From: Timur Tabi <timur@freescale.com>
To: Trent Piepho <tpiepho@freescale.com>
Cc: "Scott Wood" <scottwood@freescale.com>,
z <Andre.Schwarz@matrix-vision.de>,
linuxppc-dev@ozlabs.org
Subject: Re: i2c-mpc clocking scheme
Date: Mon, 01 Dec 2008 17:00:46 -0600 [thread overview]
Message-ID: <49346C9E.4090906@freescale.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0812011438550.10176@t2.domain.actdsltmp>
Trent Piepho wrote:
> For a bus device like an i2c controller, you really have two clocks. The
> input clock the controller runs from and the speed it runs the bus at. One
> could say that one clock is for the device node and the other clock is for
> the device's sub-nodes.
We could add a property to each I2C device nodes that lists the maximum speed
that this supports. Then the I2C driver could find the smallest of these
speeds, and program the I2C controller for that speed.
--
Timur Tabi
Linux kernel developer at Freescale
next prev parent reply other threads:[~2008-12-01 23:01 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-27 15:00 i2c-mpc clocking scheme Andre Schwarz
2008-11-27 15:24 ` Timur Tabi
2008-11-27 15:43 ` Andre Schwarz
2008-11-28 20:59 ` Trent Piepho
2008-12-01 14:59 ` Timur Tabi
2008-12-01 19:40 ` André Schwarz
2008-12-01 19:48 ` Timur Tabi
2008-12-01 22:07 ` Trent Piepho
2008-12-01 22:26 ` Scott Wood
2008-12-01 22:57 ` Trent Piepho
2008-12-01 23:00 ` Timur Tabi [this message]
2008-12-01 23:07 ` Scott Wood
2008-11-27 15:49 ` Luotao Fu
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