sys-clk.c File Reference

#include <io.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <types.h>
#include <timer.h>
#include <log.h>
#include <sys-clk.h>

Include dependency graph for sys-clk.c:

Functions
void	sunxi_clk_init (void)
	Initialize the global clocks.
uint32_t	sunxi_clk_get_hosc_type ()
	Get the type of High-Speed Oscillator (HOSC).
void	sunxi_clk_reset (void)
	Reset the global clocks.
uint32_t	sunxi_clk_get_peri1x_rate ()
	Get the clock rate of the PERI1X bus.

Function Documentation

sunxi_clk_get_hosc_type()

uint32_t sunxi_clk_get_hosc_type

(

void

)

Get the type of High-Speed Oscillator (HOSC).

This function retrieves the type of the High-Speed Oscillator currently being used. The returned value can indicate different HOSC configurations or features supported by the system.

Returns

uint32_t Type of the HOSC.

sunxi_clk_get_peri1x_rate()

uint32_t sunxi_clk_get_peri1x_rate

(

)

Get the clock rate of the PERI1X bus.

Returns

The clock rate of the PERI1X bus in Hz.

sunxi_clk_init()

void sunxi_clk_init

(

void

)

Initialize the global clocks.

This function initializes the global clocks, including PLLs and clock dividers.

Initialize the global clocks.

This function configures various clock sources for the CPU, AXI, APB, NSI, and MBUS based on the Sunxi platform's requirements. The function also prints debug messages to track the initialization process.

It performs the following tasks:

• Configures the CPU and AXI clock using the set_pll_cpux_axi() function.
• Configures the APB clock using the set_apb() function.
• Configures the NSI clock using the set_pll_nsi() function.
• Configures the MBUS clock using the set_pll_mbus() function.

Note

This function should be called during the system initialization process to ensure the correct operation of the platform's clock system.

Warning

Ensure that all the clock configuration functions are correctly implemented and tested to avoid system instability.

sunxi_clk_reset()

void sunxi_clk_reset

(

void

)

Reset the global clocks.

This function resets all global clocks to their default values.