PM / clk: Add support for obtaining clocks from device-tree
The PM clocks framework requires clients to pass either a con-id or a valid clk pointer in order to add a clock to a device. Add a new function of_pm_clk_add_clks() to allows device clocks to be retrieved from device-tree and populated for a given device. Note that it is not necessary to make the compilation of this new function dependent upon CONFIG_OF because there are stubs functions for the device-tree APIs used. In order to handle errors encountered when adding clocks from device-tree, add a function pm_clk_remove_clk() to remove any clocks (using a pointer to the clk structure) that have been added successfully before the error occurred. Signed-off-by:Jon Hunter <jonathanh@nvidia.com> Acked-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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