Merge pull request #838 from nsait-linaro/acpi-clock-input

add support for ClockInput resources introduced in ACPI v6.5

25 files changed, 357 insertions, 3 deletions

diff --git a/source/common/dmrestag.c b/source/common/dmrestag.c
index d9255c1ab..afacf6f70 100644
--- a/source/common/dmrestag.c
+++ b/source/common/dmrestag.c
@@ -480,6 +480,14 @@ static const ACPI_RESOURCE_TAG      AcpiDmIoFlagTags[] =
     {0,             NULL}
 };
 
+/* Subtype tables for ClockInput descriptor */
+
+static const ACPI_RESOURCE_TAG      AcpiDmClockInputTags[] =
+{
+    {( 6 * 8),      ACPI_RESTAG_FQD},
+    {( 8 * 8),      ACPI_RESTAG_FQN},
+    {0,             NULL}
+};
 
 /*
  * Dispatch table used to obtain the correct tag table for a descriptor.
@@ -531,6 +539,7 @@ static const ACPI_RESOURCE_TAG      *AcpiGbl_ResourceTags[] =
     NULL,                           /* 0x10, ACPI_RESOURCE_NAME_PIN_GROUP */
     AcpiDmPinGroupFunctionTags,     /* 0x11, ACPI_RESOURCE_NAME_PIN_GROUP_FUNCTION */
     AcpiDmPinConfigTags,            /* 0x12, ACPI_RESOURCE_NAME_PIN_GROUP_CONFIG - Same as PinConfig */
+    AcpiDmClockInputTags,           /* 0x13, ACPI_RESOURCE_NAME_CLOCK_INPUT */
 };
 
 /* GPIO Subtypes */
diff --git a/source/compiler/aslcompiler.h b/source/compiler/aslcompiler.h
index e205696c8..ca20de452 100644
--- a/source/compiler/aslcompiler.h
+++ b/source/compiler/aslcompiler.h
@@ -1566,6 +1566,9 @@ ASL_RESOURCE_NODE *
 RsDoPinGroupConfigDescriptor (
     ASL_RESOURCE_INFO       *Info);
 
+ASL_RESOURCE_NODE *
+RsDoClockInputDescriptor (
+    ASL_RESOURCE_INFO       *Info);
 
 /*
  * aslrestype2d - DWord address descriptors
diff --git a/source/compiler/aslcompiler.l b/source/compiler/aslcompiler.l
index 8b79b61ac..fbc38a613 100644
--- a/source/compiler/aslcompiler.l
+++ b/source/compiler/aslcompiler.l
@@ -461,6 +461,7 @@ NamePathTail                [.]{NameSeg}
 "PinGroup"                  { count (1); return (PARSEOP_PINGROUP); }
 "PinGroupConfig"            { count (1); return (PARSEOP_PINGROUPCONFIG); }
 "PinGroupFunction"          { count (1); return (PARSEOP_PINGROUPFUNCTION); }
+"ClockInput"                { count (1); return (PARSEOP_CLOCKINPUT); }
 "QWordIO"                   { count (1); return (PARSEOP_QWORDIO); }
 "QWordMemory"               { count (1); return (PARSEOP_QWORDMEMORY); }
 "QWordSpace"                { count (1); return (PARSEOP_QWORDSPACE); }
@@ -665,6 +666,17 @@ NamePathTail                [.]{NameSeg}
 "PullDown"                  { count (0); return (PARSEOP_PIN_PULLDOWN); }
 "PullNone"                  { count (0); return (PARSEOP_PIN_NOPULL); }
 
+    /* ClockScaleKeyword: Resource Descriptors (ACPI 6.5) */
+
+"Hz"               { count (0); return (PARSEOP_CLOCK_HZ); }
+"KHz"              { count (0); return (PARSEOP_CLOCK_KHZ); }
+"MHz"              { count (0); return (PARSEOP_CLOCK_MHZ); }
+
+    /* ClockModeKeyword: Resource Descriptors (ACPI 6.5) */
+
+"Fixed"               { count (0); return (PARSEOP_CLOCK_FIXED); }
+"Variable"            { count (0); return (PARSEOP_CLOCK_VARIABLE); }
+
     /* PolarityKeyword: Resource Descriptors (ACPI 5.0) */
 
