linux-kernel - RE: [PATCH v1 2/2] ARM: dts: aspeed: yosemite4: Add gpio pca9506 for CPLD IOE

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Message-ID:
 <TYZPR04MB5853B6611AF9AA5C3E5AE778D6652@TYZPR04MB5853.apcprd04.prod.outlook.com>
Date: Fri, 13 Sep 2024 02:08:05 +0000
From: Delphine_CC_Chiu/WYHQ/Wiwynn <Delphine_CC_Chiu@...ynn.com>
To: Andrew Jeffery <andrew@...econstruct.com.au>, Delphine_CC_Chiu/WYHQ/Wiwynn
	<Delphine_CC_Chiu@...ynn.com>, "patrick@...cx.xyz" <patrick@...cx.xyz>, Rob
 Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor
 Dooley <conor+dt@...nel.org>, Joel Stanley <joel@....id.au>
CC: Ricky CX Wu <ricky.cx.wu.wiwynn@...il.com>, "devicetree@...r.kernel.org"
	<devicetree@...r.kernel.org>, "linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "linux-aspeed@...ts.ozlabs.org"
	<linux-aspeed@...ts.ozlabs.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v1 2/2] ARM: dts: aspeed: yosemite4: Add gpio pca9506 for
 CPLD IOE



> -----Original Message-----
> From: Andrew Jeffery <andrew@...econstruct.com.au>
> Sent: Thursday, September 12, 2024 10:11 AM
> To: Delphine_CC_Chiu/WYHQ/Wiwynn <Delphine_CC_Chiu@...ynn.com>;
> patrick@...cx.xyz; Rob Herring <robh@...nel.org>; Krzysztof Kozlowski
> <krzk+dt@...nel.org>; Conor Dooley <conor+dt@...nel.org>; Joel Stanley
> <joel@....id.au>
> Cc: Ricky CX Wu <ricky.cx.wu.wiwynn@...il.com>;
> devicetree@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> linux-aspeed@...ts.ozlabs.org; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH v1 2/2] ARM: dts: aspeed: yosemite4: Add gpio pca9506
> for CPLD IOE
> 
>  [External Sender]
> 
>  [External Sender]
> 
> On Tue, 2024-09-10 at 13:47 +0800, Delphine CC Chiu wrote:
> > From: Ricky CX Wu <ricky.cx.wu.wiwynn@...il.com>
> >
> > We use CPLD to emulate gpio pca9506 I/O expander on each server
> > boards.
> > Therefore, add pca9506 to probe driver for the CPLD I/O expander.
> 
> I think it might be best if you add your own compatible to the list in the
> gpio-pca95xx binding just in case there are some behavioural quirks of your
> CPLD implementation? Not sure if this should be "facebook,pca9506" or
> "wywinn,pca9506", but assuming facebook, from there you can specify
> 
>     compatible = "facebook,pca9506", "nxp,pca9506";
> 
> This allows you to add the quirks to the driver as required in the future through
> the more-specific compatible.
> 
> Andrew

Hi Andrew,

Thanks for the review.
I'll add the "facebook,pca9506" in gpio-pca95xx binding in next version of patches.