linux-kernel - Re: [PATCH V6] gpio: New driver for LSI ZEVIO SoCs

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Message-ID: <1584880.3T2YsxZdKp@fabians-laptop.fritz.box>
Date:	Thu, 27 Feb 2014 15:43:21 +0100
From:	Fabian Vogt <fabian@...ter-vogt.de>
To:	Pawel Moll <pawel.moll@....com>
Cc:	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Landley <rob@...dley.net>
Subject: Re: [PATCH V6] gpio: New driver for LSI ZEVIO SoCs

On Thu, Feb 24, 2014 at 10:31:59, Linux Walleij <linus.walleij@...aro.org> wrote:
> On Mon, Feb 24, 2014 at 8:54 PM, Fabian Vogt <fabian@...ter-vogt.de> wrote:
> 
> > This driver supports the GPIO controller found in LSI ZEVIO SoCs.
> > It has been successfully tested on a TI nspire CX calculator.
> >
> > Signed-off-by: Fabian Vogt <fabian@...ter-vogt.de>
> 
> I like this version. Patch applied.
> 
> Q:
> 
> > +config GPIO_ZEVIO
> > +       bool "LSI ZEVIO SoC memory mapped GPIOs"
> > +       depends on OF
> 
> So OF_GPIO is not needed for the systems using this driver?
> DT just used for probing the driver?
> 
I'm using of_mm_gpiochip_add to register the gpiochip.
In the platform's Kconfig only ARCH_WANT_OPTIONAL_GPIOLIB is needed, OF_GPIO seems to be selected automatically.
If I disable it in the .config and start "make menuconfig", it's selected again.
OF_GPIO seems to have the same state as GPIOLIB in menuconfig.

Bye,
Fabian

> Yours,
> Linus Walleij
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