diff options
Diffstat (limited to 'include/clk.h')
| -rw-r--r-- | include/clk.h | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/include/clk.h b/include/clk.h index ca6b85fa6f..f3c88fe68a 100644 --- a/include/clk.h +++ b/include/clk.h @@ -277,19 +277,41 @@ static inline int clk_release_all(struct clk *clk, int count) } #endif +/** + * enum clk_defaults_stage - What stage clk_set_defaults() is called at + * @CLK_DEFAULTS_PRE: Called before probe. Setting of defaults for clocks owned + * by this clock driver will be defered until after probing. + * @CLK_DEFAULTS_POST: Called after probe. Only defaults for clocks owned by + * this clock driver will be set. + * @CLK_DEFAULTS_POST_FORCE: Called after probe, and always set defaults, even + * before relocation. Usually, defaults are not set + * pre-relocation to avoid setting them twice (when + * the device is probed again post-relocation). This + * may incur a performance cost as device tree + * properties must be parsed for a second time. + * However, when not using SPL, pre-relocation may be + * the only time we can set defaults for some clocks + * (such as those used for the RAM we will relocate + * into). + */ +enum clk_defaults_stage { + CLK_DEFAULTS_PRE = 0, + CLK_DEFAULTS_POST = 1, + CLK_DEFAULTS_POST_FORCE, +}; + #if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) && \ CONFIG_IS_ENABLED(CLK) + /** * clk_set_defaults - Process 'assigned-{clocks/clock-parents/clock-rates}' * properties to configure clocks * * @dev: A device to process (the ofnode associated with this device * will be processed). - * @stage: A integer. 0 indicates that this is called before the device - * is probed. 1 indicates that this is called just after the - * device has been probed + * @stage: The stage of the probing process this function is called during. */ -int clk_set_defaults(struct udevice *dev, int stage); +int clk_set_defaults(struct udevice *dev, enum clk_defaults_stage stage); #else static inline int clk_set_defaults(struct udevice *dev, int stage) { |