tree 6f10748d6984aa7a88577307a2ef8f6ebb6353a1
parent a9efed5fd90534b20b6739fa24e5a6339f67b827
author Raul E Rangel <rrangel@chromium.org> 1620860620 -0600
committer Patrick Georgi <pgeorgi@google.com> 1621497671 +0000

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>