1 NVIDIA Tegra186 BPMP I2C controller
2
3 In Tegra186, the BPMP (Boot and Power Management Processor) owns certain HW
4 devices, such as the I2C controller for the power management I2C bus. Software
5 running on other CPUs must perform IPC to the BPMP in order to execute
6 transactions on that I2C bus. This binding describes an I2C bus that is
7 accessed in such a fashion.
8
9 The 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
12 This node represents an I2C controller. See ../i2c/i2c.txt for details of the
13 core I2C binding.
14
15 Required 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
31 Example:
32
33 bpmp {
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 };
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