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Nrf54l missing flpr support #104665

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8adfe6a
dts: nordic: nrf54lm20: Remove cpuflpr resource reservations
adamkondraciuk Feb 27, 2026
8bd6163
dts: nordic: nrf54l: Add FLPR core support for nrf54L targets
adamkondraciuk Feb 27, 2026
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2 changes: 2 additions & 0 deletions boards/nordic/nrf54l15dk/Kconfig.nrf54l15dk
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Expand Up @@ -5,5 +5,7 @@ config BOARD_NRF54L15DK
select SOC_NRF54L05_CPUAPP if BOARD_NRF54L15DK_NRF54L05_CPUAPP
select SOC_NRF54L10_CPUAPP if BOARD_NRF54L15DK_NRF54L10_CPUAPP || BOARD_NRF54L15DK_NRF54L10_CPUAPP_NS
select SOC_NRF54L15_CPUAPP if BOARD_NRF54L15DK_NRF54L15_CPUAPP || BOARD_NRF54L15DK_NRF54L15_CPUAPP_NS
select SOC_NRF54L05_CPUFLPR if BOARD_NRF54L15DK_NRF54L05_CPUFLPR
select SOC_NRF54L10_CPUFLPR if BOARD_NRF54L15DK_NRF54L10_CPUFLPR
select SOC_NRF54L15_CPUFLPR if BOARD_NRF54L15DK_NRF54L15_CPUFLPR || \
BOARD_NRF54L15DK_NRF54L15_CPUFLPR_XIP
6 changes: 6 additions & 0 deletions boards/nordic/nrf54l15dk/board.yml
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Expand Up @@ -24,7 +24,9 @@ runners:
groups:
- boards:
- nrf54l15dk/nrf54l05/cpuapp
- nrf54l15dk/nrf54l05/cpuflpr
- nrf54l15dk/nrf54l10/cpuapp
- nrf54l15dk/nrf54l10/cpuflpr
- nrf54l15dk/nrf54l10/cpuapp/ns
- nrf54l15dk/nrf54l15/cpuapp
- nrf54l15dk/nrf54l15/cpuapp/ns
Expand All @@ -39,7 +41,9 @@ runners:
groups:
- boards:
- nrf54l15dk/nrf54l05/cpuapp
- nrf54l15dk/nrf54l05/cpuflpr
- nrf54l15dk/nrf54l10/cpuapp
- nrf54l15dk/nrf54l10/cpuflpr
- nrf54l15dk/nrf54l10/cpuapp/ns
- nrf54l15dk/nrf54l15/cpuapp
- nrf54l15dk/nrf54l15/cpuapp/ns
Expand All @@ -54,7 +58,9 @@ runners:
groups:
- boards:
- nrf54l15dk/nrf54l05/cpuapp
- nrf54l15dk/nrf54l05/cpuflpr
- nrf54l15dk/nrf54l10/cpuapp
- nrf54l15dk/nrf54l10/cpuflpr
- nrf54l15dk/nrf54l10/cpuapp/ns
- nrf54l15dk/nrf54l15/cpuapp
- nrf54l15dk/nrf54l15/cpuapp/ns
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2 changes: 1 addition & 1 deletion boards/nordic/nrf54l15dk/nrf54l15dk_nrf54l05_cpuapp.dts
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Expand Up @@ -20,4 +20,4 @@
};

/* Include default memory partition configuration file */
#include <nordic/nrf54l05_partition.dtsi>
#include <nordic/nrf54l05_cpuapp_partition.dtsi>
65 changes: 65 additions & 0 deletions boards/nordic/nrf54l15dk/nrf54l15dk_nrf54l05_cpuflpr.dts
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@@ -0,0 +1,65 @@
/*
* Copyright (c) 2026 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/

/dts-v1/;
#include <vendor/nordic/nrf54l05_cpuflpr.dtsi>
#include "nrf54l15dk_common.dtsi"

/ {
model = "Nordic nRF54L15 DK nRF54L05 FLPR MCU";
compatible = "nordic,nrf54l15dk_nrf54l05-cpuflpr";

chosen {
zephyr,console = &uart30;
zephyr,shell-uart = &uart30;
zephyr,code-partition = &cpuflpr_code_partition;
zephyr,flash = &cpuflpr_rram;
zephyr,sram = &cpuflpr_sram;
};
};

&cpuflpr_rram {
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
ranges;

cpuflpr_code_partition: partition@0 {
label = "image-0";
reg = <0x0 DT_SIZE_K(32)>;
};
};
};

&grtc {
owned-channels = <3 4>;
status = "okay";
};

&uart30 {
status = "okay";
};

&gpio0 {
status = "okay";
};

