From: Mihai Sain <mihai.sain@microchip.com>
Date: Tue, 11 Feb 2025 14:33:02 +0000 (+0200)
Subject: ARM: dts: microchip: sama7d65_curiosity: Add power monitor support
X-Git-Tag: v6.15-rc1~159^2~13^2~12
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=2e60cf9d46dfdd6bc65f1eeeb4af725623fbe94c;p=thirdparty%2Fkernel%2Flinux.git

ARM: dts: microchip: sama7d65_curiosity: Add power monitor support

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@microchip.com>
Link: https://lore.kernel.org/r/20250211143302.4102-3-mihai.sain@microchip.com
[claudiu.beznea: kept pinctrl nodes alphanumerically sorted in the
 pinctrl container]
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
---

diff --git a/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts b/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
index 0f86360fb733a..545cfcc57e300 100644
--- a/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
+++ b/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
@@ -43,11 +43,63 @@
 	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>;
 };
 
 &pioa {
+	pinctrl_i2c10_default: i2c10-default{
+		pinmux = <PIN_PB19__FLEXCOM10_IO1>,
+			 <PIN_PB20__FLEXCOM10_IO0>;
+		bias-pull-up;
+	};
+
 	pinctrl_sdmmc1_default: sdmmc1-default {
 		cmd-data {
 			pinmux = <PIN_PB22__SDMMC1_CMD>,