Raul E Rangel
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9bf32b9701
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drivers/acpi: Add a chip driver to generate thermal zone
Given the following device tree entry:
chip drivers/acpi/thermal_zone
register "description" = ""CPU""
use chrome_ec as temperature_controller
register "sensor_id" = "0"
register "polling_period" = "10"
register "critical_temperature" = "91"
register "passive_config" = "{
.temperature = 85,
}"
register "use_acpi1_thermal_zone_scope" = "true"
device generic 0 on end
end
It will generate the following:
Scope (\_TZ)
{
ThermalZone (TM00)
{
Name (_STR, "CPU") // _STR: Description String
Name (_RTV, Zero) // _RTV: Relative Temperature Values
Name (_TZP, 0x64) // _TZP: Thermal Zone Polling
Name (_CRT, 0x0E39) // _CRT: Critical Temperature
Name (_PSV, 0x0DFD) // _PSV: Passive Temperature
Name (_PSL, Package (0x10) // _PSL: Passive List
{
\_SB.CP00,
\_SB.CP01,
\_SB.CP02,
\_SB.CP03,
\_SB.CP04,
\_SB.CP05,
\_SB.CP06,
\_SB.CP07,
\_SB.CP08,
\_SB.CP09,
})
Name (_TC1, 0x02) // _TC1: Thermal Constant 1
Name (_TC2, 0x05) // _TC2: Thermal Constant 2
Name (_TSP, 0x14) // _TSP: Thermal Sampling Period
Method (_TMP, 0, Serialized) // _TMP: Temperature
{
Return (\_SB.PCI0.LPCB.EC0.CREC.TMP (Zero))
}
}
}
BUG=b:186166365
TEST=Boot guybrush to OS and verify thermal zone works
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: Iee2a42db749f18eef6c3f73cdbb3441567301e5d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54132
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
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2021-05-20 08:01:11 +00:00 |
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