linux-kernel - Re: [PATCH v1 2/3] arm64: dts: freescale: imx8mp-verdin: add labels to som nodes

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Message-ID: <20240924170254.yx4v2m23evppfa6l@joaog-nb>
Date: Tue, 24 Sep 2024 14:02:54 -0300
From: João Paulo Gonçalves <jpaulo.silvagoncalves@...il.com>
To: Frank Li <Frank.li@....com>
Cc: Francesco Dolcini <francesco@...cini.it>, 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>,
	João Paulo Gonçalves <joao.goncalves@...adex.com>,
	devicetree@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Francesco Dolcini <francesco.dolcini@...adex.com>
Subject: Re: [PATCH v1 2/3] arm64: dts: freescale: imx8mp-verdin: add labels
 to som nodes

Hi Frank,

On Tue, Sep 24, 2024 at 11:02:50AM -0400, Frank Li wrote:
> On Tue, Sep 24, 2024 at 01:40:52PM +0200, Francesco Dolcini wrote:
> > From: João Paulo Gonçalves <joao.goncalves@...adex.com>
> >
> > Add labels to ti-ads1015 and fec ethernet mdio node to make it easier to
> > reference them from other nodes.
> >
> > Signed-off-by: João Paulo Gonçalves <joao.goncalves@...adex.com>
> > Signed-off-by: Francesco Dolcini <francesco.dolcini@...adex.com>
> > ---
> >  arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi | 5 +++--
> >  1 file changed, 3 insertions(+), 2 deletions(-)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
> > index a19ad5ee7f79..e9518b7c7aa8 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
> > @@ -320,7 +320,7 @@ &fec {
> >  	pinctrl-0 = <&pinctrl_fec>;
> >  	pinctrl-1 = <&pinctrl_fec_sleep>;
> >
> > -	mdio {
> > +	verdin_eth2_mdio: mdio {
> >  		#address-cells = <1>;
> >  		#size-cells = <0>;
> >
> > @@ -591,11 +591,12 @@ hwmon_temp_module: sensor@48 {
> >  		vs-supply = <&reg_vdd_1v8>;
> >  	};
> >
> > -	adc@49 {
> > +	verdin_som_adc: adc@49 {
> >  		compatible = "ti,ads1015";
> >  		reg = <0x49>;
> >  		#address-cells = <1>;
> >  		#size-cells = <0>;
> > +		#io-channel-cells = <1>;
> 
> Why add this? it is not related with what descript in commit message

The #io-channel-cells property is required to reference the ADC
node as an IIO channel producer in consumer nodes, otherwise, DT check
warnings will occur. I agree that the commit message could be improved,
but I consider this a minor issue. Would it be acceptable to keep it as
is, or would you prefer a v2?

Best Regards,
João Paulo Gonçalves