 "PolarityLow"               { count (0); return (PARSEOP_DEVICEPOLARITY_LOW); }
diff --git a/source/compiler/aslkeywords.y b/source/compiler/aslkeywords.y
index c6bb19c75..d559fd0f4 100644
--- a/source/compiler/aslkeywords.y
+++ b/source/compiler/aslkeywords.y
@@ -462,3 +462,14 @@ XferTypeKeyword
     | PARSEOP_XFERTYPE_8_16                 {$$ = TrCreateLeafOp (PARSEOP_XFERTYPE_8_16);}
     | PARSEOP_XFERTYPE_16                   {$$ = TrCreateLeafOp (PARSEOP_XFERTYPE_16);}
     ;
+
+ClockScaleKeyword
+    : PARSEOP_CLOCK_HZ                      {$$ = TrCreateLeafOp (PARSEOP_CLOCK_HZ);}
+    | PARSEOP_CLOCK_KHZ                     {$$ = TrCreateLeafOp (PARSEOP_CLOCK_KHZ);}
+    | PARSEOP_CLOCK_MHZ                     {$$ = TrCreateLeafOp (PARSEOP_CLOCK_MHZ);}
+    ;
+
+ClockModeKeyword
+    : PARSEOP_CLOCK_FIXED                   {$$ = TrCreateLeafOp (PARSEOP_CLOCK_FIXED);}
+    | PARSEOP_CLOCK_VARIABLE                {$$ = TrCreateLeafOp (PARSEOP_CLOCK_VARIABLE);}
+    ;
diff --git a/source/compiler/aslmap.c b/source/compiler/aslmap.c
index c2d35cb6f..71fb5f034 100644
--- a/source/compiler/aslmap.c
+++ b/source/compiler/aslmap.c
@@ -462,6 +462,12 @@ const ASL_MAPPING_ENTRY     AslKeywordMapping [] =
 /* PIN_PULLDEFAULT */           OP_TABLE_ENTRY (AML_BYTE_OP,                0,                              0,                  0),
 /* PIN_PULLDOWN */              OP_TABLE_ENTRY (AML_BYTE_OP,                2,                              0,                  0),
 /* PIN_PULLUP */                OP_TABLE_ENTRY (AML_BYTE_OP,                1,                              0,                  0),
+/* CLOCKINPUT */                OP_TABLE_ENTRY (AML_DEFAULT_ARG_OP,         0,                              0,                  0),
+/* CLOCK_HZ */                  OP_TABLE_ENTRY (AML_BYTE_OP,                0,                              0,                  0),
+/* CLOCK_KHZ */                 OP_TABLE_ENTRY (AML_BYTE_OP,                1,                              0,                  0),
+/* CLOCK_MHZ */                 OP_TABLE_ENTRY (AML_BYTE_OP,                2,                              0,                  0),
+/* CLOCK_FIXED */               OP_TABLE_ENTRY (AML_BYTE_OP,                0,                              0,                  0),
+/* CLOCK_VARIABLE */            OP_TABLE_ENTRY (AML_BYTE_OP,                1,                              0,                  0),
 /* POWERRESOURCE */             OP_TABLE_ENTRY (AML_POWER_RESOURCE_OP,      0,                              OP_AML_PACKAGE,     0),
 /* PROCESSOR */                 OP_TABLE_ENTRY (AML_PROCESSOR_OP,           0,                              OP_AML_PACKAGE,     0),
 /* QWORDCONST */                OP_TABLE_ENTRY (AML_RAW_DATA_QWORD,         0,                              0,                  ACPI_BTYPE_INTEGER),
diff --git a/source/compiler/aslparser.y b/source/compiler/aslparser.y
index 7e7ea9679..3e1c661f4 100644
--- a/source/compiler/aslparser.y
+++ b/source/compiler/aslparser.y
@@ -208,7 +208,7 @@ AslLocalAllocate (
  * These shift/reduce conflicts are expected. There should be zero
  * reduce/reduce conflicts.
  */
-%expect 127
+%expect 128
 
 /*! [Begin] no source code translation */
 
diff --git a/source/compiler/aslresource.c b/source/compiler/aslresource.c
index 2f0127a11..4d20c5e31 100644
--- a/source/compiler/aslresource.c
+++ b/source/compiler/aslresource.c
@@ -762,6 +762,12 @@ RsDoOneResourceDescriptor (
 
     switch (Info->DescriptorTypeOp->Asl.ParseOpcode)
     {
+
+    case PARSEOP_CLOCKINPUT:
+
+        Rnode = RsDoClockInputDescriptor(Info);
+        break;
+
     case PARSEOP_DMA:
 
         Rnode = RsDoDmaDescriptor (Info);
diff --git a/source/compiler/aslresources.y b/source/compiler/aslresources.y
index 38f744a06..52bff9c41 100644
--- a/source/compiler/aslresources.y
+++ b/source/compiler/aslresources.y
@@ -214,6 +214,7 @@ ResourceMacroTerm
     | Memory32Term                  {}
     | PinConfigTerm                 {}
     | PinFunctionTerm               {}
+    | ClockInputTerm                {}
     | PinGroupTerm                  {}
     | PinGroupConfigTerm            {}
     | PinGroupFunctionTerm          {}
@@ -666,6 +667,21 @@ PinFunctionTerm
         error PARSEOP_CLOSE_PAREN   {$$ = AslDoError(); yyclearin;}
     ;
 
