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soc: nordic: nrf54h: Add option to use NFCT pins as GPIOs

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Protection circuit must be disabled to use NFCT antenna pins
as GPIOs. It can be done by adding nfct-pins-as-gpios to nfct
node in the devicetree in cpuapp. Node must be disabled as
NFCT is not used. In legacy platforms same property was added
to uicr node because that information was stored in UICR. In
nrf54h20 it is not part of UICR so property is part of nfct
node.

Signed-off-by: Krzysztof Chruściński <krzysztof.chruscinski@nordicsemi.no>
This commit is contained in:
Krzysztof Chruściński 2025-02-25 11:12:09 +01:00 • committed by Fabio Baltieri
commit 7249fac80d
3 changed files with 28 additions and 0 deletions
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4
dts/arm/nordic/nrf54h20_cpuapp.dtsi
View file

@ -59,3 +59,7 @@ wdt011: &cpuapp_wdt011 {};
&grtc {
interrupts = <109 NRF_DEFAULT_IRQ_PRIORITY>;
};
&nfct {
compatible = "nordic,nrf-nfct-v2";
};

18
dts/bindings/net/wireless/nordic,nrf-nfct-v2.yaml Normal file
View file

@ -0,0 +1,18 @@
# Copyright (c) 2025 Nordic Semiconductor ASA
# SPDX-License-Identifier: Apache-2.0
description: Nordic nRF family NFCT (Near Field Communication Tag)
compatible: "nordic,nrf-nfct-v2"
include: nordic,nrf-nfct.yaml
properties:
nfct-pins-as-gpios:
type: boolean
description: |
When enabled this property will configure pins dedicated to NFCT
peripheral as regular GPIOs. This property must be applied in cpuapp
if NFCT pins are intended to be used as regular GPIOs by any core.
NFC pins in nRF54H series: P2.10 and P2.11

6
soc/nordic/nrf54h/soc.c
View file

@ -18,6 +18,7 @@
#include <hal/nrf_lrcconf.h>
#include <hal/nrf_spu.h>
#include <hal/nrf_memconf.h>
#include <hal/nrf_nfct.h>
#include <soc/nrfx_coredep.h>
#include <soc_lrcconf.h>
#include <dmm.h>
@ -151,6 +152,11 @@ static int nordicsemi_nrf54h_init(void)
nrf_spu_periph_perm_dmasec_set(spu, nrf_address_slave_get(ccm030_addr), true);
#endif
if (DT_NODE_HAS_STATUS(DT_NODELABEL(nfct), disabled) &&
DT_PROP_OR(DT_NODELABEL(nfct), nfct_pins_as_gpios, 0)) {
nrf_nfct_pad_config_enable_set(NRF_NFCT, false);
}
return 0;
}