Linux-Hwmon Archive on lore.kernel.org
 help / color / Atom feed
From: Wolfram Sang <wsa@the-dreams.de>
To: Max <max@enpas.org>
Cc: linux-i2c@vger.kernel.org, linux-hwmon@vger.kernel.org,
	Wolfram Sang <wsa+renesas@sang-engineering.com>,
	Jean Delvare <jdelvare@suse.com>,
	Guenter Roeck <linux@roeck-us.net>,
	linux-m68k@vger.kernel.org, linux-kernel@vger.kernel.org,
	glaubitz@physik.fu-berlin.de
Subject: Re: [PATCH v2 1/4] i2c/busses: Add i2c-icy for I2C on m68k/Amiga
Date: Thu, 15 Aug 2019 14:04:30 +0200
Message-ID: <20190815120430.GB1916@kunai> (raw)
In-Reply-To: <54185c85-8c26-916e-41b1-af9b55223e7b@enpas.org>

[-- Attachment #1: Type: text/plain, Size: 1066 bytes --]


> My suggestion is to not touch i2c-elektor at all for now, and remove
> the 'clock' parameter from the first iteration of i2c-icy. It can be
> added back in case someone complains, which I deem unlikely.

Full ack.

>   When the PCF8584 is addressed as slave, this register
>   must be loaded with the 7-bit I 2 C-bus address to which the
>   PCF8584 is to respond. During initialization, the own
>   address register S0' must be written to, regardless
>   whether it is later used.

I see. It must be written a non-zero value to leave the monitor mode.
But this really needs no callback, we can hardcode any non-zero value.
If slave support is (ever) to be implemented, the own address will come
from the I2C core.

> Okay, so we don't care. Cool, then it's safe to kick the 'clock'
> parameter from i2c-icy. All 2019 boards (which should be the vast
> majority in existence) came with a 12 MHz oscillator AFAIK, so the
> default should be good.

Most drivers don't allow users to change the bus speed, so I think it is
safe to remove.


[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]

  reply index

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-12 23:52 Max Staudt
2019-08-12 23:52 ` [PATCH v2 2/4] i2c/busses/i2c-icy: Add LTC2990 present on 2019 board revision Max Staudt
2019-08-13  7:03   ` Geert Uytterhoeven
2019-08-13  9:49     ` Max Staudt
2019-08-14 19:52       ` Wolfram Sang
2019-08-12 23:52 ` [PATCH v2 3/4] hwmon/ltc2990: Add platform_data support Max Staudt
2019-08-13  6:59   ` Geert Uytterhoeven
2019-08-13  8:02   ` Guenter Roeck
2019-08-13  8:27     ` Geert Uytterhoeven
2019-08-13 13:27       ` Guenter Roeck
2019-08-13 13:32         ` Geert Uytterhoeven
2019-08-13 10:10     ` Max Staudt
2019-08-13 13:24       ` Guenter Roeck
2019-08-13 13:31         ` Max
2019-08-14 18:11         ` Max Staudt
2019-08-12 23:52 ` [PATCH v2 4/4] i2c/busses/i2c-icy: Add platform_data for LTC2990 Max Staudt
2019-08-13  7:04   ` Geert Uytterhoeven
2019-08-13  7:08 ` [PATCH v2 1/4] i2c/busses: Add i2c-icy for I2C on m68k/Amiga Geert Uytterhoeven
2019-08-13  9:50   ` Max Staudt
2019-08-14 19:47 ` Wolfram Sang
2019-08-14 22:33   ` Max Staudt
2019-08-15  7:12     ` Wolfram Sang
2019-08-15 10:00       ` Max Staudt
2019-08-15 11:48         ` Wolfram Sang
2019-08-15 11:52           ` Max
2019-08-15 12:04             ` Wolfram Sang [this message]
2019-08-15 12:10               ` Max Staudt
2019-08-15 12:52                 ` Wolfram Sang

Reply instructions:

You may reply publically 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=20190815120430.GB1916@kunai \
    --to=wsa@the-dreams.de \
    --cc=glaubitz@physik.fu-berlin.de \
    --cc=jdelvare@suse.com \
    --cc=linux-hwmon@vger.kernel.org \
    --cc=linux-i2c@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-m68k@vger.kernel.org \
    --cc=linux@roeck-us.net \
    --cc=max@enpas.org \
    --cc=wsa+renesas@sang-engineering.com \
    /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

Linux-Hwmon Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-hwmon/0 linux-hwmon/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-hwmon linux-hwmon/ https://lore.kernel.org/linux-hwmon \
		linux-hwmon@vger.kernel.org linux-hwmon@archiver.kernel.org
	public-inbox-index linux-hwmon


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-hwmon


AGPL code for this site: git clone https://public-inbox.org/ public-inbox