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The following commit(s) were added to refs/heads/master by this push:
new 903f3935467 arch/nrf53: add DCDC regulator support
903f3935467 is described below
commit 903f393546789dee276a261f1dc618dffa668a8f
Author: raiden00pl <[email protected]>
AuthorDate: Sun Mar 22 10:51:33 2026 +0100
arch/nrf53: add DCDC regulator support
add DCDC regulator support
Signed-off-by: raiden00pl <[email protected]>
---
arch/arm/src/nrf53/Kconfig | 7 +++
arch/arm/src/nrf53/hardware/nrf53_regulators.h | 59 ++++++++++++++++++++++++++
arch/arm/src/nrf53/nrf53_clockconfig.c | 7 +++
3 files changed, 73 insertions(+)
diff --git a/arch/arm/src/nrf53/Kconfig b/arch/arm/src/nrf53/Kconfig
index b951cd9bde1..501bb2d375f 100644
--- a/arch/arm/src/nrf53/Kconfig
+++ b/arch/arm/src/nrf53/Kconfig
@@ -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
diff --git a/arch/arm/src/nrf53/hardware/nrf53_regulators.h
b/arch/arm/src/nrf53/hardware/nrf53_regulators.h
new file mode 100644
index 00000000000..c9704792334
--- /dev/null
+++ b/arch/arm/src/nrf53/hardware/nrf53_regulators.h
@@ -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 */
diff --git a/arch/arm/src/nrf53/nrf53_clockconfig.c
b/arch/arm/src/nrf53/nrf53_clockconfig.c
index c0135eaa65a..89de67eff7d 100644
--- a/arch/arm/src/nrf53/nrf53_clockconfig.c
+++ b/arch/arm/src/nrf53/nrf53_clockconfig.c
@@ -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
}
