On 08/04/14 08:28, Hanjun Guo wrote:
> From: Graeme Gregory <graeme.gregory@xxxxxxxxxx>
>
> Add documentation for the guidelines of how to use ACPI
> on ARM64.
>
> Signed-off-by: Graeme Gregory <graeme.gregory@xxxxxxxxxx>
> Signed-off-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx>
> ---
> Documentation/arm64/arm-acpi.txt | 215 ++++++++++++++++++++++++++++++++++++++
> 1 file changed, 215 insertions(+)
> create mode 100644 Documentation/arm64/arm-acpi.txt
>
> diff --git a/Documentation/arm64/arm-acpi.txt b/Documentation/arm64/arm-acpi.txt
> new file mode 100644
> index 0000000..a6e14a2
> --- /dev/null
> +++ b/Documentation/arm64/arm-acpi.txt
> @@ -0,0 +1,215 @@
> +ACPI on ARMv8 Servers
> +---------------------
> +
...
> +
> +ACPI Detection
> +--------------
> +
> +Drivers should determine their probe() type by checking for ACPI_HANDLE,
> +or .of_node, or other information in the device structure. This is
> +detailed further in the "Driver Recommendations" section.
> +
> +In non-driver code If the presence of ACPI needs to be detected at runtime,
> +then check the value of acpi_disabled. If CONFIG_ACPI not being set,
If CONFIG_ACPI is not set,
> +acpi_disabled will always be 1.
> +
> +Device Enumeration
> +------------------
--
~Randy
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