There are four INA3221 chips on the Jetson TX2 (p3310 + p2771). And each INA3221 chip has three input channels to monitor power.
So this patch adds these 12 channels to the DT of Jetson TX2, by following the DT binding of INA3221 and official documents from https://developer.nvidia.com/embedded/downloads tegra186-p3310: https://developer.nvidia.com/embedded/dlc/jetson-tx2-series-modules-oem-product-design-guide tegra186-p2771-0000: http://developer.nvidia.com/embedded/dlc/jetson-tx1-tx2-developer-kit-carrier-board-spec-20180618 Signed-off-by: Nicolin Chen <[email protected]> --- .../boot/dts/nvidia/tegra186-p2771-0000.dts | 40 +++++++++++++++++++ .../arm64/boot/dts/nvidia/tegra186-p3310.dtsi | 40 +++++++++++++++++++ 2 files changed, 80 insertions(+) diff --git a/arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dts b/arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dts index ab6648c72ad5..9df4782c90f3 100644 --- a/arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dts +++ b/arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dts @@ -14,11 +14,51 @@ power-monitor@42 { compatible = "ti,ina3221"; reg = <0x42>; + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0x0>; + label = "VDD_MUX"; + shunt-resistor-micro-ohms = <20000>; + }; + + channel@1 { + reg = <0x1>; + label = "VDD_5V0_IO_SYS"; + shunt-resistor-micro-ohms = <5000>; + }; + + channel@2 { + reg = <0x2>; + label = "VDD_3V3_SYS"; + shunt-resistor-micro-ohms = <10000>; + }; }; power-monitor@43 { compatible = "ti,ina3221"; reg = <0x43>; + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0x0>; + label = "VDD_3V3_IO_SLP"; + shunt-resistor-micro-ohms = <10000>; + }; + + channel@1 { + reg = <0x1>; + label = "VDD_1V8_IO"; + shunt-resistor-micro-ohms = <10000>; + }; + + channel@2 { + reg = <0x2>; + label = "VDD_M2_IN"; + shunt-resistor-micro-ohms = <10000>; + }; }; exp1: gpio@74 { diff --git a/arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi b/arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi index 4bbee83d9943..5e18acf5cfad 100644 --- a/arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi @@ -67,11 +67,51 @@ power-monitor@40 { compatible = "ti,ina3221"; reg = <0x40>; + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0x0>; + label = "VDD_SYS_GPU"; + shunt-resistor-micro-ohms = <10000>; + }; + + channel@1 { + reg = <0x1>; + label = "VDD_SYS_SOC"; + shunt-resistor-micro-ohms = <10000>; + }; + + channel@2 { + reg = <0x2>; + label = "VDD_3V8_WIFI"; + shunt-resistor-micro-ohms = <10000>; + }; }; power-monitor@41 { compatible = "ti,ina3221"; reg = <0x41>; + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0x0>; + label = "VDD_IN"; + shunt-resistor-micro-ohms = <5000>; + }; + + channel@1 { + reg = <0x1>; + label = "VDD_SYS_CPU"; + shunt-resistor-micro-ohms = <10000>; + }; + + channel@2 { + reg = <0x2>; + label = "VDD_5V0_DDR"; + shunt-resistor-micro-ohms = <10000>; + }; }; }; -- 2.17.1
