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

[Delphine_CC_Chiu/WYHQ/Wiwynn]

> -----Original Message-----
> From: Andrew Jeffery <andrew at codeconstruct.com.au>
> Sent: Monday, September 16, 2024 11:05 AM
> To: Delphine_CC_Chiu/WYHQ/Wiwynn <Delphine_CC_Chiu at wiwynn.com>;
> patrick at stwcx.xyz; Rob Herring <robh at kernel.org>; Krzysztof Kozlowski
> <krzk+dt at kernel.org>; Conor Dooley <conor+dt at kernel.org>; Joel Stanley
> <joel at jms.id.au>
> Cc: Ricky CX Wu <ricky.cx.wu.wiwynn at gmail.com>;
> devicetree at vger.kernel.org; linux-arm-kernel at lists.infradead.org;
> linux-aspeed at lists.ozlabs.org; linux-kernel at vger.kernel.org
> Subject: Re: [PATCH v1 2/2] ARM: dts: aspeed: yosemite4: Add gpio pca9506
> for CPLD IOE
> 
>  [External Sender]
> 
>  [External Sender]
> 
> On Fri, 2024-09-13 at 03:26 +0000, Delphine_CC_Chiu/WYHQ/Wiwynn wrote:
> >
> > > -----Original Message-----
> > > From: Delphine_CC_Chiu/WYHQ/Wiwynn
> > > Sent: Friday, September 13, 2024 10:08 AM
> > > To: Andrew Jeffery <andrew at codeconstruct.com.au>;
> > > Delphine_CC_Chiu/WYHQ/Wiwynn <Delphine_CC_Chiu at wiwynn.com>;
> > > patrick at stwcx.xyz; Rob Herring <robh at kernel.org>; Krzysztof
> > > Kozlowski <krzk+dt at kernel.org>; Conor Dooley <conor+dt at kernel.org>;
> > > Joel Stanley <joel at jms.id.au>
> > > Cc: Ricky CX Wu <ricky.cx.wu.wiwynn at gmail.com>;
> > > devicetree at vger.kernel.org; linux-arm-kernel at lists.infradead.org;
> > > linux-aspeed at lists.ozlabs.org; linux-kernel at vger.kernel.org
> > > Subject: RE: [PATCH v1 2/2] ARM: dts: aspeed: yosemite4: Add gpio
> > > pca9506 for CPLD IOE
> > >
> > >
> > >
> > > > -----Original Message-----
> > > > From: Andrew Jeffery <andrew at codeconstruct.com.au>
> > > > Sent: Thursday, September 12, 2024 10:11 AM
> > > > To: Delphine_CC_Chiu/WYHQ/Wiwynn
> <Delphine_CC_Chiu at wiwynn.com>;
> > > > patrick at stwcx.xyz; Rob Herring <robh at kernel.org>; Krzysztof
> > > > Kozlowski <krzk+dt at kernel.org>; Conor Dooley
> > > > <conor+dt at kernel.org>; Joel Stanley <joel at jms.id.au>
> > > > Cc: Ricky CX Wu <ricky.cx.wu.wiwynn at gmail.com>;
> > > > devicetree at vger.kernel.org; linux-arm-kernel at lists.infradead.org;
> > > > linux-aspeed at lists.ozlabs.org; linux-kernel at vger.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 at gmail.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.
> >
> > Hi Andrew,
> >
> > I tried to add "facebook,pca9506" in the compatible list of
> > gpio-pca95xx binding and add compatible = "facebook,pca9506",
> > "nxp,pca9506" but got following failed
> > messages:
> >     gpio at 21: compatible: 'oneOf' conditional failed, one must be fixed:
> >         ['facebook,pca9506', 'nxp,pca9506'] is too long
> >         'diodes,pi4ioe5v6534q' was expected
> >         'nxp,pcal6534' was expected
> >         from schema $id:
> > https://urldefense.com/v3/__http://devicetree.org/schemas/gpio/gpio-pc
> >
> a95xx.yaml*__;Iw!!J63qqgXj!Kl4qHs-c0EOBPmv3aoSPNoOI4ryQ07GHCiaFIZkn7
> dH
> > -aY_50bsOoS3ZmF1bQpVt0Z_pdKANopTut-o4CHzlWWR_ya0$
> > Would like to ask do you have any suggestions? Thanks.
> 
> Mmm, maybe it's best if we leave the compatible as just 'nxp,pca9506'
> for now, but if you do discover quirks then we can consider this again.
> 
> Andrew
Hi Andrew,
Thanks for your reply.
I'll keep these patches at v1. Thanks.