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arch/nrf53: add DCDC regulator support

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add DCDC regulator support

Signed-off-by: raiden00pl <raiden00@railab.me>
This commit is contained in:
raiden00pl 2026-03-22 10:51:33 +01:00 • committed by Alan C. Assis
parent cf1d2f69b1
commit 903f393546
3 changed files with 73 additions and 0 deletions
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7
arch/arm/src/nrf53/Kconfig
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@ -424,6 +424,13 @@ config NRF53_SYSTIMER_RTC
endchoice # System Timer Source
config NRF53_DCDC
bool "Enable DC/DC regulator"
default n
---help---
This option enables the DC/DC regulator, which reduces
current consumption. This requires extra circuitry (inductors).
if NRF53_SYSTIMER_RTC
config NRF53_SYSTIMER_RTC_INSTANCE

59
arch/arm/src/nrf53/hardware/nrf53_regulators.h Normal file
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@ -0,0 +1,59 @@
/****************************************************************************
* arch/arm/src/nrf53/hardware/nrf53_regulators.h
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __ARCH_ARM_SRC_NRF53_HARDWARE_NRF53_REGULATORS_H
#define __ARCH_ARM_SRC_NRF53_HARDWARE_NRF53_REGULATORS_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include "nrf53_memorymap.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Register offsets *********************************************************/
#define NRF53_REGULATORS_MAINREGSTATUS_OFFSET 0x428 /* Main supply status */
#define NRF53_REGULATORS_SYSTEMOFF_OFFSET 0x500 /* System OFF register */
#define NRF53_REGULATORS_POFCON_OFFSET 0x510 /* Power-fail comparator configuration */
#define NRF53_REGULATORS_MAINDCDCEN_OFFSET 0x704 /* DC/DC enable register for VREGMAIN */
#define NRF53_REGULATORS_RADIODCDCEN_OFFSET 0x904 /* DC/DC enable register for VREGRADIO */
#define NRF53_REGULATORS_HDCDCEN_OFFSET 0xb00 /* DC/DC enable register for VREGH */
/* Register definitions *****************************************************/
#define NRF53_REGULATORS_MAINREGSTATUS (NRF53_REGULATORS_BASE + NRF53_REGULATORS_MAINREGSTATUS_OFFSET)
#define NRF53_REGULATORS_SYSTEMOFF (NRF53_REGULATORS_BASE + NRF53_REGULATORS_SYSTEMOFF_OFFSET)
#define NRF53_REGULATORS_POFCON (NRF53_REGULATORS_BASE + NRF53_REGULATORS_POFCON_OFFSET)
#define NRF53_REGULATORS_MAINDCDCEN (NRF53_REGULATORS_BASE + NRF53_REGULATORS_MAINDCDCEN_OFFSET)
#define NRF53_REGULATORS_RADIODCDCEN (NRF53_REGULATORS_BASE + NRF53_REGULATORS_RADIODCDCEN_OFFSET)
#define NRF53_REGULATORS_HDCDCEN (NRF53_REGULATORS_BASE + NRF53_REGULATORS_HDCDCEN_OFFSET)
/* Register bit definitions *************************************************/
#define REGULATORS_DCDCEN_ENABLE (1 << 0)
#endif /* __ARCH_ARM_SRC_NRF53_HARDWARE_NRF53_REGULATORS_H */

7
arch/arm/src/nrf53/nrf53_clockconfig.c
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@ -36,6 +36,7 @@
#include "nrf53_clockconfig.h"
#include "hardware/nrf53_clock.h"
#include "hardware/nrf53_power.h"
#include "hardware/nrf53_regulators.h"
#include "hardware/nrf53_gpio.h"
#ifdef CONFIG_NRF53_APPCORE
@ -130,4 +131,10 @@ void nrf53_clockconfig(void)
/* Wait for HFCLK192M to be running */
}
#endif
#ifdef CONFIG_NRF53_DCDC
/* Enable DC/DC regulator */
putreg32(1, NRF53_REGULATORS_MAINDCDCEN);
#endif
}