| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/i2c/nvidia,tegra186-bpmp-i2c.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: NVIDIA Tegra186 (and later) BPMP I2C controller |
| |
| maintainers: |
| - Thierry Reding <thierry.reding@gmail.com> |
| - Jon Hunter <jonathanh@nvidia.com> |
| |
| description: | |
| In Tegra186 and later, the BPMP (Boot and Power Management Processor) |
| owns certain HW devices, such as the I2C controller for the power |
| management I2C bus. Software running on other CPUs must perform IPC to |
| the BPMP in order to execute transactions on that I2C bus. This |
| binding describes an I2C bus that is accessed in such a fashion. |
| |
| The BPMP I2C node must be located directly inside the main BPMP node. |
| See ../firmware/nvidia,tegra186-bpmp.yaml for details of the BPMP |
| binding. |
| |
| This node represents an I2C controller. See ../i2c/i2c.txt for details |
| of the core I2C binding. |
| |
| properties: |
| compatible: |
| const: nvidia,tegra186-bpmp-i2c |
| |
| nvidia,bpmp-bus-id: |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| description: Indicates the I2C bus number this DT node represents, |
| as defined by the BPMP firmware. |
| |
| allOf: |
| - $ref: /schemas/i2c/i2c-controller.yaml |
| |
| unevaluatedProperties: false |
| |
| required: |
| - compatible |
| - "#address-cells" |
| - "#size-cells" |
| - nvidia,bpmp-bus-id |
