#if CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(CLK)
struct phandle_1_arg;
-int clk_get_by_index_platdata(struct udevice *dev, int index,
- struct phandle_1_arg *cells, struct clk *clk);
+int clk_get_by_driver_info(struct udevice *dev,
+ struct phandle_1_arg *cells, struct clk *clk);
/**
- * clock_get_by_index - Get/request a clock by integer index.
+ * clk_get_by_index - Get/request a clock by integer index.
*
* This looks up and requests a clock. The index is relative to the client
* device; each device is assumed to have n clocks associated with it somehow,
int clk_get_by_index(struct udevice *dev, int index, struct clk *clk);
/**
- * clock_get_by_index_nodev - Get/request a clock by integer index
+ * clk_get_by_index_nodev - Get/request a clock by integer index
* without a device.
*
* This is a version of clk_get_by_index() that does not use a device.
int clk_get_by_index_nodev(ofnode node, int index, struct clk *clk);
/**
- * clock_get_bulk - Get/request all clocks of a device.
+ * clk_get_bulk - Get/request all clocks of a device.
*
* This looks up and requests all clocks of the client device; each device is
* assumed to have n clocks associated with it somehow, and this function finds
int clk_get_bulk(struct udevice *dev, struct clk_bulk *bulk);
/**
- * clock_get_by_name - Get/request a clock by name.
+ * clk_get_by_name - Get/request a clock by name.
*
* This looks up and requests a clock. The name is relative to the client
* device; each device is assumed to have n clocks associated with it somehow,
int clk_get_by_name_nodev(ofnode node, const char *name, struct clk *clk);
/**
- * clock_get_optional_nodev - Get/request an optinonal clock by name
+ * clk_get_optional_nodev - Get/request an optinonal clock by name
* without a device.
* @node: The client ofnode.
* @name: The name of the clock to request.
}
#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)
{
int clk_request(struct udevice *dev, struct clk *clk);
/**
- * clock_free - Free a previously requested clock.
+ * clk_free - Free a previously requested clock.
*
* @clock: A clock struct that was previously successfully requested by
* clk_request/get_by_*().
long long clk_get_parent_rate(struct clk *clk);
/**
+ * clk_round_rate() - Adjust a rate to the exact rate a clock can provide
+ *
+ * This answers the question "if I were to pass @rate to clk_set_rate(),
+ * what clock rate would I end up with?" without changing the hardware
+ * in any way. In other words:
+ *
+ * rate = clk_round_rate(clk, r);
+ *
+ * and:
+ *
+ * rate = clk_set_rate(clk, r);
+ *
+ * are equivalent except the former does not modify the clock hardware
+ * in any way.
+ *
+ * @clk: A clock struct that was previously successfully requested by
+ * clk_request/get_by_*().
+ * @rate: desired clock rate in Hz.
+ * @return rounded rate in Hz, or -ve error code.
+ */
+ulong clk_round_rate(struct clk *clk, ulong rate);
+
+/**
* clk_set_rate() - Set current clock rate.
*
* @clk: A clock struct that was previously successfully requested by
return -ENOSYS;
}
+static inline ulong clk_round_rate(struct clk *clk, ulong rate)
+{
+ return -ENOSYS;
+}
+
static inline ulong clk_set_rate(struct clk *clk, ulong rate)
{
return -ENOSYS;