1*84184107SThierry Reding# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2*84184107SThierry Reding%YAML 1.2 3*84184107SThierry Reding--- 4*84184107SThierry Reding$id: http://devicetree.org/schemas/i2c/nvidia,tegra186-bpmp-i2c.yaml# 5*84184107SThierry Reding$schema: http://devicetree.org/meta-schemas/core.yaml# 6*84184107SThierry Reding 7*84184107SThierry Redingtitle: NVIDIA Tegra186 (and later) BPMP I2C controller 8*84184107SThierry Reding 9*84184107SThierry Redingmaintainers: 10*84184107SThierry Reding - Thierry Reding <thierry.reding@gmail.com> 11*84184107SThierry Reding - Jon Hunter <jonathanh@nvidia.com> 12*84184107SThierry Reding 13*84184107SThierry Redingdescription: | 14*84184107SThierry Reding In Tegra186 and later, the BPMP (Boot and Power Management Processor) 15*84184107SThierry Reding owns certain HW devices, such as the I2C controller for the power 16*84184107SThierry Reding management I2C bus. Software running on other CPUs must perform IPC to 17*84184107SThierry Reding the BPMP in order to execute transactions on that I2C bus. This 18*84184107SThierry Reding binding describes an I2C bus that is accessed in such a fashion. 19*84184107SThierry Reding 20*84184107SThierry Reding The BPMP I2C node must be located directly inside the main BPMP node. 21*84184107SThierry Reding See ../firmware/nvidia,tegra186-bpmp.yaml for details of the BPMP 22*84184107SThierry Reding binding. 23*84184107SThierry Reding 24*84184107SThierry Reding This node represents an I2C controller. See ../i2c/i2c.txt for details 25*84184107SThierry Reding of the core I2C binding. 26*84184107SThierry Reding 27*84184107SThierry Redingproperties: 28*84184107SThierry Reding compatible: 29*84184107SThierry Reding const: nvidia,tegra186-bpmp-i2c 30*84184107SThierry Reding 31*84184107SThierry Reding nvidia,bpmp-bus-id: 32*84184107SThierry Reding $ref: /schemas/types.yaml#/definitions/uint32 33*84184107SThierry Reding description: Indicates the I2C bus number this DT node represents, 34*84184107SThierry Reding as defined by the BPMP firmware. 35*84184107SThierry Reding 36*84184107SThierry RedingallOf: 37*84184107SThierry Reding - $ref: /schemas/i2c/i2c-controller.yaml 38*84184107SThierry Reding 39*84184107SThierry RedingunevaluatedProperties: false 40*84184107SThierry Reding 41*84184107SThierry Redingrequired: 42*84184107SThierry Reding - compatible 43*84184107SThierry Reding - "#address-cells" 44*84184107SThierry Reding - "#size-cells" 45*84184107SThierry Reding - nvidia,bpmp-bus-id 46