clock_control_bflb_common.h File Reference

Timing and clock helpers common to all Bouffalo Lab platforms. More...

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Macros
Main clock mux selections (see clock_bflb_set_root_clock())
#define	BFLB_MAIN_CLOCK_RC32M   0
	XCLK is RC32M, main clock is XCLK.
#define	BFLB_MAIN_CLOCK_XTAL   1
	XCLK is the crystal, main clock is XCLK.
#define	BFLB_MAIN_CLOCK_PLL_RC32M   2
	XCLK is RC32M, main clock is the PLL.
#define	BFLB_MAIN_CLOCK_PLL_XTAL   3
	XCLK is the crystal, main clock is the PLL.

Functions
static void	clock_bflb_settle (void)
	Busy-wait for a few CPU cycles to let a clock change settle.
static void	clock_bflb_set_root_clock (uint32_t clock)
	Select the root (main) clock source.
static uint32_t	clock_bflb_get_root_clock (void)
	Get the currently selected root (main) clock source.

Detailed Description

Timing and clock helpers common to all Bouffalo Lab platforms.