linux-kernel - Re: [PATCH v3 1/3] gpio: vf610: add support to DT 'ngpios' property

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Date: Thu, 18 Jan 2024 09:25:02 +0100
From: Hector Palacios <hector.palacios@...i.com>
To: Andy Shevchenko <andy.shevchenko@...il.com>
Cc: linus.walleij@...aro.org, brgl@...ev.pl, robh+dt@...nel.org,
 krzysztof.kozlowski+dt@...aro.org, andy@...nel.org, conor+dt@...nel.org,
 shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
 festevam@...il.com, linux-imx@....com, stefan@...er.ch,
 linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/3] gpio: vf610: add support to DT 'ngpios' property

Hello Andy,

On 1/17/24 21:51, Andy Shevchenko wrote:
>> Some SoCs, such as i.MX93, don't have all 32 pins available
>> per port. Allow optional generic 'ngpios' property to be
>> specified from the device tree and default to
>> VF610_GPIO_PER_PORT (32) if the property does not exist.
> 
> ...
> 
>> +       ret = device_property_read_u32(dev, "ngpios", &ngpios);
>> +       if (ret || ngpios > VF610_GPIO_PER_PORT)
>> +               gc->ngpio = VF610_GPIO_PER_PORT;
>> +       else
>> +               gc->ngpio = (u16)ngpios;
> 
> This property is being read by the GPIOLIB core. Why do you need to repeat this?

My apologies; I had not seen this.
I'll use gpiochip_get_ngpios() on the next iteration.

Thank you!
-- 
Héctor Palacios