[PATCH v2 18/18] Documentation: ACPI for ARM64
From: rdunlap@infradead.org (Randy Dunlap)
Date: 2014-08-04 20:48:25
Also in:
linux-acpi, lkml
On 08/04/14 08:28, Hanjun Guo wrote:
quoted hunk ↗ jump to hunk
From: Graeme Gregory <redacted> Add documentation for the guidelines of how to use ACPI on ARM64. Signed-off-by: Graeme Gregory <redacted> Signed-off-by: Hanjun Guo <redacted> --- Documentation/arm64/arm-acpi.txt | 215 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 215 insertions(+) create mode 100644 Documentation/arm64/arm-acpi.txtdiff --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