linux-kernel - Re: [PATCH v2 2/2] gpio: vf610: add get

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Message-ID: <50b97539-cef2-4a75-a750-96adc2467f67@gmx.net>
Date: Fri, 2 Aug 2024 15:22:03 +0200
From: Stefan Wahren <wahrenst@....net>
To: haibo.chen@....com, linus.walleij@...aro.org, brgl@...ev.pl
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
 imx@...ts.linux.dev
Subject: Re: [PATCH v2 2/2] gpio: vf610: add get_direction() support

Hi Haibo,

Am 01.08.24 um 11:30 schrieb haibo.chen@....com:
> From: Haibo Chen <haibo.chen@....com>
>
> For IP which do not contain PDDR, currently use the pinmux API
> pinctrl_gpio_direction_input() to config the output/input, pinmux
> currently do not support get_direction(). So here add the GPIO
> get_direction() support only for the IP which has Port Data
> Direction Register (PDDR).
just a question about how things work:

fsl,imx7ulp-gpio and i.MX93 have PDDR, so GPIO get_direction is handled
in gpio-vf610 driver
fsl,vf610-gpio doesn't have PDDR, so all GPIO direction stuff is handled
in pinctrl-vf610 driver

Is this correct?

Best regards