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ARM: dts: microchip: sam9x75_curiosity: Add power monitor support

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Add PAC1934 support in order to monitor the board power consumption.
Device is connected on flexcom7 in twi mode.

[root@SAM9X75 ~]$ awk -f pac1934.awk
VDD3V3 current:   10.675 mA, voltage: 3295.41 mV
VDDOUT4 current:  5.7625 mA, voltage: 1196.78 mV
VDDCORE current: 115.442 mA, voltage: 1243.65 mV
VDDIODDR current: 29.585 mA, voltage: 1345.21 mV

Signed-off-by: Mihai Sain <mihai.sain@microchip.com>
Link: https://lore.kernel.org/r/20241122080523.3941-3-mihai.sain@microchip.com
[claudiu.beznea: s/VDDOUT4/DCDC4 to comply with schematics]
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
This commit is contained in:
Mihai Sain 2024-11-22 10:05:23 +02:00 committed by Claudiu Beznea
parent 18dd125299
commit 36591b7dac
1 changed files with 52 additions and 0 deletions
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52
arch/arm/boot/dts/microchip/at91-sam9x75_curiosity.dts
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@ -198,6 +198,52 @@ regulator-state-standby {
};
};
&flx7 {
atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_TWI>;
status = "okay";
};
&i2c7 {
dmas = <0>, <0>;
i2c-analog-filter;
i2c-digital-filter;
i2c-digital-filter-width-ns = <35>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_flx7_default>;
status = "okay";
power-monitor@10 {
compatible = "microchip,pac1934";
reg = <0x10>;
#address-cells = <1>;
#size-cells = <0>;
channel@1 {
reg = <0x1>;
shunt-resistor-micro-ohms = <10000>;
label = "VDD3V3";
};
channel@2 {
reg = <0x2>;
shunt-resistor-micro-ohms = <10000>;
label = "DCDC4";
};
channel@3 {
reg = <0x3>;
shunt-resistor-micro-ohms = <10000>;
label = "VDDCORE";
};
channel@4 {
reg = <0x4>;
shunt-resistor-micro-ohms = <10000>;
label = "VDDIODDR";
};
};
};
&i2s {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2s_default>;
@ -231,6 +277,12 @@ pinctrl_flx6_default: flx6-default {
<AT91_PIOA 24 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>,
<AT91_PIOA 25 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;
};
pinctrl_flx7_default: flx7-default {
atmel,pins =
<AT91_PIOC 0 AT91_PERIPH_C AT91_PINCTRL_PULL_UP>,
<AT91_PIOC 1 AT91_PERIPH_C AT91_PINCTRL_PULL_UP>;
};
};
gpio-keys {