[PATCH 2/2] ARM: dts: microchip: sama7d65_curiosity: Add power monitor support
From: Mihai Sain
Date: Tue Feb 11 2025 - 09:34:33 EST
Add PAC1934 support in order to monitor the board power consumption.
Device is connected on flexcom10 in twi mode.
[root@SAMA7D65 ~]$ awk -f pac1934.awk
VDD3V3 current: 146.173 mA, voltage: 3302.73 mV
VDDIODDR current: 62.1356 mA, voltage: 1353.96 mV
VDDCORE current: 242.248 mA, voltage: 1204.36 mV
VDDCPU current: 213.565 mA, voltage: 1303.05 mV
Signed-off-by: Mihai Sain <mihai.sain@xxxxxxxxxxxxx>
---
.../dts/microchip/at91-sama7d65_curiosity.dts | 52 +++++++++++++++++++
1 file changed, 52 insertions(+)
diff --git a/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts b/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
index 0f86360fb733..8d826ec4c66c 100644
--- a/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
+++ b/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
@@ -43,6 +43,52 @@ &uart6 {
status = "okay";
};
+&flx10 {
+ atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_TWI>;
+ status = "okay";
+};
+
+&i2c10 {
+ dmas = <0>, <0>;
+ i2c-analog-filter;
+ i2c-digital-filter;
+ i2c-digital-filter-width-ns = <35>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_i2c10_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 = <47000>;
+ label = "VDD3V3";
+ };
+
+ channel@2 {
+ reg = <0x2>;
+ shunt-resistor-micro-ohms = <47000>;
+ label = "VDDIODDR";
+ };
+
+ channel@3 {
+ reg = <0x3>;
+ shunt-resistor-micro-ohms = <47000>;
+ label = "VDDCORE";
+ };
+
+ channel@4 {
+ reg = <0x4>;
+ shunt-resistor-micro-ohms = <47000>;
+ label = "VDDCPU";
+ };
+ };
+};
+
&main_xtal {
clock-frequency = <24000000>;
};
@@ -75,6 +121,12 @@ pinctrl_uart6_default: uart6-default {
<PIN_PD19__FLEXCOM6_IO1>;
bias-disable;
};
+
+ pinctrl_i2c10_default: i2c10-default{
+ pinmux = <PIN_PB19__FLEXCOM10_IO1>,
+ <PIN_PB20__FLEXCOM10_IO0>;
+ bias-pull-up;
+ };
};
&sdmmc1 {
--
2.48.1