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From: Marco Felsch <m.felsch@pengutronix.de>
To: Gilles Doffe <gilles.doffe@savoirfairelinux.com>
Cc: "mark rutland" <mark.rutland@arm.com>,
	devicetree <devicetree@vger.kernel.org>,
	shawnguo <shawnguo@kernel.org>,
	"s hauer" <s.hauer@pengutronix.de>,
	rennes <rennes@savoirfairelinux.com>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	robh+dt <robh+dt@kernel.org>, linux-imx <linux-imx@nxp.com>,
	kernel <kernel@pengutronix.de>,
	"Jérome Oufella" <jerome.oufella@savoirfairelinux.com>,
	festevam <festevam@gmail.com>,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v2] arm: dts: imx6qdl: add gpio expander pca9535
Date: Thu, 12 Sep 2019 12:12:40 +0200
Message-ID: <20190912101240.ml5jmdei5rvzesap@pengutronix.de> (raw)
In-Reply-To: <978100557.7721358.1568282514403.JavaMail.zimbra@savoirfairelinux.com>

Hi Gilles,

On 19-09-12 06:01, Gilles Doffe wrote:
> Hi Marco,
> 
> Thanks for your reply and sorry about the delay.

No worries ;)

> ----- Le 22 Juil 19, à 9:53, Marco Felsch m.felsch@pengutronix.de a écrit :
> 
> > Hi Gilles,
> > 
> > can you adapt the patch title, I assumed that the base dtsi is adding a
> > gpio-expander which makes no sense.
> 
> My first intent was to add the gpio-expander pca9535 into the imx6q-rex-pro.dts and in a future imx6qp-rex-ultra.dts
> However I noticed that the sgtl5000 was already in the dtsi.
> It is maybe due to the fact that like the pca9535, the sgtl5000 is present on the baseboard not on the SOM.
> Thus I guess that baseboard stuff common to all rex SOM should be in imx6qdl-rex.dtsi and not in the dts.
> Does-it seem correct to you ?

Yes this is correct what Shawn and I mean is that you should adapt the
commit title. Shawn already give you an example.

> > 
> > On 19-07-19 12:46, Gilles DOFFE wrote:
> >> The pca9535 gpio expander is present on the Rex baseboard, but missing
> >> from the dtsi.
> >> 
> >> Add the new gpio controller and the associated interrupt line
> >> MX6QDL_PAD_NANDF_CS3__GPIO6_IO16.
> >> 
> >> Signed-off-by: Gilles DOFFE <gilles.doffe@savoirfairelinux.com>
> >> ---
> > 
> > Having a changelog would be nice too.
> > 
> >>  arch/arm/boot/dts/imx6qdl-rex.dtsi | 19 +++++++++++++++++++
> >>  1 file changed, 19 insertions(+)
> >> 
> >> diff --git a/arch/arm/boot/dts/imx6qdl-rex.dtsi
> >> b/arch/arm/boot/dts/imx6qdl-rex.dtsi
> >> index 97f1659144ea..b517efb22fcb 100644
> >> --- a/arch/arm/boot/dts/imx6qdl-rex.dtsi
> >> +++ b/arch/arm/boot/dts/imx6qdl-rex.dtsi
> >> @@ -136,6 +136,19 @@
> >>  		compatible = "atmel,24c02";
> >>  		reg = <0x57>;
> >>  	};
> >> +
> >> +	pca9535: gpio8@27 {
> >> +		compatible = "nxp,pca9535";
> >> +		reg = <0x27>;
> > 
> > The i2c devices are orderd by their i2c-addresses starting from the
> > lowest.
> >
> 
> Ack.
> 
> >> +		gpio-controller;
> >> +		#gpio-cells = <2>;
> >> +		pinctrl-names = "default";
> >> +		pinctrl-0 = <&pinctrl_pca9535>;
> >> +		interrupt-parent = <&gpio6>;
> >> +		interrupts = <16 IRQ_TYPE_LEVEL_LOW>;
> >> +		interrupt-controller;
> >> +		#interrupt-cells = <2>;

As you pointed out above this device isn't available on the
imx6dl-rex-basic? You should add: 'status = "disabled";' if this is the
case.

Regards,
  Marco

> >> +	};
> >>  };
> >>  
> >>  &i2c3 {
> >> @@ -237,6 +250,12 @@
> >>  			>;
> >>  		};
> >>  
> >> +		pinctrl_pca9535: pca9535 {
> >> +			fsl,pins = <
> >> +				MX6QDL_PAD_NANDF_CS3__GPIO6_IO16	0x00017059
> > 
> > The pinmux below don't use the leading zero's if you are the first I
> > would drop that.
> > 
> > Regards,
> >  Marco
> >
> 
> Ack.
> 
> Regards,
> Gilles
> 

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Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-19 10:46 Gilles DOFFE
2019-07-22  7:53 ` Marco Felsch
2019-07-23  8:02   ` Shawn Guo
2019-09-12 10:01   ` Gilles Doffe
2019-09-12 10:12     ` Marco Felsch [this message]
2019-09-13  8:38       ` Gilles Doffe

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