[PATCHv2 1/9] at91: provide macb clks with "pclk" and "hclk" name
Russell King - ARM Linux
linux at arm.linux.org.uk
Thu Mar 17 06:00:10 EDT 2011
On Thu, Mar 17, 2011 at 11:22:37AM +0200, Andrew Victor wrote:
> hi Russell,
>
> >> There is no reference to a "pclk" or "hclk" in the AT91 architecture.
> >> So to avoid possible confusion, maybe create two "fake" clocks both
> >> parented to "macb_clk", and add a comment they're only for
> >> compatibility with the AVR32.
> >
> > It doesn't matter what's in the documentation.
> >
> > What matters more than conforming to documentation is keeping the drivers
> > in a clean and maintainable state without throwing lots of ifdefs into
> > them.
>
> I'm not saying the drivers need ifdefs, they should request both
> "pclk" and "hclk" as suggested.
>
> What I was suggesting is the platform clock setup on AT91 as:
> macb_clk
> |
> +-- hclk
> +-- pclk
>
> rather than:
> pclk
> |
> +-- hclk
And what I've been saying all along is to make pclk a _dummy_ clock on
the platform it doesn't exist for, rather than making it related in some
way to another clock given to the peripheral.
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