From cf7c06297d04bade9cd04c056f9ed510e64dd7bd Mon Sep 17 00:00:00 2001 From: Uros Majstorovic Date: Wed, 5 Aug 2020 03:39:22 +0200 Subject: code -> fw --- code/fe310/bsp/drivers/prci_driver.h | 80 ------------------------------------ 1 file changed, 80 deletions(-) delete mode 100644 code/fe310/bsp/drivers/prci_driver.h (limited to 'code/fe310/bsp/drivers/prci_driver.h') diff --git a/code/fe310/bsp/drivers/prci_driver.h b/code/fe310/bsp/drivers/prci_driver.h deleted file mode 100644 index 14e1370..0000000 --- a/code/fe310/bsp/drivers/prci_driver.h +++ /dev/null @@ -1,80 +0,0 @@ -// See LICENSE file for license details - -#ifndef _PRCI_DRIVER_H_ -#define _PRCI_DRIVER_H_ - -__BEGIN_DECLS - -#include - -typedef enum prci_freq_target { - - PRCI_FREQ_OVERSHOOT, - PRCI_FREQ_CLOSEST, - PRCI_FREQ_UNDERSHOOT - -} PRCI_freq_target; - -/* Measure and return the approximate frequency of the - * CPU, as given by measuring the mcycle counter against - * the mtime ticks. - */ -uint32_t PRCI_measure_mcycle_freq(uint32_t mtime_ticks, uint32_t mtime_freq); -unsigned long PRCI_get_cpu_freq(); - -/* Safely switch over to the HFROSC using the given div - * and trim settings. - */ -void PRCI_use_hfrosc(int div, int trim); - -/* Safely switch over to the 16MHz HFXOSC, - * applying the finaldiv clock divider (1 is the lowest - * legal value). - */ -void PRCI_use_hfxosc(uint32_t finaldiv); - -/* Safely switch over to the PLL using the given - * settings. - * - * Note that not all combinations of the inputs are actually - * legal, and this function does not check for their - * legality ("safely" means that this function won't turn off - * or glitch the clock the CPU is actually running off, but - * doesn't protect against you making it too fast or slow.) - */ - -void PRCI_use_pll(int refsel, int bypass, - int r, int f, int q, int finaldiv, - int hfroscdiv, int hfrosctrim); - -/* Use the default clocks configured at reset. - * This is ~16Mhz HFROSC and turns off the LFROSC - * (on the current FE310 Dev Platforms, an external LFROSC is - * used as it is more power efficient). - */ -void PRCI_use_default_clocks(); - -/* This routine will adjust the HFROSC trim - * while using HFROSC as the clock source, - * measure the resulting frequency, then - * use it as the PLL clock source, - * in an attempt to get over, under, or close to the - * requested frequency. It returns the actual measured - * frequency. - * - * Note that the requested frequency must be within the - * range supported by the PLL so not all values are - * achievable with this function, and not all - * are guaranteed to actually work. The PLL - * is rated higher than the hardware. - * - * There is no check on the desired f_cpu frequency, it - * is up to the user to specify something reasonable. - */ - -uint32_t PRCI_set_hfrosctrim_for_f_cpu(uint32_t f_cpu, PRCI_freq_target target); - -__END_DECLS - -#endif - -- cgit v1.2.3