From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Fri, 1 Aug 2008 12:47:13 -0700 (PDT) From: Trent Piepho To: Timur Tabi Subject: Re: [i2c] [PATCH] powerpc: i2c-mpc: make speed registers configurable via FDT In-Reply-To: Message-ID: References: <488982B5.4070102@grandegger.com> <4889EFFE.2070201@grandegger.com> <4889FD1D.4010804@freescale.com> <20080727012722.GH12191@secretlab.ca> <4891A744.6060005@grandegger.com> <9e4733910807310849g7e5612dbk9536733e061af8ad@mail.gmail.com> <4891E06A.4070608@freescale.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: Scott Wood , Linuxppc-dev@ozlabs.org, Linux I2C List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Fri, 1 Aug 2008, Timur Tabi wrote: > On Thu, Jul 31, 2008 at 6:32 PM, Trent Piepho wrote: > > > The real problem, which kept me from making a patch to do this months ago, > > is that the source clock that the I2C freq divider applies to is different > > for just about every MPC8xxx platform. Not just a different value, but a > > totally different internal clock. Sometimes is CCB, sometimes CCB/2, > > sometimes tsec2's clock, etc. > > On which SOC is it the tesc2 clock? 834x > > > Sometimes the two i2c controllers don't even > > have the same clock. > > On which platform is that the case? I thought I had all 8[356]xx > boards covered. Did I miss some? All 83xx other than 832x.