linux-kernel - Re: [PATCH] arm64: dts: renesas: rzg3s-smarc: Add gpio keys

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Message-ID: <a1ef3681-a3c9-47fd-ad9e-4e14182b1c1d@tuxon.dev>
Date: Sat, 13 Jan 2024 12:13:59 +0200
From: claudiu beznea <claudiu.beznea@...on.dev>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: magnus.damm@...il.com, robh+dt@...nel.org,
 krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
 linux-renesas-soc@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org,
 Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: Re: [PATCH] arm64: dts: renesas: rzg3s-smarc: Add gpio keys

Hi, Geert,

On 12.01.2024 18:20, Geert Uytterhoeven wrote:
> Hi Claudiu,
> 
> On Fri, Jan 12, 2024 at 4:38 PM claudiu beznea <claudiu.beznea@...on.dev> wrote:
>> On 12.01.2024 15:55, Geert Uytterhoeven wrote:
>>> On Wed, Dec 27, 2023 at 2:08 PM Claudiu <claudiu.beznea@...on.dev> wrote:
>>>> From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
>>>>
>>>> RZ SMARC Carrier II board has 3 user buttons called USER_SW1, USER_SW2,
>>>> USER_SW3. Add a DT node in device tree to propertly instantiate the
>>>> gpio-keys driver for these buttons.
>>>>
>>>> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
>>>
>>> Thanks for your patch!
>>>
>>>> --- a/arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi
>>>> +++ b/arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi
>>>> @@ -14,6 +15,37 @@ aliases {
>>>>                 mmc1 = &sdhi1;
>>>>         };
>>>>
>>>> +       keys {
>>>
>>> Do you mind if I s/keys/keypad/ while applying? ...
>>
>> Is not actually a keypad... there are 3 buttons in a corner of the board...
>>
>> I see only 2 entries in arm64 and arm DTS directory following this pattern
>> for gpio-keys compatible node:
>>
>>  arch/arm/boot/dts/renesas/r8a7779-marzen.dts
>>  arch/arm/boot/dts/renesas/r8a7779-marzen.dts
>>
>> But if you prefer it like this, I have nothing against.
>>
>> Just asking, do you have a particular reason for naming it like this?
> 
> See the discussion in [1], and the resulting patch[2], which added the
> (so far) single user in arch/arm/boot/dts/renesas/r8a7779-marzen.dts
> 
> [1] https://lore.kernel.org/all/20231023144134.1881973-1-geert+renesas@glider.be

Ah, I remember part of this discussion. Good for me to rename it as you
proposed.

> [2] https://lore.kernel.org/all/eec1ccfb75c6215428609fdcaf3a37c75fe1fc87.1698228163.git.geert+renesas@glider.be
>>
>>>> +                       interrupt-parent = <&pinctrl>;
>>>
>>> ... and move these one level up, to avoid duplication?
>>
>> Moving it just near compatible will make the schema validation to fail with
>> this (driver is working, though):
>>
>> arch/arm64/boot/dts/renesas/r9a08g045s33-smarc.dtb: keys:
>> 'interrupt-parent' does not match any of the regexes:
>> '^(button|event|key|switch|(button|event|key|switch)-[a-z0-9-]+|[a-z0-9-]+-(button|event|key|switch))$',
>> 'pinctrl-[0-9]+'
>>         from schema $id: http://devicetree.org/schemas/input/gpio-keys.yaml#
> 
> Oops, I had completely forgotten r8a7779-marzen.dts triggers this, too...
> Let's keep it for now.
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
>