linux-kernel - Re: [PATCH v4 06/14] MIPS: jz4740: DTS: Add nodes for ingenic pinctrl and gpio drivers

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Date:   Mon, 03 Apr 2017 12:20:12 +0200
From:   Paul Cercueil <paul@...pouillou.net>
To:     Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Alexandre Courbot <gnurou@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Maarten ter Huurne <maarten@...ewalker.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Paul Burton <paul.burton@...tec.com>, james.hogan@...tec.com,
        linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mips@...ux-mips.org,
        linux-mmc@...r.kernel.org, linux-mtd@...ts.infradead.org,
        linux-pwm@...r.kernel.org, linux-fbdev@...r.kernel.org
Subject: Re: [PATCH v4 06/14] MIPS: jz4740: DTS: Add nodes for ingenic pinctrl
 and gpio drivers

Hi,

Le 2017-04-03 11:57, Sergei Shtylyov a écrit :
> Hello!
> 
> On 4/2/2017 11:42 PM, Paul Cercueil wrote:
> 
>> For a description of the pinctrl devicetree node, please read
>> Documentation/devicetree/bindings/pinctrl/ingenic,pinctrl.txt
>> 
>> For a description of the gpio devicetree nodes, please read
>> Documentation/devicetree/bindings/gpio/ingenic,gpio.txt
>> 
>> Signed-off-by: Paul Cercueil <paul@...pouillou.net>
> [...]
> 
>> diff --git a/arch/mips/boot/dts/ingenic/jz4740.dtsi 
>> b/arch/mips/boot/dts/ingenic/jz4740.dtsi
>> index 3e1587f1f77a..9c23c877fc34 100644
>> --- a/arch/mips/boot/dts/ingenic/jz4740.dtsi
>> +++ b/arch/mips/boot/dts/ingenic/jz4740.dtsi
>> @@ -55,6 +55,67 @@
>>  		clock-names = "rtc";
>>  	};
>> 
>> +	pinctrl: ingenic-pinctrl@...10000 {
> 
>    The node name should be generic, so please rename it to something
> like "pin-controller@..."

OK.

>> +		compatible = "ingenic,jz4740-pinctrl";
>> +		reg = <0x10010000 0x400>;
>> +
>> +		gpa: gpio-controller@0 {
> 
>    The name should be just "gpio@0", according to ePAPR and its
> successor spec. Although, using the <unit-address> without the "reg"
> prop isn't allowed either...

ePAPR says: "If the node has no reg property, the unit-address may be
omitted if the node name alone differentiates the node from other nodes 
at
the same level in the tree."

I could use 'gpio@...k-a', it is allowed by the spec. Or do you prefer 
'gpio@0'?

> MBR, Sergei

I'll wait from some feedback on the other patches then send a v5.

Thanks,
-Paul