[PATCH 3/3] dt-bindings: add Tegra186 BPMP I2C binding

[Jon Hunter]

On 19/07/16 20:14, Stephen Warren wrote:
> From: Stephen Warren <swarren at nvidia.com>
> 
> 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.
> 
> Signed-off-by: Stephen Warren <swarren at nvidia.com>
> ---
>  .../bindings/i2c/nvidia,tegra186-bpmp-i2c.txt      | 42 ++++++++++++++++++++++
>  1 file changed, 42 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.txt
> 
> diff --git a/Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.txt b/Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.txt
> new file mode 100644
> index 000000000000..fecb549bc250
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.txt
> @@ -0,0 +1,42 @@
> +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 {

Is this "/" intentional?

> +	...
> +
> +	bpmp-i2c {
> +		compatible = "nvidia,tegra186-bpmp-i2c";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		nvidia,bpmp-bus-id = <5>;
> +	};
> +};
> 

Acked-by: Jon Hunter <jonathanh at nvidia.com>

Jon

-- 
nvpublic