linux-kernel - Re: [PATCH v2 3/6] arm64: dts: fsl: Add device tree for S32V234-EVB

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Date:   Tue, 20 Aug 2019 16:38:34 +0000
From:   Stefan-gabriel Mirea <stefan-gabriel.mirea@....com>
To:     Shawn Guo <shawnguo@...nel.org>
CC:     "corbet@....net" <corbet@....net>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "catalin.marinas@....com" <catalin.marinas@....com>,
        "will@...nel.org" <will@...nel.org>, Leo Li <leoyang.li@....com>,
        "jslaby@...e.com" <jslaby@...e.com>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Cosmin Stefan Stoica <cosmin.stoica@....com>,
        Dan Nica <dan.nica@....com>,
        Larisa Ileana Grigore <larisa.grigore@....com>
Subject: Re: [PATCH v2 3/6] arm64: dts: fsl: Add device tree for S32V234-EVB

Hello Shawn,

Thank you for your suggestions!

On 8/19/2019 11:58 AM, Shawn Guo wrote:
> On Fri, Aug 09, 2019 at 11:29:12AM +0000, Stefan-gabriel Mirea wrote:
>>  .../boot/dts/freescale/fsl-s32v234-evb.dts    |  24 ++++
> 
> The 'fsl-' prefix can be saved here, so that we can distinguish three
> families by starting string: imx??? for i.MX, fsl-??? for LayerScape,
> and s32??? for S32.

All right, I will remove the prefixes.

>> +     model = "Freescale S32V234";
> 
> The 'model' is usually used in board level DTS to describe the board.

I will delete the 'model' property from fsl-s32v234.dtsi and add a
suitable one in fsl-s32v234-evb.dts.

>> +             };
> 
> Please have a newline between nodes.
> 
>> +             cpu1: cpu@1 {

I've got it.

>> +                             interrupts = <0 59 1>;
> 
> Please use GIC_SPI and IRQ_TYPE_xxx defines to make it more readable.

I will use GIC_SPI/GIC_PPI and IRQ_TYPE_xxx/GIC_CPU_MASK_xxx where
applicable.

>> +
>> +     timer {
>> +             compatible = "arm,armv8-timer";
>> +             interrupts = <1 13 0xf08>,
>> +                          <1 14 0xf08>,
>> +                          <1 11 0xf08>,
>> +                          <1 10 0xf08>;
>> +             /* clock-frequency might be modified by u-boot, depending on the
>> +              * chip version.
>> +              */
>> +             clock-frequency = <10000000>;
>> +     };
>> +
>> +     gic: interrupt-controller@...01000 {
>> +             compatible = "arm,cortex-a15-gic", "arm,cortex-a9-gic";
>> +             #interrupt-cells = <3>;
>> +             #address-cells = <0>;
>> +             interrupt-controller;
>> +             reg = <0 0x7d001000 0 0x1000>,
>> +                   <0 0x7d002000 0 0x2000>,
>> +                   <0 0x7d004000 0 0x2000>,
>> +                   <0 0x7d006000 0 0x2000>;
>> +             interrupts = <1 9 0xf04>;
>> +     };
> 
> We usually put these core platform devices prior to 'soc' node.

Sure, I will move the 'timer' and 'interrupt-controller' nodes right
before 'soc'.

Regards,
Stefan