[PATCH v2 4/4] Documentation: Add amd_hsmp sysfs file info

[Suma Hegde <Suma.Hegde@amd.com>]

sysfs bin file is added for metrics table information

Signed-off-by: Suma Hegde <Suma.Hegde@amd.com>
Reviewed-by: Naveen Krishna Chatradhi <nchatrad@amd.com>
---
Changes since v1:
New patch

 Documentation/arch/x86/amd_hsmp.rst | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/Documentation/arch/x86/amd_hsmp.rst b/Documentation/arch/x86/amd_hsmp.rst
index 440e4b645a1c..e4f4978f758b 100644
--- a/Documentation/arch/x86/amd_hsmp.rst
+++ b/Documentation/arch/x86/amd_hsmp.rst
@@ -41,6 +41,22 @@ In-kernel integration:
  * Locking across callers is taken care by the driver.
 
 
+HSMP sysfs interface
+====================
+
+1. Metrics table bin sysfs
+
+AMD MI300A MCM provides GET_METRICS_TABLE message to retrieve
+all the system management information from SMU.
+
+The metrics table is made available as hexadecimal sysfs binary file
+under per socket sysfs directory created at
+/sys/devices/platform/amd_hsmp/socket%d/metrics_bin
+
+Metrics table definitions will be documented as part of Public PPR.
+The same is defined in the amd_hsmp.h header.
+
+
 An example
 ==========
 
-- 
2.25.1