linux-kernel - RE: [PATCH 3/7] arm64: dts: imx95-19x19-evk: Add audio related nodes

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Message-ID:
 <AM6PR04MB5941835C8FC15609AC00D29F88DC2@AM6PR04MB5941.eurprd04.prod.outlook.com>
Date: Tue, 2 Jul 2024 00:02:12 +0000
From: Peng Fan <peng.fan@....com>
To: Frank Li <frank.li@....com>
CC: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, Sascha
 Hauer <s.hauer@...gutronix.de>, Pengutronix Kernel Team
	<kernel@...gutronix.de>, Fabio Estevam <festevam@...il.com>, "open list:OPEN
 FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@...r.kernel.org>,
	"open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" <imx@...ts.linux.dev>,
	"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
	<linux-arm-kernel@...ts.infradead.org>, open list
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 3/7] arm64: dts: imx95-19x19-evk: Add audio related nodes

> Subject: Re: [PATCH 3/7] arm64: dts: imx95-19x19-evk: Add audio
> related nodes
> 
> On Fri, Jun 28, 2024 at 12:03:27AM +0000, Peng Fan wrote:
> > > Subject: [PATCH 3/7] arm64: dts: imx95-19x19-evk: Add audio
> related
> > > nodes
> > >
> > > Add sai1, sai2. Add i2c4 and wm8962 and other dependent nodes.
> > >
> > > Signed-off-by: Frank Li <Frank.Li@....com>
> > > ---
> > >  .../boot/dts/freescale/imx95-19x19-evk.dts    | 238
> > > ++++++++++++++++++
> > >  1 file changed, 238 insertions(+)
> > >
> > > diff --git a/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
> > > b/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
> > > index d14a54ab4fd47..660e623f4f964 100644
> > > --- a/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
> > > +++ b/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
> > > @@ -17,6 +17,11 @@ aliases {
> > >  		serial0 = &lpuart1;
> > >  	};
> > >
> ...
> > > +			     0x0000 /* 4:FN_DMICCDAT */
> > > +			     0x0000 /* 5:Default */
> > > +			   >;
> > > +	};
> > > +
> > > +	i2c4_gpio_expander_21: gpio@21 {
> >
> > Use gpio-expander@21?
> > It is easy to duplicate the node if other i2c bus also has one.
> 
> It should be fine, parent node is difference. gpio-expander@21 can't
> resolve your problem.
> 
> i2c2
> {
> 	gpio-expander@21 {};
> }
> 
> i2c3
> {
> 	gpio-expander@21 {};
> }
> 
> It should be same situation as gpio@21.
> 
> DT should allow the same name under difference parent.

As I recall, there is build error of duplicated node.

Regards,
Peng.

> 
> Frank
> 
> >
> > Regards,
> > Peng.
> >