+ClockInputTerm
+    : PARSEOP_CLOCKINPUT
+        PARSEOP_OPEN_PAREN          {$<n>$ = TrCreateLeafOp (PARSEOP_CLOCKINPUT);}
+        DWordConstExpr              /* 04: FrequencyNumerator */
+        ',' WordConstExpr           /* 06: FrequencyDivisor */
+        ',' ClockScaleKeyword       /* 08: Scale */
+        ',' ClockModeKeyword        /* 10: Mode*/
+        OptionalStringData          /* 11: ResourceSource */
+        OptionalByteConstExpr       /* 12: ResourceSourceIndex */
+        PARSEOP_CLOSE_PAREN         {$$ = TrLinkOpChildren ($<n>3,6,$4,$6,$8,$10,$11,$12);}
+    | PARSEOP_CLOCKINPUT
+        PARSEOP_OPEN_PAREN
+        error PARSEOP_CLOSE_PAREN   {$$ = AslDoError(); yyclearin;}
+    ;
+
 PinGroupTerm
     : PARSEOP_PINGROUP
         PARSEOP_OPEN_PAREN          {$<n>$ = TrCreateLeafOp (PARSEOP_PINGROUP);}
diff --git a/source/compiler/aslrestype2s.c b/source/compiler/aslrestype2s.c
index 6c904d031..cdb467ff1 100644
--- a/source/compiler/aslrestype2s.c
+++ b/source/compiler/aslrestype2s.c
@@ -1708,6 +1708,115 @@ RsDoPinFunctionDescriptor (
     return (Rnode);
 }
 
+/*******************************************************************************
+ *
+ * FUNCTION:    RsDoClockInputDescriptor
+ *
+ * PARAMETERS:  Info                - Parse Op and resource template offset
+ *
+ * RETURN:      Completed resource node
+ *
+ * DESCRIPTION: Construct a long "ClockInput" descriptor
+ *
+ ******************************************************************************/
+
+ASL_RESOURCE_NODE *
+RsDoClockInputDescriptor (
+    ASL_RESOURCE_INFO       *Info)
+{
+    AML_RESOURCE            *Descriptor;
+    ACPI_PARSE_OBJECT       *InitializerOp;
+    ASL_RESOURCE_NODE       *Rnode;
+    char                    *ResourceSourceString = NULL;
+    UINT8                   *ResourceSourceIndex = NULL;
+    UINT16                  ResSourceLength;
+    UINT16                  DescriptorSize;
+    UINT32                  i;
+    UINT32                  CurrentByteOffset;
+
+    InitializerOp = Info->DescriptorTypeOp->Asl.Child;
+    CurrentByteOffset = Info->CurrentByteOffset;
+
+    /*
+     * Calculate lengths for fields that have variable length:
+     * 1) Resource Source string
+     */
+    ResSourceLength = RsGetStringDataLength (InitializerOp);
+
+    DescriptorSize = ACPI_AML_SIZE_LARGE (AML_RESOURCE_CLOCK_INPUT) + ResSourceLength + 1;
+
+    /* Allocate the local resource node and initialize */
+
+    Rnode = RsAllocateResourceNode (DescriptorSize +
+        sizeof (AML_RESOURCE_LARGE_HEADER));
+
+    Descriptor = Rnode->Buffer;
+    Descriptor->ClockInput.ResourceLength = DescriptorSize;
+    Descriptor->ClockInput.DescriptorType = ACPI_RESOURCE_NAME_CLOCK_INPUT;
+    Descriptor->ClockInput.RevisionId = AML_RESOURCE_CLOCK_INPUT_REVISION;
+
+    /* Build pointers to optional areas */
+
+    if (ResSourceLength){
+        ResourceSourceIndex = ACPI_ADD_PTR (UINT8, Descriptor, sizeof (AML_RESOURCE_CLOCK_INPUT));
+        ResourceSourceString = ACPI_ADD_PTR (char, Descriptor, sizeof (AML_RESOURCE_CLOCK_INPUT) + 1);
+    }
+
+    /* Process all child initialization nodes */
+
+    for (i = 0; InitializerOp; i++)
+    {
+        switch (i)
+        {
+        case 0:
+            Descriptor->ClockInput.FrequencyNumerator = (UINT32)InitializerOp->Asl.Value.Integer;
+            RsCreateDwordField (InitializerOp, ACPI_RESTAG_FQN,
+                CurrentByteOffset + ASL_RESDESC_OFFSET (ClockInput.FrequencyNumerator));
+
+            break;
+
+        case 1:
+            Descriptor->ClockInput.FrequencyDivisor = (UINT16)InitializerOp->Asl.Value.Integer;
+            RsCreateWordField (InitializerOp, ACPI_RESTAG_FQD,
+                CurrentByteOffset + ASL_RESDESC_OFFSET (ClockInput.FrequencyDivisor));
+
+            break;
+
+        case 2:
+            RsSetFlagBits16 (&Descriptor->ClockInput.Flags, InitializerOp, 1, 0);
+            break;
+
+        case 3:
+            RsSetFlagBits16 (&Descriptor->ClockInput.Flags, InitializerOp, 0, 0);
+            break;
+
+        case 4: /* ResSource String [Optional Field] */
+
+            if (ResourceSourceString)
+            {
+                /* Copy string to the descriptor */
+
+                strcpy (ResourceSourceString, InitializerOp->Asl.Value.String);
+            }
+            break;
+
+        case 5: /* ResSource Index [Optional Field] */
+            if (ResourceSourceIndex)
+            {
+                *ResourceSourceIndex = (UINT8) InitializerOp->Asl.Value.Integer;
+            }
+            break;
+
+        default:
+            break;
+        }
+
+        InitializerOp = RsCompleteNodeAndGetNext (InitializerOp);
+    }
+
+    return (Rnode);
+}
+
 
