From: Timur Tabi <timur-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
To: Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>
Cc: Scott Wood <scottwood-KZfg59tc24xl57MIdRCFDg@public.gmane.org>,
Linuxppc-dev-mnsaURCQ41sdnm+yROfE0A@public.gmane.org,
Wolfgang Grandegger <wg-5Yr1BZd7O62+XT7JhA+gdA@public.gmane.org>,
Linux I2C <i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org>
Subject: Re: [PATCH] powerpc: i2c-mpc: make speed registers configurable via FDT
Date: Thu, 31 Jul 2008 15:37:07 -0500 [thread overview]
Message-ID: <48922273.6070801@freescale.com> (raw)
In-Reply-To: <fa686aa40807311335t1dd123d0mc385234ebe55248-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
Grant Likely wrote:
> How is the divider controlled? Is it a fixed property of the SoC?
Yes. The divider is either 1, 2, or 3, and the only way to know which one it is
is to look up the specific SOC model number. And depending on the SOC model,
there may also be a register that needs to be looked up.
> a
> shared register setting? or a register setting within the i2c device?
The I2C device itself has no idea what the divider is. It only sees the result
of the divider.
--
Timur Tabi
Linux kernel developer at Freescale
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next prev parent reply other threads:[~2008-07-31 20:37 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <488982B5.4070102@grandegger.com>
[not found] ` <4889942C.4040800@scram.de>
[not found] ` <48899736.8020400@grandegger.com>
[not found] ` <fa686aa40807250612g34b5167dtbe70c810f30a5d32@mail.gmail.com>
[not found] ` <ed82fe3e0807250721n115d28c7ha1f641c9175c473d@mail.gmail.com>
[not found] ` <4889EFFE.2070201@grandegger.com>
[not found] ` <4889FD1D.4010804@freescale.com>
[not found] ` <20080727012722.GH12191@secretlab.ca>
[not found] ` <4891A744.6060005@grandegger.com>
2008-07-31 15:49 ` [PATCH] powerpc: i2c-mpc: make speed registers configurable via FDT Jon Smirl
2008-07-31 15:55 ` Timur Tabi
[not found] ` <4891E06A.4070608-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2008-07-31 23:32 ` Trent Piepho
2008-08-01 13:17 ` [i2c] " Timur Tabi
2008-08-01 15:47 ` Scott Wood
2008-08-01 19:47 ` Trent Piepho
[not found] ` <Pine.LNX.4.58.0808011246290.10341-13q4cmjDBaTP3RPoUHIrnuTW4wlIGRCZ@public.gmane.org>
2008-08-01 19:50 ` Timur Tabi
2008-07-31 17:22 ` Wolfgang Grandegger
[not found] ` <4891F4D8.9090905-5Yr1BZd7O62+XT7JhA+gdA@public.gmane.org>
2008-07-31 17:31 ` Grant Likely
2008-07-31 17:51 ` Wolfgang Grandegger
[not found] ` <fa686aa40807311031r66f6451aw206faf54509c14d9-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-07-31 17:54 ` Timur Tabi
2008-07-31 18:07 ` Wolfgang Grandegger
[not found] ` <4891FF51.4020701-5Yr1BZd7O62+XT7JhA+gdA@public.gmane.org>
2008-07-31 18:06 ` Timur Tabi
2008-07-31 18:07 ` Grant Likely
[not found] ` <fa686aa40807311107m44ce7fbk35e94d1a24b992fb-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-07-31 18:10 ` Timur Tabi
[not found] ` <48920016.5000506-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2008-07-31 18:21 ` Grant Likely
2008-07-31 18:09 ` Grant Likely
[not found] ` <20080731180959.GA29057-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>
2008-07-31 18:13 ` Timur Tabi
2008-07-31 18:28 ` Grant Likely
[not found] ` <20080731182810.GB29097-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>
2008-07-31 18:35 ` Timur Tabi
2008-07-31 18:57 ` Jon Smirl
[not found] ` <9e4733910807311157q358640ddyef1f14865c069b8-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-07-31 19:01 ` Timur Tabi
2008-07-31 19:25 ` Grant Likely
2008-08-01 0:22 ` [i2c] " Trent Piepho
[not found] ` <Pine.LNX.4.58.0807311656250.10341-13q4cmjDBaTP3RPoUHIrnuTW4wlIGRCZ@public.gmane.org>
2008-08-01 1:19 ` Jon Smirl
