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| author | Mark Brown <broonie@kernel.org> | 2026-05-29 23:14:24 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2026-05-29 23:14:24 +0100 |
| commit | 133bffdb994e146623bb3aca55c83bd2a83946f3 (patch) | |
| tree | c59bc65b68b2c5166d2320d784f8c0ae54c857cb /Documentation | |
| parent | a7a99e76d203e7f6621804f33148cb7afa7818f2 (diff) | |
| parent | 7a035678fc2bdee81881170764ef08a91a076147 (diff) | |
| download | linux-next-history-133bffdb994e146623bb3aca55c83bd2a83946f3.tar.gz | |
Merge branch 'hyperv-next' of https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/reserved-memory/intel,wakeup-mailbox.yaml | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/reserved-memory/intel,wakeup-mailbox.yaml b/Documentation/devicetree/bindings/reserved-memory/intel,wakeup-mailbox.yaml new file mode 100644 index 0000000000000..4362bc058df41 --- /dev/null +++ b/Documentation/devicetree/bindings/reserved-memory/intel,wakeup-mailbox.yaml @@ -0,0 +1,49 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/reserved-memory/intel,wakeup-mailbox.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Wakeup Mailbox for Intel processors + +description: | + The Wakeup Mailbox provides a mechanism for the operating system to wake up + secondary CPUs on Intel processors. It is an alternative to the INIT-!INIT- + SIPI sequence used on most x86 systems. + + The structure and operation of the mailbox is described in the Multiprocessor + Wakeup Structure of the ACPI specification version 6.6 section 5.2.12.19 [1]. + + The implementation of the mailbox in platform firmware is described in the + Intel TDX Virtual Firmware Design Guide section 4.3.5 [2]. + + 1: https://uefi.org/specs/ACPI/6.6/05_ACPI_Software_Programming_Model.html#multiprocessor-wakeup-structure + 2: https://www.intel.com/content/www/us/en/content-details/733585/intel-tdx-virtual-firmware-design-guide.html + +maintainers: + - Ricardo Neri <ricardo.neri-calderon@linux.intel.com> + +allOf: + - $ref: reserved-memory.yaml + +properties: + compatible: + const: intel,wakeup-mailbox + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + reserved-memory { + #address-cells = <2>; + #size-cells = <1>; + + wakeup-mailbox@ffff0000 { + compatible = "intel,wakeup-mailbox"; + reg = <0x0 0xffff0000 0x1000>; + }; + }; |