All of lore.kernel.org
 help / color / mirror / Atom feed
From: Stefan Wahren <wahrenst@gmx.net>
To: linux-gpio@vger.kernel.org
Subject: pinctrl: Questions regarding pinconf_ops and bcm2835
Date: Wed, 3 Jan 2024 13:12:40 +0100	[thread overview]
Message-ID: <bbc667b5-366b-430f-afd5-fa8a9326d9b7@gmx.net> (raw)

Hi,
i recently noticed that the BCM2711 (used on Raspberry Pi 4) doesn't
implement pin_config_get, but this SOC is able to read back the bias
settings of the pins. After looking deeper into the pinconf_ops i had
some questions:

1. Are there any other benefits from implementing pin_config_get except
of a proper debugfs output?

2. Since the pin direction of BCM2835/2711 (input/output) is already
handled by pinmux_ops via gpio_set_direction, how should pin_config_set
handle PIN_CONFIG_OUTPUT_ENABLE?

3. In case pin_config_get is implemented should the parameter
PIN_CONFIG_OUTPUT_ENABLE and PIN_CONFIG_OUTPUT be handled?

Best regards



             reply	other threads:[~2024-01-03 12:12 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-03 12:12 Stefan Wahren [this message]
2024-01-08  7:33 ` pinctrl: Questions regarding pinconf_ops and bcm2835 Stefan Wahren
  -- strict thread matches above, loose matches on Subject: below --
2024-01-20 11:34 Stefan Wahren
2024-01-20 12:42 ` Kent Gibson

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=bbc667b5-366b-430f-afd5-fa8a9326d9b7@gmx.net \
    --to=wahrenst@gmx.net \
    --cc=linux-gpio@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.