GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
@@ -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     | ``<empty>`` | 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 {
+            ...
+        };
+    }