PR04MB8822.eurprd04.prod.outlook.com>
From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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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.


Best regards,
Krzysztof