&gpio1 {
status = "okay";
};

&gpio2 {
status = "okay";
};

&gpiote20 {
status = "okay";
};

&gpiote30 {
status = "okay";
};
17 changes: 17 additions & 0 deletions boards/nordic/nrf54l15dk/nrf54l15dk_nrf54l05_cpuflpr.yaml
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@@ -0,0 +1,17 @@
# Copyright (c) 2026 Nordic Semiconductor ASA
# SPDX-License-Identifier: Apache-2.0

identifier: nrf54l15dk/nrf54l05/cpuflpr
name: nRF54L15-DK-nRF54L05-Fast-Lightweight-Peripheral-Processor
type: mcu
arch: riscv
toolchain:
- zephyr
sysbuild: true
ram: 32
flash: 32
supported:
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@nordic-piks nordic-piks Feb 27, 2026 •
edited
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Will any peripheral test/sample fit with such amount of memory?
l15/flpr with 96 KB has already problems.
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@adamkondraciuk adamkondraciuk Feb 27, 2026 •
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hello_world works fine :)
the whole SRAM memory for L05 is 96kB
- counter
- gpio
- i2c
- spi
17 changes: 17 additions & 0 deletions boards/nordic/nrf54l15dk/nrf54l15dk_nrf54l05_cpuflpr_defconfig
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@@ -0,0 +1,17 @@
# Copyright (c) 2026 Nordic Semiconductor ASA
# SPDX-License-Identifier: Apache-2.0

# Enable UART driver
CONFIG_SERIAL=y

# Enable console
CONFIG_CONSOLE=y
CONFIG_UART_CONSOLE=y

# Enable GPIO
CONFIG_GPIO=y

CONFIG_USE_DT_CODE_PARTITION=y

# Execute from SRAM
CONFIG_XIP=n
65 changes: 65 additions & 0 deletions boards/nordic/nrf54l15dk/nrf54l15dk_nrf54l10_cpuflpr.dts
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@@ -0,0 +1,65 @@
/*
* Copyright (c) 2026 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/

/dts-v1/;
#include <vendor/nordic/nrf54l10_cpuflpr.dtsi>
#include "nrf54l15dk_common.dtsi"

/ {
model = "Nordic nRF54L15 DK nRF54L10 FLPR MCU";
compatible = "nordic,nrf54l15dk_nrf54l10-cpuflpr";

chosen {
zephyr,console = &uart30;
zephyr,shell-uart = &uart30;
zephyr,code-partition = &cpuflpr_code_partition;
zephyr,flash = &cpuflpr_rram;
zephyr,sram = &cpuflpr_sram;
};
};

&cpuflpr_rram {
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
ranges;

cpuflpr_code_partition: partition@0 {
label = "image-0";
reg = <0x0 DT_SIZE_K(64)>;
};
};
};

&grtc {
owned-channels = <3 4>;
status = "okay";
};

&uart30 {
status = "okay";
};

&gpio0 {
status = "okay";
};

&gpio1 {
status = "okay";
};

&gpio2 {
status = "okay";
};

&gpiote20 {
status = "okay";
};

&gpiote30 {
status = "okay";
};
17 changes: 17 additions & 0 deletions boards/nordic/nrf54l15dk/nrf54l15dk_nrf54l10_cpuflpr.yaml
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@@ -0,0 +1,17 @@
# Copyright (c) 2026 Nordic Semiconductor ASA
# SPDX-License-Identifier: Apache-2.0

identifier: nrf54l15dk/nrf54l10/cpuflpr
name: nRF54L15-DK-nRF54L15-Fast-Lightweight-Peripheral-Processor
type: mcu
arch: riscv
toolchain:
- zephyr
sysbuild: true
ram: 64
flash: 64
supported:
- counter
- gpio
- i2c
- spi
17 changes: 17 additions & 0 deletions boards/nordic/nrf54l15dk/nrf54l15dk_nrf54l10_cpuflpr_defconfig
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@@ -0,0 +1,17 @@
# Copyright (c) 2026 Nordic Semiconductor ASA
# SPDX-License-Identifier: Apache-2.0

# Enable UART driver
CONFIG_SERIAL=y

# Enable console
CONFIG_CONSOLE=y
CONFIG_UART_CONSOLE=y

# Enable GPIO
CONFIG_GPIO=y

CONFIG_USE_DT_CODE_PARTITION=y

# Execute from SRAM
CONFIG_XIP=n
6 changes: 1 addition & 5 deletions boards/nordic/nrf54lm20dk/nrf54lm20_a_b_cpuflpr_common.dtsi
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Expand Up @@ -4,13 +4,9 @@
* SPDX-License-Identifier: Apache-2.0
*/

