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-rw-r--r--src/mainboard/google/samus/acpi/thermal.asl100
-rw-r--r--src/mainboard/google/samus/acpi_tables.c10
-rw-r--r--src/mainboard/google/samus/thermal.h18
3 files changed, 40 insertions, 88 deletions
diff --git a/src/mainboard/google/samus/acpi/thermal.asl b/src/mainboard/google/samus/acpi/thermal.asl
index b61baeb261..a622d6cba6 100644
--- a/src/mainboard/google/samus/acpi/thermal.asl
+++ b/src/mainboard/google/samus/acpi/thermal.asl
@@ -21,6 +21,20 @@
Scope (\_TZ)
{
+ // Handler for throttle requests on this platform
+ // 0 = Stop throttling
+ // 1 = Start throttling
+ Method (THRT, 1, Serialized)
+ {
+ If (LEqual (Arg0, 0)) {
+ /* Disable Power Limit */
+ \_SB.PCI0.MCHC.CTLD ()
+ } Else {
+ /* Enable Power Limit */
+ \_SB.PCI0.MCHC.CTLE (\F0PW)
+ }
+ }
+
ThermalZone (THRM)
{
Name (_TC1, 0x02)
@@ -61,7 +75,7 @@ Scope (\_TZ)
Return (\PPKG ())
}
- Method (_TMP, 0, Serialized)
+ Method (TCHK, 0, Serialized)
{
// Get Temperature from TIN# set in NVS
Store (\_SB.PCI0.LPCB.EC0.TINS (TMPS), Local0)
@@ -94,79 +108,29 @@ Scope (\_TZ)
Return (Local0)
}
- /* CTDP Down */
- Method (_AC0) {
- If (LLessEqual (\FLVL, 0)) {
- Return (CTOK (\F0OF))
- } Else {
- Return (CTOK (\F0ON))
- }
- }
+ Method (_TMP, 0, Serialized)
+ {
+ // Get temperature from EC in deci-kelvin
+ Store (TCHK (), Local0)
- /* CTDP Nominal */
- Method (_AC1) {
- If (LLessEqual (\FLVL, 1)) {
- Return (CTOK (\F1OF))
- } Else {
- Return (CTOK (\F1ON))
- }
- }
+ // Critical temperature in deci-kelvin
+ Store (CTOK (\TCRT), Local1)
- Name (_AL0, Package () { TDP0 })
- Name (_AL1, Package () { TDP1 })
+ If (LGreaterEqual (Local0, Local1)) {
+ Store ("CRITICAL TEMPERATURE", Debug)
+ Store (Local0, Debug)
- PowerResource (TNP0, 0, 0)
- {
- Method (_STA) {
- If (LLessEqual (\FLVL, 0)) {
- Return (One)
- } Else {
- Return (Zero)
- }
- }
- Method (_ON) {
- Store (0, \FLVL)
- \_SB.PCI0.MCHC.STND ()
- Notify (\_TZ.THRM, 0x81)
- }
- Method (_OFF) {
- Store (1, \FLVL)
- \_SB.PCI0.MCHC.STDN ()
- Notify (\_TZ.THRM, 0x81)
- }
- }
+ // Wait 1 second for EC to re-poll
+ Sleep (1000)
- PowerResource (TNP1, 0, 0)
- {
- Method (_STA) {
- If (LLessEqual (\FLVL, 1)) {
- Return (One)
- } Else {
- Return (Zero)
- }
- }
- Method (_ON) {
- Store (1, \FLVL)
- Notify (\_TZ.THRM, 0x81)
- }
- Method (_OFF) {
- Store (1, \FLVL)
- Notify (\_TZ.THRM, 0x81)
- }
- }
+ // Re-read temperature from EC
+ Store (TCHK (), Local0)
- Device (TDP0)
- {
- Name (_HID, EISAID ("PNP0C0B"))
- Name (_UID, 0)
- Name (_PR0, Package () { TNP0 })
- }
+ Store ("RE-READ TEMPERATURE", Debug)
+ Store (Local0, Debug)
+ }
- Device (TDP1)
- {
- Name (_HID, EISAID ("PNP0C0B"))
- Name (_UID, 1)
- Name (_PR0, Package () { TNP1 })
+ Return (Local0)
}
}
}
diff --git a/src/mainboard/google/samus/acpi_tables.c b/src/mainboard/google/samus/acpi_tables.c
index a96cb2437d..dd73d2986d 100644
--- a/src/mainboard/google/samus/acpi_tables.c
+++ b/src/mainboard/google/samus/acpi_tables.c
@@ -44,17 +44,11 @@ unsigned long acpi_create_slic(unsigned long current);
static void acpi_update_thermal_table(global_nvs_t *gnvs)
{
- gnvs->tmps = CTDP_SENSOR_ID;
-
- gnvs->f1of = CTDP_NOMINAL_THRESHOLD_OFF;
- gnvs->f1on = CTDP_NOMINAL_THRESHOLD_ON;
-
- gnvs->f0of = CTDP_DOWN_THRESHOLD_OFF;
- gnvs->f0on = CTDP_DOWN_THRESHOLD_ON;
-
+ gnvs->tmps = TEMPERATURE_SENSOR_ID;
gnvs->tcrt = CRITICAL_TEMPERATURE;
gnvs->tpsv = PASSIVE_TEMPERATURE;
gnvs->tmax = MAX_TEMPERATURE;
+ gnvs->f0pw = EC_THROTTLE_POWER_LIMIT;
gnvs->flvl = 1;
}
diff --git a/src/mainboard/google/samus/thermal.h b/src/mainboard/google/samus/thermal.h
index 75f247c1ed..89069a62f2 100644
--- a/src/mainboard/google/samus/thermal.h
+++ b/src/mainboard/google/samus/thermal.h
@@ -20,24 +20,18 @@
#ifndef THERMAL_H
#define THERMAL_H
-/* Config TDP Sensor ID */
-#define CTDP_SENSOR_ID 0 /* PECI */
+#define TEMPERATURE_SENSOR_ID 0 /* PECI */
-/* Config TDP Nominal */
-#define CTDP_NOMINAL_THRESHOLD_OFF 0
-#define CTDP_NOMINAL_THRESHOLD_ON 0
-
-/* Config TDP Down */
-#define CTDP_DOWN_THRESHOLD_OFF 80
-#define CTDP_DOWN_THRESHOLD_ON 90
+/* Power level to set when EC requests throttle */
+#define EC_THROTTLE_POWER_LIMIT 12 /* 12W */
/* Temperature which OS will shutdown at */
-#define CRITICAL_TEMPERATURE 104
+#define CRITICAL_TEMPERATURE 99
/* Temperature which OS will throttle CPU */
-#define PASSIVE_TEMPERATURE 100
+#define PASSIVE_TEMPERATURE 95
/* Tj_max value for calculating PECI CPU temperature */
-#define MAX_TEMPERATURE 105
+#define MAX_TEMPERATURE 100
#endif