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boards: shields: nrf2240ek: 500mA pmic current limit on bootup #17140

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merged 1 commit into from
Sep 9, 2024
Merged

boards: shields: nrf2240ek: 500mA pmic current limit on bootup #17140

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8 changes: 8 additions & 0 deletions boards/shields/nrf2240ek/nrf2240ek.conf
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Original file line number Diff line number Diff line change
@@ -1,3 +1,11 @@
CONFIG_BOOT_BANNER=n
CONFIG_EARLY_CONSOLE=n
CONFIG_NCS_BOOT_BANNER=n

# Options related to the nPM1300 regulator and the workaround
# against voltage drops on the nRF2240 power supply pin VDDPALDO.
CONFIG_SENSOR=y
CONFIG_NPM1300_CHARGER=y
# Ensure that FEM is initialized after the nPM1300 current limit on the nRF2240EK is set.
CONFIG_SENSOR_INIT_PRIORITY=90
CONFIG_MPSL_FEM_INIT_PRIORITY=91
25 changes: 24 additions & 1 deletion boards/shields/nrf2240ek/nrf2240ek.overlay
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@
};
};

fem_twi: &arduino_i2c {
&arduino_i2c {
status = "okay";
compatible = "nordic,nrf-twim";

Expand All @@ -27,4 +27,27 @@ fem_twi: &arduino_i2c {
status = "okay";
reg = <0x30>;
};

/* The nPM1300 on the nRF2240EK is used to supply power to the nRF2240 device. */
nrf2240ek_pmic: pmic@6b {
compatible = "nordic,npm1300";
status = "okay";
reg = <0x6b>;

nrf2240ek_pmic_charger: charger {
compatible = "nordic,npm1300-charger";
status = "okay";
/* When objects are placed close to the PCB antenna of the nRF2240EK shield
* the supply voltage drops on the nRF2240 power supply pin VDDPALDO were observed.
* As a workaround the current limit on VBUS of the PMIC is increased.
*/
vbus-limit-microamp = <500000>;
/* This PMIC does not have a battery, but the settings below are required by the driver */
term-microvolt = <4150000>;
current-microamp = <150000>;
dischg-limit-microamp = <1000000>;
thermistor-ohms = <10000>;
thermistor-beta = <3380>;
};
};
};
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