[not found] ` <9e4733910807311819i60872285ga4829c841185fdc0-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-08-01 1:36 ` Trent Piepho
[not found] ` <Pine.LNX.4.58.0807311828580.10341-13q4cmjDBaTP3RPoUHIrnuTW4wlIGRCZ@public.gmane.org>
2008-08-01 1:44 ` Jon Smirl
[not found] ` <9e4733910807311844p142b26ffyb4105df3e136f65-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-08-01 15:02 ` Timur Tabi
2008-08-01 16:05 ` [i2c] " Jon Smirl
2008-08-01 7:29 ` Wolfgang Grandegger
2008-08-01 2:03 ` Grant Likely
2008-08-01 2:35 ` Jon Smirl
2008-08-01 13:25 ` Timur Tabi
2008-08-01 14:28 ` Jon Smirl
[not found] ` <ed82fe3e0808010625q53680d42l83f28a6df835f959-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-08-01 14:32 ` Jon Smirl
2008-08-01 21:14 ` [i2c] " Trent Piepho
2008-08-01 7:25 ` Wolfgang Grandegger
2008-08-01 14:38 ` Grant Likely
[not found] ` <48920607.5040606-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2008-07-31 19:01 ` Scott Wood
2008-07-31 19:08 ` Timur Tabi
2008-07-31 19:15 ` Scott Wood
[not found] ` <48920F69.6020909-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2008-07-31 19:19 ` Timur Tabi
[not found] ` <48921057.8030807-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2008-07-31 19:21 ` Scott Wood
[not found] ` <489210AF.7000909-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2008-07-31 19:22 ` Timur Tabi
2008-07-31 19:11 ` Jon Smirl
2008-07-31 19:14 ` Grant Likely
2008-07-31 19:24 ` Wolfgang Grandegger
[not found] ` <48921187.1090101-5Yr1BZd7O62+XT7JhA+gdA@public.gmane.org>
2008-07-31 19:24 ` Timur Tabi
2008-07-31 19:54 ` Wolfgang Grandegger
2008-07-31 19:58 ` Timur Tabi
2008-07-31 20:17 ` Wolfgang Grandegger
[not found] ` <48921DED.6010403-5Yr1BZd7O62+XT7JhA+gdA@public.gmane.org>
2008-07-31 20:19 ` Timur Tabi
2008-07-31 20:28 ` Wolfgang Grandegger
[not found] ` <48922087.4050903-5Yr1BZd7O62+XT7JhA+gdA@public.gmane.org>
2008-07-31 20:28 ` Timur Tabi
[not found] ` <48921E44.7010502-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2008-07-31 20:30 ` Grant Likely
2008-07-31 20:32 ` Jon Smirl
[not found] ` <9e4733910807311332q611b43b3y26f64b5269ccb657-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-07-31 20:35 ` Grant Likely
[not found] ` <fa686aa40807311335t1dd123d0mc385234ebe55248-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-07-31 20:37 ` Timur Tabi [this message]
2008-07-31 20:48 ` Grant Likely
2008-07-31 20:55 ` Jon Smirl
[not found] ` <9e4733910807311355q3394b4bfg66c37055384451f7-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-07-31 20:56 ` Scott Wood
2008-07-31 20:56 ` Timur Tabi
2008-07-31 21:03 ` Jon Smirl
[not found] ` <9e4733910807311403o63c37366ldae30e873f33a21e-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-07-31 21:10 ` Timur Tabi
2008-07-31 21:14 ` Wolfgang Grandegger
[not found] ` <48922B40.3010808-5Yr1BZd7O62+XT7JhA+gdA@public.gmane.org>
2008-07-31 21:17 ` Timur Tabi
2008-08-01 1:16 ` [i2c] " Trent Piepho
2008-08-01 0:57 ` Trent Piepho
2008-07-31 20:35 ` Timur Tabi
[not found] ` <48922218.9020503-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2008-07-31 20:43 ` Jon Smirl
[not found] ` <9e4733910807311343h3a1b21dbub15754090a67fac6-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-07-31 20:44 ` Timur Tabi
2008-07-31 19:59 ` Grant Likely
[not found] ` <20080731195911.GA29610-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>
2008-07-31 20:00 ` Timur Tabi
2008-07-31 20:20 ` Wolfgang Grandegger
[not found] ` <48921EA2.1080600-5Yr1BZd7O62+XT7JhA+gdA@public.gmane.org>
2008-07-31 20:19 ` Timur Tabi
2008-08-01 0:46 ` [i2c] " Trent Piepho
[not found] ` <Pine.LNX.4.58.0807311742230.10341-13q4cmjDBaTP3RPoUHIrnuTW4wlIGRCZ@public.gmane.org>
2008-08-01 14:34 ` Grant Likely
2008-08-01 14:48 ` [i2c] " Geert Uytterhoeven
2008-07-31 17:35 ` Jon Smirl
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