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Platform/Sgi: Fix ACPI Low Power Idle states for RD-N1-Edge-X2

RD-N1-Edge-X2 platform supports only the platform co-ordinated LPI. So
fix the LPI Level ID value accordingly.

Additionally, as this platform does not support residency counter, clear
the residency counter frequency from _LPI object's control method.

Signed-off-by: Pranav Madhu <pranav.madhu@arm.com>
Reviewed-by: Pierre Gondois <pierre.gondois@arm.com>
Reviewed-by: Thomas Abraham <thomas.abraham@arm.com>
Pranav Madhu 2 years ago
parent
commit
c361293944
1 changed files with 4 additions and 4 deletions
  1. 4 4
      Platform/ARM/SgiPkg/AcpiTables/RdN1EdgeX2/Dsdt.asl

+ 4 - 4
Platform/ARM/SgiPkg/AcpiTables/RdN1EdgeX2/Dsdt.asl

@@ -60,7 +60,7 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD", "ARMSGI",
         1150,                 // Wake latency (uS)
         1,                    // Flags
         1,                    // Arch Context Flags
-        100,                  // Residency Counter Frequency
+        0,                    // Residency Counter Frequency
         0,                    // No Parent State
         0x00000020,           // Integer Entry method
         ResourceTemplate () { // Null Residency Counter
@@ -75,14 +75,14 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD", "ARMSGI",
 
     Name (PLPI, Package () {  /* LPI for Processor, support 2 LPI states */
       0,                      // Version
-      1,                      // Level Index
+      0,                      // Level Index
       2,                      // Count
       Package () {            // WFI for CPU
         1,                    // Min residency (uS)
         1,                    // Wake latency (uS)
         1,                    // Flags
         0,                    // Arch Context lost Flags (no loss)
-        100,                  // Residency Counter Frequency
+        0,                    // Residency Counter Frequency
         0,                    // No parent state
         ResourceTemplate () { // Register Entry method
           Register (FFixedHW,
@@ -105,7 +105,7 @@ DefinitionBlock ("DsdtTable.aml", "DSDT", 2, "ARMLTD", "ARMSGI",
         350,                  // Wake latency (uS)
         1,                    // Flags
         1,                    // Arch Context lost Flags (Core context lost)
-        100,                  // Residency Counter Frequency
+        0,                    // Residency Counter Frequency
         1,                    // Parent node can be in any shallower state
         ResourceTemplate () { // Register Entry method
           Register (FFixedHW,