 /*******************************************************************************
  *
diff --git a/source/compiler/asltokens.y b/source/compiler/asltokens.y
index dfd0d1659..48db2e221 100644
--- a/source/compiler/asltokens.y
+++ b/source/compiler/asltokens.y
@@ -399,6 +399,12 @@ NoEcho('
 %token <i> PARSEOP_PIN_PULLDEFAULT
 %token <i> PARSEOP_PIN_PULLDOWN
 %token <i> PARSEOP_PIN_PULLUP
+%token <i> PARSEOP_CLOCKINPUT
+%token <i> PARSEOP_CLOCK_HZ
+%token <i> PARSEOP_CLOCK_KHZ
+%token <i> PARSEOP_CLOCK_MHZ
+%token <i> PARSEOP_CLOCK_FIXED
+%token <i> PARSEOP_CLOCK_VARIABLE
 %token <i> PARSEOP_POWERRESOURCE
 %token <i> PARSEOP_PROCESSOR
 %token <i> PARSEOP_QWORDCONST
diff --git a/source/compiler/asltypes.y b/source/compiler/asltypes.y
index bb0f0e9b4..d5f020d32 100644
--- a/source/compiler/asltypes.y
+++ b/source/compiler/asltypes.y
@@ -359,6 +359,8 @@ NoEcho('
 %type <n> WireModeKeyword
 %type <n> XferSizeKeyword
 %type <n> XferTypeKeyword
+%type <n> ClockScaleKeyword
+%type <n> ClockModeKeyword
 
 /* Types */
 
@@ -411,6 +413,7 @@ NoEcho('
 
 /* Resource Descriptors */
 
+%type <n> ClockInputTerm
 %type <n> ConnectionTerm
 %type <n> Csi2SerialBusTerm
 %type <n> DMATerm
diff --git a/source/components/disassembler/dmresrc.c b/source/components/disassembler/dmresrc.c
index e1dc3475c..644c8a99d 100644
--- a/source/components/disassembler/dmresrc.c
+++ b/source/components/disassembler/dmresrc.c
@@ -203,6 +203,7 @@ static ACPI_RESOURCE_HANDLER    AcpiGbl_DmResourceDispatch [] =
     AcpiDmPinGroupDescriptor,       /* 0x10, ACPI_RESOURCE_NAME_PIN_GROUP */
     AcpiDmPinGroupFunctionDescriptor, /* 0x11, ACPI_RESOURCE_NAME_PIN_GROUP_FUNCTION */
     AcpiDmPinGroupConfigDescriptor, /* 0x12, ACPI_RESOURCE_NAME_PIN_GROUP_CONFIG */
+    AcpiDmClockInputDescriptor,     /* 0x13, ACPI_RESOURCE_NAME_CLOCK_INPUT */
 };
 
 
diff --git a/source/components/disassembler/dmresrcl2.c b/source/components/disassembler/dmresrcl2.c
index d21fd4e0c..1d732e21f 100644
--- a/source/components/disassembler/dmresrcl2.c
+++ b/source/components/disassembler/dmresrcl2.c
@@ -523,6 +523,46 @@ AcpiDmGpioDescriptor (
     }
 }
 
