+ *
+ * Changelog |
+ *
+ *
+ *
+ * \li Corrected OSC32K startup time definitions
+ * \li Support locking of OSC32K and XOSC32K config register (default: false)
+ * \li Added DPLL support, functions added:
+ * \c system_clock_source_dpll_get_config_defaults() and
+ * \c system_clock_source_dpll_set_config()
+ * \li Moved gclk channel locking feature out of the config struct
+ * functions added:
+ * \c system_gclk_chan_lock(),
+ * \c system_gclk_chan_is_locked()
+ * \c system_gclk_chan_is_enabled() and
+ * \c system_gclk_gen_is_enabled()
+ * |
+ *
+ *
+ * Fixed \c system_gclk_chan_disable() deadlocking if a channel is enabled
+ * and configured to a failed/not running clock generator |
+ *
+ *
+ *
+ * \li Changed default value for CONF_CLOCK_DFLL_ON_DEMAND from \c true to \c false
+ * \li Fixed system_flash_set_waitstates() failing with an assertion
+ * if an odd number of wait states provided
+ * |
+ *
+ *
+ *
+ * \li Updated dfll configuration function to implement workaround for
+ * errata 9905 in the DFLL module
+ * \li Updated \c system_clock_init() to reset interrupt flags before
+ * they are used
+ * \li Fixed \c system_clock_source_get_hz() to return correcy DFLL
+ * frequency number
+ * |
+ *
+ *
+ * \li Fixed \c system_clock_source_is_ready not returning the correct
+ * state for \c SYSTEM_CLOCK_SOURCE_OSC8M
+ * \li Renamed the various \c system_clock_source_*_get_default_config()
+ * functions to \c system_clock_source_*_get_config_defaults() to
+ * match the remainder of ASF
+ * \li Added OSC8M calibration constant loading from the device signature
+ * row when the oscillator is initialized
+ * \li Updated default configuration of the XOSC32 to disable Automatic
+ * Gain Control due to silicon errata
+ * |
+ *
+ *
+ * Initial Release |
+ *
+ *
+ */
+
+/**
+ * \page asfdoc_sam0_system_clock_exqsg Examples for System Clock Driver
+ *
+ * This is a list of the available Quick Start guides (QSGs) and example
+ * applications for \ref asfdoc_sam0_system_clock_group. QSGs are simple
+ * examples with step-by-step instructions to configure and use this driver in
+ * a selection of use cases. Note that QSGs can be compiled as a standalone
+ * application or be added to the user application.
+ *
+ * - \subpage asfdoc_sam0_system_clock_basic_use_case
+ * - \subpage asfdoc_sam0_system_gclk_basic_use_case
+ *
+ * \page asfdoc_sam0_system_clock_document_revision_history Document Revision History
+ *
+ *