On Thu, Sep 22, 2011 at 03:26:57PM -0700, Mike Turquette wrote:
From: Jeremy Kerr jeremy.kerr@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).
TODO: 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@canonical.com Signed-off-by: Mark Brown broonie@opensource.wolfsonmicro.com Signed-off-by: Mike Turquette mturquette@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.