+void
+AcpiDmClockInputDescriptor (
+    ACPI_OP_WALK_INFO       *Info,
+    AML_RESOURCE            *Resource,
+    UINT32                  Length,
+    UINT32                  Level)
+{
+    char                    *DeviceName = NULL;
+    UINT8                   *ResourceIndex = NULL;
+    AcpiDmIndent (Level);
+
+    AcpiOsPrintf ("ClockInput (");
+
+    AcpiOsPrintf ("0x%8.8X, ", Resource->ClockInput.FrequencyNumerator);
+
+    AcpiOsPrintf ("0x%4.4X, ", Resource->ClockInput.FrequencyDivisor);
+
+    AcpiOsPrintf ("%s, ",
+        AcpiGbl_ClockInputScale [ACPI_EXTRACT_2BIT_FLAG (Resource->ClockInput.Flags, 1)]);
+
+    AcpiOsPrintf ("%s, ",
+        AcpiGbl_ClockInputMode [ACPI_GET_1BIT_FLAG (Resource->ClockInput.Flags)]);
+
+    if (Length > sizeof(Resource->ClockInput))
+    {
+        DeviceName = ACPI_ADD_PTR (char,
+            Resource, sizeof(Resource->ClockInput)+1),
+        AcpiUtPrintString (DeviceName, ACPI_UINT16_MAX);
+
+        AcpiOsPrintf (", ");
+        ResourceIndex = ACPI_ADD_PTR (UINT8,
+            Resource, sizeof(Resource->ClockInput)),
+
+        AcpiOsPrintf ("0x%2.2X", *ResourceIndex);
+    }
+
+    AcpiOsPrintf (")\n");
+
+}
+
 /*******************************************************************************
  *
  * FUNCTION:    AcpiDmPinFunctionDescriptor
diff --git a/source/components/resources/rscalc.c b/source/components/resources/rscalc.c
index a244ee32a..623364b10 100644
--- a/source/components/resources/rscalc.c
+++ b/source/components/resources/rscalc.c
@@ -480,6 +480,13 @@ AcpiRsGetAmlLength (
 
             break;
 
+        case ACPI_RESOURCE_TYPE_CLOCK_INPUT:
+
+            TotalSize = (ACPI_RS_LENGTH) (TotalSize +
+                Resource->Data.ClockInput.ResourceSource.StringLength);
+
+            break;
+
 
         case ACPI_RESOURCE_TYPE_SERIAL_BUS:
 
@@ -789,6 +796,12 @@ AcpiRsGetListLength (
 
             break;
 
+        case ACPI_RESOURCE_NAME_CLOCK_INPUT:
+            ExtraStructBytes = AcpiRsStreamOptionLength (
+                ResourceLength, MinimumAmlResourceLength);
+
+            break;
+
         default:
 
             break;
diff --git a/source/components/resources/rsdumpinfo.c b/source/components/resources/rsdumpinfo.c
index 42a5e33bb..f15b7b981 100644
--- a/source/components/resources/rsdumpinfo.c
+++ b/source/components/resources/rsdumpinfo.c
@@ -374,6 +374,17 @@ ACPI_RSDUMP_INFO        AcpiRsDumpPinFunction[10] =
     {ACPI_RSD_SHORTLISTX,ACPI_RSD_OFFSET (PinFunction.VendorData),          "VendorData",               NULL},
 };
 
+ACPI_RSDUMP_INFO        AcpiRsDumpClockInput[7] =
+{
+    {ACPI_RSD_TITLE,    ACPI_RSD_TABLE_SIZE (AcpiRsDumpClockInput),         "ClockInput",            NULL},
+    {ACPI_RSD_UINT8,    ACPI_RSD_OFFSET (ClockInput.RevisionId),            "RevisionId",            NULL},
+    {ACPI_RSD_UINT32,   ACPI_RSD_OFFSET (ClockInput.FrequencyNumerator),    "FrequencyNumerator",    NULL},
+    {ACPI_RSD_UINT32,   ACPI_RSD_OFFSET (ClockInput.FrequencyDivisor),      "FrequencyDivisor",      NULL},
+    {ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET (ClockInput.Scale),                 "Scale",                 AcpiGbl_ClockInputScale},
+    {ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET (ClockInput.Mode),                  "Mode",                  AcpiGbl_ClockInputMode},
+    {ACPI_RSD_SOURCE,   ACPI_RSD_OFFSET (ClockInput.ResourceSource),        "ResourceSource",        NULL},
+};
+
 ACPI_RSDUMP_INFO        AcpiRsDumpPinConfig[11] =
 {
     {ACPI_RSD_TITLE,    ACPI_RSD_TABLE_SIZE (AcpiRsDumpPinConfig),          "PinConfig",                NULL},
diff --git a/source/components/resources/rsinfo.c b/source/components/resources/rsinfo.c
index 976b7e7b3..551b647b7 100644
--- a/source/components/resources/rsinfo.c
+++ b/source/components/resources/rsinfo.c
@@ -197,6 +197,7 @@ ACPI_RSCONVERT_INFO         *AcpiGbl_SetResourceDispatch[] =
     AcpiRsConvertPinGroup,          /* 0x16, ACPI_RESOURCE_TYPE_PIN_GROUP */
     AcpiRsConvertPinGroupFunction,  /* 0x17, ACPI_RESOURCE_TYPE_PIN_GROUP_FUNCTION */
     AcpiRsConvertPinGroupConfig,    /* 0x18, ACPI_RESOURCE_TYPE_PIN_GROUP_CONFIG */
+    AcpiRsConvertClockInput,        /* 0x19, ACPI_RESOURCE_TYPE_CLOCK_INPUT */
 };
 
