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From: Sungbo Eo <>
To: Andy Shevchenko <>
Cc: Linus Walleij <>,
	Bartosz Golaszewski <>,
	Michael Walle <>,
	Linux Kernel Mailing List <>,
	"open list:GPIO SUBSYSTEM" <>
Subject: Re: [PATCH v3 1/2] gpio: add GPO driver for PCA9570
Date: Thu, 2 Jul 2020 21:18:24 +0900
Message-ID: <> (raw)
In-Reply-To: <>

On 2020-07-01 06:30, Andy Shevchenko wrote:
> On Tue, Jun 30, 2020 at 7:08 PM Sungbo Eo <> wrote:
>> NXP PCA9570 is 4-bit I2C GPO expander without interrupt functionality.
>> Its ports are controlled only by a data byte without register address.
>> As there is no other driver similar enough to be adapted for it, a new
>> driver is introduced here.
> It looks good, but I would add ->get() to return buffered value.

Thanks, your suggestion was indeed valuable. I reworked the driver, 
please have a look.

      reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-30 16:07 Sungbo Eo
2020-06-30 16:09 ` [PATCH v3 2/2] dt-bindings: gpio: Add bindings for NXP PCA9570 Sungbo Eo
2020-07-13 19:07   ` Rob Herring
2020-07-16 12:37   ` Linus Walleij
2020-06-30 21:30 ` [PATCH v3 1/2] gpio: add GPO driver for PCA9570 Andy Shevchenko
2020-07-02 12:18   ` Sungbo Eo [this message]

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