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drivers: clock_control: nrf: Add helper macro for getting clock frequency

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Add NRF_PERIPH_GET_FREQUENCY() that returns the frequency of clock
that is used for the node.

Signed-off-by: Krzysztof Chruściński <krzysztof.chruscinski@nordicsemi.no>
This commit is contained in:
Krzysztof Chruściński 2024-12-11 12:55:57 +01:00 committed by Benjamin Cabé
parent 13df3b9f62
commit 226be20689
1 changed files with 19 additions and 0 deletions
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19
include/zephyr/drivers/clock_control/nrf_clock_control.h
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@ -343,6 +343,25 @@ void nrf_clock_control_hfxo_release(void);
#endif /* defined(CONFIG_CLOCK_CONTROL_NRF2) */
/** @brief Get clock frequency that is used for the given node.
*
* Macro checks if node has clock property and if yes then if clock has clock_frequency property
* then it is returned. If it has supported_clock_frequency property with the list of supported
* frequencies then the last one is returned with assumption that they are ordered and the last
* one is the highest. If node does not have clock then 16 MHz is returned which is the default
* frequency.
*
* @param node Devicetree node.
*
* @return Frequency of the clock that is used for the node.
*/
#define NRF_PERIPH_GET_FREQUENCY(node) \
COND_CODE_1(DT_CLOCKS_HAS_IDX(node, 0), \
(COND_CODE_1(DT_NODE_HAS_PROP(DT_CLOCKS_CTLR(node), clock_frequency), \
(DT_PROP(DT_CLOCKS_CTLR(node), clock_frequency)), \
(DT_PROP_LAST(DT_CLOCKS_CTLR(node), supported_clock_frequency)))), \
(NRFX_MHZ_TO_HZ(16)))
#ifdef __cplusplus
}
#endif