 /* Dispatch tables for AML-to-resource (Get Resource) conversion functions */
@@ -243,6 +244,7 @@ ACPI_RSCONVERT_INFO         *AcpiGbl_GetResourceDispatch[] =
     AcpiRsConvertPinGroup,          /* 0x10, ACPI_RESOURCE_NAME_PIN_GROUP */
     AcpiRsConvertPinGroupFunction,  /* 0x11, ACPI_RESOURCE_NAME_PIN_GROUP_FUNCTION */
     AcpiRsConvertPinGroupConfig,    /* 0x12, ACPI_RESOURCE_NAME_PIN_GROUP_CONFIG */
+    AcpiRsConvertClockInput,        /* 0x13, ACPI_RESOURCE_NAME_CLOCK_INPUT */
 };
 
 /* Subtype table for SerialBus -- I2C, SPI, UART, and CSI2 */
@@ -288,6 +290,7 @@ ACPI_RSDUMP_INFO            *AcpiGbl_DumpResourceDispatch[] =
     AcpiRsDumpPinGroup,             /* ACPI_RESOURCE_TYPE_PIN_GROUP */
     AcpiRsDumpPinGroupFunction,     /* ACPI_RESOURCE_TYPE_PIN_GROUP_FUNCTION */
     AcpiRsDumpPinGroupConfig,       /* ACPI_RESOURCE_TYPE_PIN_GROUP_CONFIG */
+    AcpiRsDumpClockInput,           /* ACPI_RESOURCE_TYPE_CLOCK_INPUT */
 };
 
 ACPI_RSDUMP_INFO            *AcpiGbl_DumpSerialBusDispatch[] =
@@ -333,6 +336,7 @@ const UINT8                 AcpiGbl_AmlResourceSizes[] =
     sizeof (AML_RESOURCE_PIN_GROUP),        /* ACPI_RESOURCE_TYPE_PIN_GROUP */
     sizeof (AML_RESOURCE_PIN_GROUP_FUNCTION), /* ACPI_RESOURCE_TYPE_PIN_GROUP_FUNCTION */
     sizeof (AML_RESOURCE_PIN_GROUP_CONFIG), /* ACPI_RESOURCE_TYPE_PIN_GROUP_CONFIG */
+    sizeof (AML_RESOURCE_CLOCK_INPUT),      /* ACPI_RESOURCE_TYPE_CLOCK_INPUT */
 };
 
 
@@ -378,6 +382,7 @@ const UINT8                 AcpiGbl_ResourceStructSizes[] =
     ACPI_RS_SIZE (ACPI_RESOURCE_PIN_GROUP),
     ACPI_RS_SIZE (ACPI_RESOURCE_PIN_GROUP_FUNCTION),
     ACPI_RS_SIZE (ACPI_RESOURCE_PIN_GROUP_CONFIG),
+    ACPI_RS_SIZE (ACPI_RESOURCE_CLOCK_INPUT),
 };
 
 const UINT8                 AcpiGbl_AmlResourceSerialBusSizes[] =
diff --git a/source/components/resources/rsserial.c b/source/components/resources/rsserial.c
index 1b4b2180d..4c19f8908 100644
--- a/source/components/resources/rsserial.c
+++ b/source/components/resources/rsserial.c
@@ -256,6 +256,50 @@ ACPI_RSCONVERT_INFO     AcpiRsConvertGpio[18] =
 
 /*******************************************************************************
  *
+ * AcpiRsConvertClockInput
+ *
+ ******************************************************************************/
+
+ACPI_RSCONVERT_INFO     AcpiRsConvertClockInput[8] =
+{
+    {ACPI_RSC_INITGET,  ACPI_RESOURCE_TYPE_CLOCK_INPUT,
+                        ACPI_RS_SIZE (ACPI_RESOURCE_CLOCK_INPUT),
+                        ACPI_RSC_TABLE_SIZE (AcpiRsConvertClockInput)},
+
+    {ACPI_RSC_INITSET,  ACPI_RESOURCE_NAME_CLOCK_INPUT,
+                        sizeof (AML_RESOURCE_CLOCK_INPUT),
+                        0},
+
+    {ACPI_RSC_MOVE8,    ACPI_RS_OFFSET (Data.ClockInput.RevisionId),
+                        AML_OFFSET (ClockInput.RevisionId),
+                        1},
+
+    {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET (Data.ClockInput.Mode),
+                        AML_OFFSET (ClockInput.Flags),
+                        0},
+
+    {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET (Data.ClockInput.Scale),
+                        AML_OFFSET (ClockInput.Flags),
+                        1},
+
+    {ACPI_RSC_MOVE16,   ACPI_RS_OFFSET (Data.ClockInput.FrequencyDivisor),
+                        AML_OFFSET (ClockInput.FrequencyDivisor),
+                        2},
+
+    {ACPI_RSC_MOVE32,   ACPI_RS_OFFSET (Data.ClockInput.FrequencyNumerator),
+                        AML_OFFSET (ClockInput.FrequencyNumerator),
+                        4},
+
+    /* Resource Source */
+    {ACPI_RSC_SOURCE,    ACPI_RS_OFFSET (Data.ClockInput.ResourceSource),
+                        0,
+                        sizeof(AML_RESOURCE_CLOCK_INPUT)},
+
+};
+
+
+/*******************************************************************************
+ *
  * AcpiRsConvertPinfunction
  *
  ******************************************************************************/
diff --git a/source/components/utilities/utresdecode.c b/source/components/utilities/utresdecode.c
index 3003925a9..667f12f8e 100644
--- a/source/components/utilities/utresdecode.c
+++ b/source/components/utilities/utresdecode.c
@@ -467,4 +467,17 @@ const char                      *AcpiGbl_PtypDecode[] =
     "Input Schmitt Trigger",
 };
 
