[PATCH v2 2/7] clk: Implement clk_set_rate
shawn.guo at freescale.com
Sun Oct 23 14:24:59 UTC 2011
On Thu, Sep 22, 2011 at 03:26:57PM -0700, Mike Turquette wrote:
> From: Jeremy Kerr <jeremy.kerr at canonical.com>
> Implement clk_set_rate by adding a set_rate callback to clk_hw_ops.
> Rates are propagated down the clock tree and recalculated. Also adds a
> flag for signaling that parents must change rates to achieve the desired
> frequency (upstream propagation).
> Upstream propagation is not yet implemented.
> Device pre-change and post-change notifications are not implemented, but
> are marked up as FIXME comments.
> Signed-off-by: Jeremy Kerr <jeremy.kerr at canonical.com>
> Signed-off-by: Mark Brown <broonie at opensource.wolfsonmicro.com>
> Signed-off-by: Mike Turquette <mturquette at ti.com>
> Changes since v1:
> Remove upstream propagation (for now)
> Rename CLK_SET_RATE_PROPAGATE to CLK_PARENT_RATE_CHANGE
> + * @set_rate Change the rate of this clock. If this callback returns
> + * CLK_SET_RATE_PROPAGATE, the rate change will be propagated to
s/CLK_SET_RATE_PROPAGATE/CLK_PARENT_RATE_CHANGE, as suggested by your
change log above?
> + * the parent clock (which may propagate again). The requested
> + * rate of the parent is passed back from the callback in the
> + * second 'unsigned long *' argument.
> + *
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