#include <nordic/nrf54lm20_a_b_cpuflpr.dtsi>
#include <vendor/nordic/nrf54lm20_a_b_cpuflpr.dtsi>
#include "nrf54lm20dk_common.dtsi"

&cpuflpr_sram {
status = "okay";
};

&cpuflpr_rram {
partitions {
compatible = "fixed-partitions";
Expand Down
4 changes: 3 additions & 1 deletion boards/nordic/nrf54lm20dk/nrf54lm20dk_nrf54lm20a_cpuapp.dts
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Expand Up @@ -8,7 +8,6 @@

#include <nordic/nrf54lm20a_cpuapp.dtsi>
#include "nrf54lm20_a_b_cpuapp_common.dtsi"
#include <vendor/nordic/nrf54lm20a_cpuapp_partition.dtsi>

/ {
compatible = "nordic,nrf54lm20dk_nrf54lm20a-cpuapp";
Expand All @@ -19,3 +18,6 @@
zephyr,sram = &cpuapp_sram;
};
};

/* Include default memory partition configuration file */
#include <vendor/nordic/nrf54lm20a_cpuapp_partition.dtsi>
1 change: 0 additions & 1 deletion boards/nordic/nrf54lm20dk/nrf54lm20dk_nrf54lm20a_cpuflpr.dts
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Expand Up @@ -6,7 +6,6 @@

/dts-v1/;

#include <nordic/nrf54lm20a_cpuflpr.dtsi>
#include "nrf54lm20_a_b_cpuflpr_common.dtsi"

/ {
Expand Down
1 change: 0 additions & 1 deletion boards/nordic/nrf54lm20dk/nrf54lm20dk_nrf54lm20b_cpuapp.dts
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Expand Up @@ -8,7 +8,6 @@

#include <nordic/nrf54lm20b_cpuapp.dtsi>
#include "nrf54lm20_a_b_cpuapp_common.dtsi"
#include <nordic/nrf54lm20b_cpuapp_partition.dtsi>

/ {
compatible = "nordic,nrf54lm20dk_nrf54lm20b-cpuapp";
Expand Down
1 change: 0 additions & 1 deletion boards/nordic/nrf54lm20dk/nrf54lm20dk_nrf54lm20b_cpuflpr.dts
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Expand Up @@ -6,7 +6,6 @@

/dts-v1/;

#include <nordic/nrf54lm20b_cpuflpr.dtsi>
#include "nrf54lm20_a_b_cpuflpr_common.dtsi"

/ {
Expand Down
5 changes: 0 additions & 5 deletions dts/arm/nordic/nrf54lm20_a_b_cpuapp.dtsi
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Expand Up @@ -15,11 +15,6 @@ nvic: &cpuapp_nvic {};
/delete-node/ &cpuflpr;
/delete-node/ &cpuflpr_clic;

#ifndef USE_NON_SECURE_ADDRESS_MAP
/delete-node/ &cpuflpr_rram;
/delete-node/ &cpuflpr_sram;
#endif

/ {
chosen {
zephyr,bt-hci = &bt_hci_controller;
Expand Down
8 changes: 0 additions & 8 deletions dts/riscv/nordic/nrf54l05_cpuflpr.dtsi
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This file was deleted.

8 changes: 0 additions & 8 deletions dts/riscv/nordic/nrf54l10_cpuflpr.dtsi
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This file was deleted.

8 changes: 0 additions & 8 deletions dts/riscv/nordic/nrf54lm20a_cpuflpr.dtsi
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This file was deleted.

8 changes: 0 additions & 8 deletions dts/riscv/nordic/nrf54lm20b_cpuflpr.dtsi
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This file was deleted.

17 changes: 17 additions & 0 deletions dts/vendor/nordic/nrf54l05_partition.dtsi → ...dor/nordic/nrf54l05_cpuapp_partition.dtsi
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Expand Up @@ -16,6 +16,22 @@
reg = <0x0 DT_SIZE_K(64)>;
};

#ifdef WITH_FLPR_PARTITIONS
slot0_partition: partition@10000 {
label = "image-0";
reg = <0x10000 DT_SIZE_K(184)>;
};

slot1_partition: partition@3e000 {
label = "image-1";
reg = <0x3e000 DT_SIZE_K(184)>;
};

storage_partition: partition@6c000 {
label = "storage";
reg = <0x6c000 DT_SIZE_K(36)>;
};
#else
slot0_partition: partition@10000 {
label = "image-0";
reg = <0x10000 DT_SIZE_K(200)>;
Expand All @@ -30,5 +46,6 @@
label = "storage";
reg = <0x74000 DT_SIZE_K(36)>;
};
#endif
};
};
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