On Tue, Mar 22, 2022 at 11:16 AM Bough Chen <haibo.chen@xxxxxxx> wrote: > For users, usually, they will open /dev/gpiochipx to handle gpio related option. That makes sense, it is intuitive in a way. > By the way, how can user get the labels and device names of GPIO chips? The way to get metadata for any /dev/* device such as topology on buses is through sysfs. It is also possible to get labels for all gpiochips by iterating over them. The most user-friendly thing to do is however to make use of libgpiod and associated example tools such as gpiodetect: https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/about/ Yours, Linus Walleij
Re: [PATCH v2] gpio: Allow setting gpio device id via device tree alias
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
- Subject: Re: [PATCH v2] gpio: Allow setting gpio device id via device tree alias
- From: Linus Walleij <linus.walleij@xxxxxxxxxx>
- Date: Mon, 28 Mar 2022 01:07:27 +0200
- In-reply-to: <AM0PR04MB4001E8E8DA1DF5355EB96A2B90179@AM0PR04MB4001.eurprd04.prod.outlook.com>
- References: <1647927649-9907-1-git-send-email-haibo.chen@nxp.com> <CAHp75VdZ9RVuMrgWXOWqCrmvHBtkz+S=dxXhR44Ri3p6Pj5LMA@mail.gmail.com> <AM0PR04MB4001E8E8DA1DF5355EB96A2B90179@AM0PR04MB4001.eurprd04.prod.outlook.com>
- References:
- [PATCH v2] gpio: Allow setting gpio device id via device tree alias
- From: haibo . chen
- Re: [PATCH v2] gpio: Allow setting gpio device id via device tree alias
- From: Andy Shevchenko
- RE: [PATCH v2] gpio: Allow setting gpio device id via device tree alias
- From: Bough Chen
- [PATCH v2] gpio: Allow setting gpio device id via device tree alias
- Prev by Date: Re: [PATCH v2] gpio: Allow setting gpio device id via device tree alias
- Next by Date: [PATCH 3/4] gpio/rockchip: handle deferring input-enable pinconfs
- Previous by thread: RE: [PATCH v2] gpio: Allow setting gpio device id via device tree alias
- Next by thread: Re: [PATCH v2] gpio: Allow setting gpio device id via device tree alias
- Index(es):
 |