1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/i2c/nvidia,tegra186-bpmp-i2c.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: NVIDIA Tegra186 (and later) BPMP I2C controller 8 9maintainers: 10 - Thierry Reding <thierry.reding@gmail.com> 11 - Jon Hunter <jonathanh@nvidia.com> 12 13description: | 14 In Tegra186 and later, the BPMP (Boot and Power Management Processor) 15 owns certain HW devices, such as the I2C controller for the power 16 management I2C bus. Software running on other CPUs must perform IPC to 17 the BPMP in order to execute transactions on that I2C bus. This 18 binding describes an I2C bus that is accessed in such a fashion. 19 20 The BPMP I2C node must be located directly inside the main BPMP node. 21 See ../firmware/nvidia,tegra186-bpmp.yaml for details of the BPMP 22 binding. 23 24 This node represents an I2C controller. See ../i2c/i2c.txt for details 25 of the core I2C binding. 26 27properties: 28 compatible: 29 const: nvidia,tegra186-bpmp-i2c 30 31 nvidia,bpmp-bus-id: 32 $ref: /schemas/types.yaml#/definitions/uint32 33 description: Indicates the I2C bus number this DT node represents, 34 as defined by the BPMP firmware. 35 36allOf: 37 - $ref: /schemas/i2c/i2c-controller.yaml 38 39unevaluatedProperties: false 40 41required: 42 - compatible 43 - "#address-cells" 44 - "#size-cells" 45 - nvidia,bpmp-bus-id 46