samx5x: support external clock sources #8183
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Qyriad
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Adds two board config define's, which can be added in a board's mpconfigboard.h: BOARD_XOSC_FREQ_HZ, and BOARD_XOSC_IS_CRYSTAL, which are passed to clock_init(). External clock sources are currently only implemented for SAM_D5X_E5X series chips, so defining BOARD_XOSC_FREQ_HZ for a SAMD21 board will emit an error. Signed-off-by: Qyriad <[email protected]>
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Adds two board config
defines, which can be added in a board's mpconfigboard.h:BOARD_XOSC_FREQ_HZ, andBOARD_XOSC_IS_CRYSTAL, which are passed to clock_init(). External clock sources are currently only implemented for SAM_D5X_E5X series chips, so definingBOARD_XOSC_FREQ_HZfor a SAMD21 board will emit an error.Depends on adafruit/samd-peripherals#45 — see that PR for more details on the implementation.
This is for #6161, but doesn't completely close that issue as this only implements external clock input support for SAME5x/SAMD5x chips.