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authorUros Majstorovic <majstor@majstor.org>2020-08-05 03:39:22 +0200
committerUros Majstorovic <majstor@majstor.org>2020-08-05 03:39:22 +0200
commitcf7c06297d04bade9cd04c056f9ed510e64dd7bd (patch)
treea3b8cc23574b98e10874b51d33c9fe1bfc012663 /code/fe310/bsp/drivers/prci_driver.h
parent5cd610a07468137066ea4daa5176c3e7045113b0 (diff)
code -> fw
Diffstat (limited to 'code/fe310/bsp/drivers/prci_driver.h')
-rw-r--r--code/fe310/bsp/drivers/prci_driver.h80
1 files changed, 0 insertions, 80 deletions
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 <unistd.h>
-
-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
-