47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/*
|
|
* Copyright (c) 2023 ENE Technology Inc.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <zephyr/init.h>
|
|
#include <zephyr/devicetree.h>
|
|
#include <reg/pmu.h>
|
|
#include <reg/gcfg.h>
|
|
|
|
#define PMU_BASE DT_REG_ADDR(DT_NODELABEL(pmu))
|
|
#define GCFG_BASE DT_REG_ADDR(DT_NODELABEL(gcfg))
|
|
|
|
static void pmu_init(void)
|
|
{
|
|
struct pmu_regs *pmu = ((struct pmu_regs *)PMU_BASE);
|
|
|
|
/* Interrupt Event Wakeup from IDLE mode Enable */
|
|
pmu->PMUIDLE |= PMU_IDLE_WU_ENABLE;
|
|
/* GPTD wake up from STOP mode enable. */
|
|
pmu->PMUSTOP |= PMU_STOP_WU_GPTD;
|
|
/* SWD EDI32 wake up from STOP mode enable */
|
|
pmu->PMUSTOP |= (PMU_STOP_WU_EDI32 | PMU_STOP_WU_SWD);
|
|
}
|
|
static void clock_init(void)
|
|
{
|
|
struct gcfg_regs *gcfg = ((struct gcfg_regs *)GCFG_BASE);
|
|
|
|
if (CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC == 96000000) {
|
|
/* AHB/APB clock select 96MHz/48MHz */
|
|
gcfg->CLKCFG = GCFG_CLKCFG_96M;
|
|
} else if (CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC == 48000000) {
|
|
/* AHB/APB clock select 48MHz/24MHz */
|
|
gcfg->CLKCFG = GCFG_CLKCFG_48M;
|
|
} else {
|
|
/* AHB/APB clock select 24MHz/12MHz */
|
|
gcfg->CLKCFG = GCFG_CLKCFG_24M;
|
|
}
|
|
}
|
|
|
|
void soc_early_init_hook(void)
|
|
{
|
|
clock_init();
|
|
pmu_init();
|
|
}
|