linux-kernel - Re: [PATCH v4 1/2] arm64: dts: fsl: pico-pi: Add a device tree for the PICO-PI-IMX8M

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Date:   Fri, 19 Jul 2019 15:04:05 +0300
From:   Daniel Baluta <daniel.baluta@...il.com>
To:     Fabio Estevam <festevam@...il.com>
Cc:     andradanciu1997 <andradanciu1997@...il.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Sascha Hauer <kernel@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        Andrey Smirnov <andrew.smirnov@...il.com>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Ping Bai <ping.bai@....com>,
        Michal Vokáč <Michal.Vokac@...ft.com>,
        Li Yang <leoyang.li@....com>, sriram.dash@....com,
        Lucas Stach <l.stach@...gutronix.de>,
        Vabhav Sharma <vabhav.sharma@....com>,
        Bhaskar Upadhaya <bhaskar.upadhaya@....com>,
        Pramod Kumar <pramod.kumar_1@....com>, pankaj.bansal@....com,
        Dong Aisheng <aisheng.dong@....com>,
        "Angus Ainslie (Purism)" <angus@...ea.ca>,
        Richard Hu <richard.hu@...hnexion.com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v4 1/2] arm64: dts: fsl: pico-pi: Add a device tree for
 the PICO-PI-IMX8M

On Fri, Jul 19, 2019 at 2:22 PM Fabio Estevam <festevam@...il.com> wrote:
>
> Hi Andra,
>
> On Fri, Jul 19, 2019 at 7:48 AM andradanciu1997
> <andradanciu1997@...il.com> wrote:
>
> > +       pmic: pmic@4b {
> > +               reg = <0x4b>;
> > +               compatible = "rohm,bd71837";
> > +               /* PMIC BD71837 PMIC_nINT GPIO1_IO12 */
> > +               pinctrl-names = "default";
> > +               pinctrl-0 = <&pinctrl_pmic>;
> > +               clocks = <&pmic_osc>;
> > +               clock-names = "osc";
> > +               clock-output-names = "pmic_clk";
> > +               interrupt-parent = <&gpio1>;
> > +               interrupts = <3 GPIO_ACTIVE_LOW>;
> > +               interrupt-names = "irq";
> > +
> > +               regulators {
> > +                       #address-cells = <1>;
> > +                       #size-cells = <0>;
>
> #address-cells and  #size-cells are not needed and they cause warnings with W=1:
>
>   DTC     arch/arm64/boot/dts/freescale/imx8mq-pico-pi.dtb
> arch/arm64/boot/dts/freescale/imx8mq-pico-pi.dts:77.14-196.5: Warning
> (avoid_unnecessary_addr_size):
> /soc@...us@...00000/i2c@...20000/pmic@...regulators: unnecessary
> #address-cells/#size-cells without "ranges" or child "reg" property
>
> Please remove them.

Thanks Fabio for review, we learned something new today :).

Daniel.