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drivers: entropy: esp32: update register call

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Update entropy driver to use proper registers

Signed-off-by: Sylvio Alves <sylvio.alves@espressif.com>
This commit is contained in:
Sylvio Alves 2020-08-20 06:52:42 -03:00 • committed by Anas Nashif
commit 57c7dfbbc3
5 changed files with 55 additions and 35 deletions
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14
drivers/clock_control/clock_control_esp32.c
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@ -20,6 +20,7 @@
#include <drivers/clock_control.h>
#include <sys/util.h>
#include "clock_control_esp32.h"
#include "driver/periph_ctrl.h"
struct esp32_clock_config {
uint32_t clk_src_sel;
@ -176,6 +177,16 @@ static inline uint32_t clk_val_to_reg_val(uint32_t val)
return (val & UINT16_MAX) | ((val & UINT16_MAX) << 16);
}
int IRAM_ATTR esp_clk_cpu_freq(void)
{
return MHZ(esp32_rom_g_ticks_per_us_pro);
}
int IRAM_ATTR esp_clk_apb_freq(void)
{
return MHZ(MIN(esp32_rom_g_ticks_per_us_pro, 80));
}
void IRAM_ATTR ets_update_cpu_frequency(uint32_t ticks_per_us)
{
/* Update scale factors used by ets_delay_us */
@ -326,6 +337,9 @@ static int clock_control_esp32_init(const struct device *dev)
return -EINVAL;
}
/* Enable RNG clock. */
periph_module_enable(PERIPH_RNG_MODULE);
/* Re-calculate the CCOUNT register value to make time calculation correct.
* This should be updated on each frequency change
* New CCOUNT = Current CCOUNT * (new freq / old freq)