diff --git a/src/import/chips/p9/procedures/xml/attribute_info/pm_plat_attributes.xml b/src/import/chips/p9/procedures/xml/attribute_info/pm_plat_attributes.xml
index 76052fee1..a47c6546a 100644
--- a/src/import/chips/p9/procedures/xml/attribute_info/pm_plat_attributes.xml
+++ b/src/import/chips/p9/procedures/xml/attribute_info/pm_plat_attributes.xml
@@ -161,6 +161,7 @@
uint32
+
@@ -174,9 +175,13 @@
p9_set_voltage (tool);
p9_build_pstate_datablock ->
Pstate Parameter Block (PSPB) for PGPE
+
+ *MOST* systems use Bus 0 for VDD. If this is not the case, the value
+ must be appropriately set by the platform (eg MRWB or equivalent
uint8
+
@@ -190,6 +195,9 @@
p9_set_voltage (tool);
p9_build_pstate_datablock ->
Pstate Parameter Block (PSPB) for PGPE
+
+ *MOST* systems use Bus 1 for VDD. If this is not the case, the value
+ must be appropriately set by the platform (eg MRWB or equivalent)
uint8
@@ -206,6 +214,8 @@
p9_set_voltage (tool);
p9_build_pstate_datablock ->
Pstate Parameter Block (PSPB) for PGPE
+
+ For systems where VCS is not connected via AVSBus, set to 0xFF.
uint8
@@ -223,9 +233,14 @@
p9_set_voltage (tool);
p9_build_pstate_datablock ->
Pstate Parameter Block (PSPB) for PGPE
+
+ *MOST* systems use Rail 0 for VDD for the bus on which they are connected.
+ If this is not the case, the value must be appropriately set by the platform
+ (eg MRWB or equivalent)
uint8
+
@@ -240,9 +255,14 @@
p9_set_avsbus_voltage (tool);
p9_build_pstate_datablock ->
Pstate Parameter Block (PSPB) for PGPE
+
+ *MOST* systems use Rail 0 for VDN for the bus on which they are connected.
+ If this is not the case, the value must be appropriately set by the platform
+ (eg MRWB or equivalent)
uint8
+
@@ -250,16 +270,18 @@
TARGET_TYPE_PROC_CHIP
Defines the AVSBus rail selector number (0 - 15) for the VCS VRM on the bus
- defined by ATTR_AVSBUS_VDN_BUSNUM.
+ defined by ATTR_AVSBUS_VCS_BUSNUM.
Producer: Machine Readable Workbook
Consumers:
p9_set_avsbus_voltage (tool);
p9_build_pstate_datablock ->
Pstate Parameter Block (PSPB) for PGPE
+
uint8
+
@@ -961,7 +983,7 @@
-
+
ATTR_PBAX_GROUPID
TARGET_TYPE_PROC_CHIP