+const char                      *AcpiGbl_ClockInputMode[] =
+{
+    "Fixed",
+    "Variable",
+};
+
+const char                      *AcpiGbl_ClockInputScale[] =
+{
+    "Hz",
+    "KHz",
+    "MHz",
+};
+
 #endif
diff --git a/source/components/utilities/utresrc.c b/source/components/utilities/utresrc.c
index 03e93be34..7898e9929 100644
--- a/source/components/utilities/utresrc.c
+++ b/source/components/utilities/utresrc.c
@@ -204,6 +204,8 @@ const UINT8                 AcpiGbl_ResourceAmlSizes[] =
     ACPI_AML_SIZE_LARGE (AML_RESOURCE_PIN_GROUP),
     ACPI_AML_SIZE_LARGE (AML_RESOURCE_PIN_GROUP_FUNCTION),
     ACPI_AML_SIZE_LARGE (AML_RESOURCE_PIN_GROUP_CONFIG),
+    ACPI_AML_SIZE_LARGE (AML_RESOURCE_CLOCK_INPUT),
+
 };
 
 const UINT8                 AcpiGbl_ResourceAmlSerialBusSizes[] =
@@ -264,6 +266,7 @@ static const UINT8          AcpiGbl_ResourceTypes[] =
     ACPI_VARIABLE_LENGTH,           /* 10 PinGroup */
     ACPI_VARIABLE_LENGTH,           /* 11 PinGroupFunction */
     ACPI_VARIABLE_LENGTH,           /* 12 PinGroupConfig */
+    ACPI_VARIABLE_LENGTH,           /* 13 ClockInput */
 };
 
 
diff --git a/source/include/acdisasm.h b/source/include/acdisasm.h
index e8a559fda..32a8c818f 100644
--- a/source/include/acdisasm.h
+++ b/source/include/acdisasm.h
@@ -1339,6 +1339,12 @@ AcpiDmVendorCommon (
     UINT32                  Length,
     UINT32                  Level);
 
+void
+AcpiDmClockInputDescriptor (
+    ACPI_OP_WALK_INFO       *Info,
+    AML_RESOURCE            *Resource,
+    UINT32                  Length,
+    UINT32                  Level);
 
 /*
  * dmresrcs
diff --git a/source/include/aclocal.h b/source/include/aclocal.h
index 08e18500d..9c090a07d 100644
--- a/source/include/aclocal.h
+++ b/source/include/aclocal.h
@@ -1452,7 +1452,8 @@ typedef struct acpi_port_info
 #define ACPI_RESOURCE_NAME_PIN_GROUP            0x90
 #define ACPI_RESOURCE_NAME_PIN_GROUP_FUNCTION   0x91
 #define ACPI_RESOURCE_NAME_PIN_GROUP_CONFIG     0x92
-#define ACPI_RESOURCE_NAME_LARGE_MAX            0x92
+#define ACPI_RESOURCE_NAME_CLOCK_INPUT          0x93
+#define ACPI_RESOURCE_NAME_LARGE_MAX            0x94
 
 
 /*****************************************************************************
diff --git a/source/include/acresrc.h b/source/include/acresrc.h
index 7d7fda538..85be65dc1 100644
--- a/source/include/acresrc.h
+++ b/source/include/acresrc.h
@@ -506,6 +506,7 @@ extern ACPI_RSCONVERT_INFO      AcpiRsConvertPinConfig[];
 extern ACPI_RSCONVERT_INFO      AcpiRsConvertPinGroup[];
 extern ACPI_RSCONVERT_INFO      AcpiRsConvertPinGroupFunction[];
 extern ACPI_RSCONVERT_INFO      AcpiRsConvertPinGroupConfig[];
+extern ACPI_RSCONVERT_INFO      AcpiRsConvertClockInput[];
 
 /* These resources require separate get/set tables */
 
@@ -562,6 +563,7 @@ extern ACPI_RSDUMP_INFO         AcpiRsDumpPinConfig[];
 extern ACPI_RSDUMP_INFO         AcpiRsDumpPinGroup[];
 extern ACPI_RSDUMP_INFO         AcpiRsDumpPinGroupFunction[];
 extern ACPI_RSDUMP_INFO         AcpiRsDumpPinGroupConfig[];
+extern ACPI_RSDUMP_INFO         AcpiRsDumpClockInput[];
 #endif
 
