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wifi: nrf70: configurable IOVDD settling delay

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Make the IOVDD settling delay configurable, instead of hardcoding a
delay that happens to work for the dev kits. For example, the nPM1300
load switches have a soft-start time of 1.8 ms.

Signed-off-by: Jordan Yates <jordan@embeint.com>
This commit is contained in:
Jordan Yates 2025-04-11 17:39:49 +10:00 • committed by Benjamin Cabé
commit b7542f17fa
2 changed files with 9 additions and 2 deletions
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7
dts/bindings/wifi/nordic,nrf70.yaml
View file

@ -22,3 +22,10 @@ properties:
description: |
GPIO of the RF Switch to control SR RF output to either SR Antenna
or shared Antenna with Wi-Fi
iovdd-power-up-delay-ms:
type: int
default: 1
description: |
Duration to wait after enabling IOVDD before attempting communications.
Default value of 1 comes from the nRF7002 DK/EK switch (TCK106AG): ~600us

4
modules/nrf_wifi/bus/rpu_hw_if.c
View file

@ -239,8 +239,8 @@ static int rpu_pwron(void)
gpio_pin_set_dt(&bucken_spec, 0);
return ret;
}
/* Settling time for iovdd nRF7002 DK/EK - switch (TCK106AG): ~600us */
k_msleep(1);
/* Settling time for IOVDD */
k_msleep(DT_PROP(NRF7002_NODE, iovdd_power_up_delay_ms));
if ((bucken_spec.port == iovdd_ctrl_spec.port) &&
(bucken_spec.pin == iovdd_ctrl_spec.pin)) {