diff options
| author | Thara Gopinath <thara.gopinath@linaro.org> | 2021-08-09 21:16:00 +0200 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2021-08-18 09:32:25 +0200 |
| commit | 53bca371cdf7addc1e93e1b99285b3d3935685ec (patch) | |
| tree | 0092f732d97acf201e01db7fdd399bfd1d788dc1 /drivers/thermal/qcom/Kconfig | |
| parent | firmware: qcom_scm: Introduce SCM calls to access LMh (diff) | |
| download | linux-53bca371cdf7addc1e93e1b99285b3d3935685ec.tar.xz linux-53bca371cdf7addc1e93e1b99285b3d3935685ec.zip | |
thermal/drivers/qcom: Add support for LMh driver
Driver enabling various pieces of Limits Management Hardware(LMh) for cpu
cluster0 and cpu cluster1 namely kick starting monitoring of temperature,
current, battery current violations, enabling reliability algorithm and
setting up various temperature limits.
The following has been explained in the cover letter. I am including this
here so that this remains in the commit message as well.
LMh is a hardware infrastructure on some Qualcomm SoCs that can enforce
temperature and current limits as programmed by software for certain IPs
like CPU. On many newer LMh is configured by firmware/TZ and no programming
is needed from the kernel side. But on certain SoCs like sdm845 the
firmware does not do a complete programming of the h/w. On such soc's
kernel software has to explicitly set up the temperature limits and turn on
various monitoring and enforcing algorithms on the hardware.
Tested-by: Steev Klimaszewski <steev@kali.org> # Lenovo Yoga C630
Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210809191605.3742979-3-thara.gopinath@linaro.org
Diffstat (limited to 'drivers/thermal/qcom/Kconfig')
| -rw-r--r-- | drivers/thermal/qcom/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/thermal/qcom/Kconfig b/drivers/thermal/qcom/Kconfig index 8d5ac2df26dc..7d942f71e532 100644 --- a/drivers/thermal/qcom/Kconfig +++ b/drivers/thermal/qcom/Kconfig @@ -31,3 +31,13 @@ config QCOM_SPMI_TEMP_ALARM trip points. The temperature reported by the thermal sensor reflects the real time die temperature if an ADC is present or an estimate of the temperature based upon the over temperature stage value. + +config QCOM_LMH + tristate "Qualcomm Limits Management Hardware" + depends on ARCH_QCOM + help + This enables initialization of Qualcomm limits management + hardware(LMh). LMh allows for hardware-enforced mitigation for cpus based on + input from temperature and current sensors. On many newer Qualcomm SoCs + LMh is configured in the firmware and this feature need not be enabled. + However, on certain SoCs like sdm845 LMh has to be configured from kernel. |