1NVIDIA Tegra186 BPMP I2C controller 2 3In Tegra186, the BPMP (Boot and Power Management Processor) owns certain HW 4devices, such as the I2C controller for the power management I2C bus. Software 5running on other CPUs must perform IPC to the BPMP in order to execute 6transactions on that I2C bus. This binding describes an I2C bus that is 7accessed in such a fashion. 8 9The BPMP I2C node must be located directly inside the main BPMP node. See 10../firmware/nvidia,tegra186-bpmp.txt for details of the BPMP binding. 11 12This node represents an I2C controller. See ../i2c/i2c.txt for details of the 13core I2C binding. 14 15Required properties: 16- compatible: 17 Array of strings. 18 One of: 19 - "nvidia,tegra186-bpmp-i2c". 20- #address-cells: Address cells for I2C device address. 21 Single-cell integer. 22 Must be <1>. 23- #size-cells: 24 Single-cell integer. 25 Must be <0>. 26- nvidia,bpmp-bus-id: 27 Single-cell integer. 28 Indicates the I2C bus number this DT node represent, as defined by the 29 BPMP firmware. 30 31Example: 32 33bpmp { 34 ... 35 36 i2c { 37 compatible = "nvidia,tegra186-bpmp-i2c"; 38 #address-cells = <1>; 39 #size-cells = <0>; 40 nvidia,bpmp-bus-id = <5>; 41 }; 42}; 43