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-rw-r--r--src/mainboard/amd/persimmon/devicetree.cb49
1 files changed, 49 insertions, 0 deletions
diff --git a/src/mainboard/amd/persimmon/devicetree.cb b/src/mainboard/amd/persimmon/devicetree.cb
index 178fd76eef..bd40a43a62 100644
--- a/src/mainboard/amd/persimmon/devicetree.cb
+++ b/src/mainboard/amd/persimmon/devicetree.cb
@@ -91,6 +91,55 @@ chip northbridge/amd/agesa/family14/root_complex
device pci 16.2 off end # EHCI USB3
register "gpp_configuration" = "0" #4:0:0:0 (really need to disable all 4 somehow)
register "boot_switch_sata_ide" = "0" # 0: boot from SATA. 1: IDE
+
+ #set up SB800 Fan control registers and IMC fan controls
+ register "imc_port_address" = "0x6E" # 0x2E and 0x6E are common
+ register "fan0_enabled" = "1"
+ register "fan1_enabled" = "1"
+ register "imc_fan_zone0_enabled" = "1"
+ register "imc_fan_zone1_enabled" = "1"
+
+ register "fan0_config_vals" = "{ \
+ FAN_INPUT_INTERNAL_DIODE, FAN_POLARITY_HIGH, \
+ FREQ_25KHZ, 0x08, 0x00, 0x00, 0x00, 0x00,\
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }"
+ register "fan1_config_vals" = "{ \
+ FAN_INPUT_INTERNAL_DIODE, FAN_POLARITY_HIGH, \
+ FREQ_25KHZ, 0x10, 0x00, 0x00, 0x00, 0x00, \
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }"
+
+ register "imc_zone0_mode1" = " \
+ IMC_MODE1_FAN_ENABLED | IMC_MODE1_FAN_IMC_CONTROLLED | \
+ IMC_MODE1_FAN_STEP_MODE | IMC_MODE1_FANOUT0"
+ register "imc_zone0_mode2" = " IMC_MODE2_TEMPIN_SB_TSI | \
+ IMC_MODE2_FANIN0 | IMC_MODE2_TEMP_AVERAGING_DISABLED"
+ register "imc_zone0_temp_offset" = "0x00" # No temp offset
+ register "imc_zone0_hysteresis" = "0x05" # Degrees C Hysteresis
+ register "imc_zone0_smbus_addr" = "0x98" # Temp Sensor SMBus address
+ register "imc_zone0_smbus_num" = "IMC_TEMP_SENSOR_ON_SMBUS_3" # SMBUS number
+ register "imc_zone0_pwm_step" = "0x01" # Fan PWM stepping rate
+ register "imc_zone0_ramping" = "0x00" # Disable Fan PWM ramping and stepping
+
+ register "imc_zone1_mode1" = " \
+ IMC_MODE1_FAN_ENABLED | IMC_MODE1_FAN_IMC_CONTROLLED | \
+ IMC_MODE1_FAN_STEP_MODE | IMC_MODE1_FANOUT1"
+ register "imc_zone1_mode2" = " IMC_MODE2_TEMPIN_SB_TSI | \
+ IMC_MODE2_FANIN1 | IMC_MODE2_TEMP_AVERAGING_DISABLED"
+ register "imc_zone1_temp_offset" = "0x00" # No temp offset
+ register "imc_zone1_hysteresis" = "0x05" # Degrees C Hysteresis
+ register "imc_zone1_smbus_addr" = "0x98" # Temp Sensor SMBus address
+ register "imc_zone1_smbus_num" = "IMC_TEMP_SENSOR_ON_SMBUS_3" # SMBUS number
+ register "imc_zone1_pwm_step" = "0x01" # Fan PWM stepping rate
+ register "imc_zone1_ramping" = "0x00" # Disable Fan PWM ramping and stepping
+
+ # T56N has a Maximum operating temperature of 90C
+ # ZONEX_THRESHOLDS - _AC0 - _AC7, _CRT - Temp Threshold in degrees C
+ # ZONEX_FANSPEEDS - Fan speeds as a "percentage"
+ register "imc_zone0_thresholds" = "{ 87, 82, 77, 72, 65, 1, 0, 0, 90 }"
+ register "imc_zone0_fanspeeds" = "{100, 7, 5, 4, 3, 2, 0, 0 }"
+ register "imc_zone1_thresholds" = "{ 85, 80, 75, 65, 1, 0, 0, 0, 90 }"
+ register "imc_zone1_fanspeeds" = "{100, 10, 6, 4, 3, 0, 0, 0 }"
+
end #southbridge/amd/cimx/sb800
# end # device pci 18.0
# These seem unnecessary