From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:13:47 +0200 Subject: Adding upstream version 2.8.0+dfsg. Signed-off-by: Daniel Baumann --- docs/components/fconf/mpmm-bindings.rst | 48 +++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 docs/components/fconf/mpmm-bindings.rst (limited to 'docs/components/fconf/mpmm-bindings.rst') diff --git a/docs/components/fconf/mpmm-bindings.rst b/docs/components/fconf/mpmm-bindings.rst new file mode 100644 index 0000000..d3cc857 --- /dev/null +++ b/docs/components/fconf/mpmm-bindings.rst @@ -0,0 +1,48 @@ +Maximum Power Mitigation Mechanism (MPMM) Bindings +================================================== + +|MPMM| support cannot be determined at runtime by the firmware. Instead, these +DTB bindings allow the platform to communicate per-core support for |MPMM| via +the ``HW_CONFIG`` device tree blob. + +Bindings +^^^^^^^^ + +.. contents:: + :local: + +``/cpus/cpus/cpu*`` node properties +""""""""""""""""""""""""""""""""""" + +The ``cpu`` node has been augmented to allow the platform to indicate support +for |MPMM| on a given core. + ++-------------------+-------+-------------+------------------------------------+ +| Property name | Usage | Value type | Description | ++===================+=======+=============+====================================+ +| ``supports-mpmm`` | O | ```` | If present, indicates that |MPMM| | +| | | | is available on this core. | ++-------------------+-------+-------------+------------------------------------+ + +Example +^^^^^^^ + +An example system offering two cores, one with support for |MPMM| and one +without, can be described as follows: + +.. code-block:: + + cpus { + #address-cells = <2>; + #size-cells = <0>; + + cpu0@00000 { + ... + + supports-mpmm; + }; + + cpu1@00100 { + ... + }; + } -- cgit v1.2.3