 #endif  /* __ACRESRC_H__ */
diff --git a/source/include/acrestyp.h b/source/include/acrestyp.h
index a8299fbc0..10e8ff89f 100644
--- a/source/include/acrestyp.h
+++ b/source/include/acrestyp.h
@@ -770,6 +770,16 @@ typedef struct acpi_resource_pin_config
 
 } ACPI_RESOURCE_PIN_CONFIG;
 
+typedef struct acpi_resource_clock_input
+{
+    UINT8                           RevisionId;
+    UINT8                           Mode;
+    UINT8                           Scale;
+    UINT16                          FrequencyDivisor;
+    UINT32                          FrequencyNumerator;
+    ACPI_RESOURCE_SOURCE            ResourceSource;
+} ACPI_RESOURCE_CLOCK_INPUT;
+
 /* Values for PinConfigType field above */
 
 #define ACPI_PIN_CONFIG_DEFAULT                 0
@@ -853,7 +863,8 @@ typedef struct acpi_resource_pin_group_config
 #define ACPI_RESOURCE_TYPE_PIN_GROUP            22  /* ACPI 6.2 */
 #define ACPI_RESOURCE_TYPE_PIN_GROUP_FUNCTION   23  /* ACPI 6.2 */
 #define ACPI_RESOURCE_TYPE_PIN_GROUP_CONFIG     24  /* ACPI 6.2 */
-#define ACPI_RESOURCE_TYPE_MAX                  24
+#define ACPI_RESOURCE_TYPE_CLOCK_INPUT          25  /* ACPI 6.5 */
+#define ACPI_RESOURCE_TYPE_MAX                  25
 
 /* Master union for resource descriptors */
 
@@ -888,6 +899,7 @@ typedef union acpi_resource_data
     ACPI_RESOURCE_PIN_GROUP                 PinGroup;
     ACPI_RESOURCE_PIN_GROUP_FUNCTION        PinGroupFunction;
     ACPI_RESOURCE_PIN_GROUP_CONFIG          PinGroupConfig;
+    ACPI_RESOURCE_CLOCK_INPUT               ClockInput;
 
     /* Common fields */
 
diff --git a/source/include/acutils.h b/source/include/acutils.h
index e9e627499..bdca11c98 100644
--- a/source/include/acutils.h
+++ b/source/include/acutils.h
@@ -196,6 +196,8 @@ extern const char                       *AcpiGbl_SbDecode[];
 extern const char                       *AcpiGbl_FcDecode[];
 extern const char                       *AcpiGbl_PtDecode[];
 extern const char                       *AcpiGbl_PtypDecode[];
+extern const char                       *AcpiGbl_ClockInputMode[];
+extern const char                       *AcpiGbl_ClockInputScale[];
 #endif
 
 /*
diff --git a/source/include/amlresrc.h b/source/include/amlresrc.h
index 74cfafbf1..1ad70d171 100644
--- a/source/include/amlresrc.h
+++ b/source/include/amlresrc.h
@@ -213,6 +213,8 @@
 #define ACPI_RESTAG_TYPE                        "_TTP"  /* Translation(1), Static (0) */
 #define ACPI_RESTAG_XFERTYPE                    "_SIZ"  /* 8(0), 8And16(1), 16(2) */
 #define ACPI_RESTAG_VENDORDATA                  "_VEN"
+#define ACPI_RESTAG_FQN                         "_FQN"
+#define ACPI_RESTAG_FQD                         "_FQD"
 
 
 /* Default sizes for "small" resource descriptors */
@@ -703,6 +705,23 @@ typedef struct aml_resource_pin_config
 
 } AML_RESOURCE_PIN_CONFIG;
 
+#define AML_RESOURCE_CLOCK_INPUT_REVISION      1       /* ACPI 6.5 */
+
+typedef struct aml_resource_clock_input
+{
+    AML_RESOURCE_LARGE_HEADER_COMMON
+    UINT8                           RevisionId;
+    UINT16                          Flags;
+    UINT16                          FrequencyDivisor;
+    UINT32                          FrequencyNumerator;
+    /*
+     * Optional fields follow immediately:
+     * 1) Resource Source index
+     * 2) Resource Source String
+     */
+} AML_RESOURCE_CLOCK_INPUT;
+
+
 #define AML_RESOURCE_PIN_CONFIG_REVISION      1       /* ACPI 6.2 */
 
 typedef struct aml_resource_pin_group
@@ -819,6 +838,7 @@ typedef union aml_resource
     AML_RESOURCE_PIN_GROUP                  PinGroup;
     AML_RESOURCE_PIN_GROUP_FUNCTION         PinGroupFunction;
     AML_RESOURCE_PIN_GROUP_CONFIG           PinGroupConfig;
+    AML_RESOURCE_CLOCK_INPUT                ClockInput;
 
     /* Utility overlays */