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dt-bindings: i2c: tegra-bpmp: Convert to json-schema

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Convert the NVIDIA Tegra186 (and later) BPMP I2C bindings from the
free-form text format to json-schema.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20211208143306.534700-1-thierry.reding@gmail.com
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Thierry Reding 2021-12-08 15:33:06 +01:00 committed by Rob Herring
parent de3f6daa66
commit 84184107c3
2 changed files with 45 additions and 42 deletions
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42
Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.txt
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NVIDIA Tegra186 BPMP I2C controller
In Tegra186, 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.txt for details of the BPMP binding.
This node represents an I2C controller. See ../i2c/i2c.txt for details of the
core I2C binding.
Required properties:
- compatible:
Array of strings.
One of:
- "nvidia,tegra186-bpmp-i2c".
- #address-cells: Address cells for I2C device address.
Single-cell integer.
Must be <1>.
- #size-cells:
Single-cell integer.
Must be <0>.
- nvidia,bpmp-bus-id:
Single-cell integer.
Indicates the I2C bus number this DT node represent, as defined by the
BPMP firmware.
Example:
bpmp {
...
i2c {
compatible = "nvidia,tegra186-bpmp-i2c";
#address-cells = <1>;
#size-cells = <0>;
nvidia,bpmp-bus-id = <5>;
};
};

45
Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.yaml Normal file
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# 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