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Message-ID: <20110810171933.GW4926@sgi.com>
Date: Wed, 10 Aug 2011 12:19:33 -0500
From: Robin Holt <holt@....com>
To: Scott Wood <scottwood@...escale.com>
Cc: Robin Holt <holt@....com>, Kumar Gala <galak@...nel.crashing.org>,
Wolfgang Grandegger <wg@...ndegger.com>,
U Bhaskar-B22300 <B22300@...escale.com>,
Grant Likely <grant.likely@...retlab.ca>,
Marc Kleine-Budde <mkl@...gutronix.de>,
socketcan-core@...ts.berlios.de, netdev@...r.kernel.org,
PPC list <linuxppc-dev@...ts.ozlabs.org>,
devicetree-discuss@...ts.ozlabs.org
Subject: Re: [PATCH v11 5/5] powerpc: Fix up fsl-flexcan device tree
binding.
On Wed, Aug 10, 2011 at 11:56:28AM -0500, Scott Wood wrote:
> On 08/10/2011 11:27 AM, Robin Holt wrote:
> > -CPI Clock- Can Protocol Interface Clock
> > - This CLK_SRC bit of CTRL(control register) selects the clock source to
> > - the CAN Protocol Interface(CPI) to be either the peripheral clock
> > - (driven by the PLL) or the crystal oscillator clock. The selected clock
> > - is the one fed to the prescaler to generate the Serial Clock (Sclock).
> > - The PRESDIV field of CTRL(control register) controls a prescaler that
> > - generates the Serial Clock (Sclock), whose period defines the
> > - time quantum used to compose the CAN waveform.
> > +- compatible : Should be "fsl,flexcan" and optionally
> > + "fsl,flexcan-<processor>"
>
> fsl,<processor>-flexcan, and it should not be optional, and should come
> before "fsl,flexcan".
>
> Also may want to list fsl,p1010-rdb as a "canonical compatible" for
> anything which is backwards compatible with p1010's implementation.
How do I specify 'canonical compatible'? What would be the use of it
in that implementation?
Robin
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