nvidia-tegra-modules.git/Documentation/devicetree/bindings/misc, branch gpu-paging NVIDIA's kernel modules to support tegra chips (used in Jetson boards) therm-fan-est: Add support for Tmargin to drive fan 2020-09-15T15:39:29+00:00 mkarthik mkarthik@nvidia.com 2020-06-17T12:01:11+00:00 f9d1658833bbd2dfd5b24bb8cfff4da88db658ce Why? Tmargin method of fan control allows multiple groups of therma-fan-est devices temperatures to be considered for the fan control algorithm/fan curve. The limitation of the existing max temp algorithm in therm-fan-est driver is that devices with different fan curves cannot be accomodated in the driver. In case, there are multple fan curves, the device which has the steepest curve wins the algoritm. Hence, taking the temperatures as a reference from their respective critical temperatures and using that value to drive the fan will help in accomodating both the devices' fan curves. How? * Calculate the effective crit temp of all the thermal zones during probe. * In the polling cycles, calculate the effective temperatures of the individual groups and use the tmargin formula to calculate the current temperature. * Since the Tmargin temp trip values are in reverse order, we need to use the reverse order in the pwm-fan dt profile. * The hysterysis is subtracted from the temp in cooling scenario to avoid frequent switching at trip temps. Since the tmargin trip values are taken in the decending order, hysterysis temps in dt should be given as negative values. Bug 200627962 Change-Id: Ideba4bfdb3d3306d1b4aff15093bcfac13d7bb86 Signed-off-by: Mantravadi Karthik <mkarthik@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2362354 Reviewed-by: automaticguardword <automaticguardword@nvidia.com> Reviewed-by: Rajkumar Kasirajan <rkasirajan@nvidia.com> Reviewed-by: Bibek Basu <bbasu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: Rajkumar Kasirajan <rkasirajan@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit 
Why?
Tmargin method of fan control allows multiple groups of
therma-fan-est devices temperatures to be considered for
the fan control algorithm/fan curve. The limitation of the
existing max temp algorithm in therm-fan-est driver is that
devices with different fan curves cannot be accomodated in
the driver. In case, there are multple fan curves, the device
which has the steepest curve wins the algoritm. Hence, taking
the temperatures as a reference from their respective critical
temperatures and using that value to drive the fan will help in
accomodating both the devices' fan curves.

How?
* Calculate the effective crit temp of all the thermal zones
  during probe.
* In the polling cycles, calculate the effective temperatures
  of the individual groups and use the tmargin formula to
  calculate the current temperature.
* Since the Tmargin temp trip values are in reverse order, we
  need to use the reverse order in the pwm-fan dt profile.
* The hysterysis is subtracted from the temp in cooling scenario
  to avoid frequent switching at trip temps. Since the tmargin
  trip values are taken in the decending order, hysterysis temps
  in dt should be given as negative values.

Bug 200627962

Change-Id: Ideba4bfdb3d3306d1b4aff15093bcfac13d7bb86
Signed-off-by: Mantravadi Karthik <mkarthik@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2362354
Reviewed-by: automaticguardword <automaticguardword@nvidia.com>
Reviewed-by: Rajkumar Kasirajan <rkasirajan@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: Rajkumar Kasirajan <rkasirajan@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
dt-bindings: misc: add binding doc for nct1008 2018-05-18T23:30:37+00:00 Srikar Srimath Tirumala srikars@nvidia.com 2018-03-23T17:27:00+00:00 3cad1304a9e0fa960c90a65d3a27a5540b9a2b8a Bug 200278110 Change-Id: Ibde2659af4f35a6f4ad5cb4acd13150f87054b37 Signed-off-by: Srikar Srimath Tirumala <srikars@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1681187 Reviewed-by: Sreenivasulu Velpula <svelpula@nvidia.com> Reviewed-by: Hoang Pham <hopham@nvidia.com> 
Bug 200278110

Change-Id: Ibde2659af4f35a6f4ad5cb4acd13150f87054b37
Signed-off-by: Srikar Srimath Tirumala <srikars@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1681187
Reviewed-by: Sreenivasulu Velpula <svelpula@nvidia.com>
Reviewed-by: Hoang Pham <hopham@nvidia.com>
tegra: therm_est: support multiple sets of coefficients 2017-08-15T01:38:52+00:00 Hyungwoo Yang hyungwooy@nvidia.com 2014-11-25T23:08:54+00:00 dd6e683e308d39fc697cd58e854fdcd13100e57c Edit original commit to use 'thermal_zone_of_device_ops'. enable multlple sets of coefficients. Bug 1582735 (cherry-picked from commit If0c31037fdf1d8004c9ee241e0387ceef1bb022f) Signed-off-by: Hyungwoo Yang <hyungwooy@nvidia.com> Reviewed-on: http://git-master/r/655573 Change-Id: If8ec11e80238f70227d473891076a04a8cd1301d Signed-off-by: Srikar Srimath Tirumala <srikars@nvidia.com> 
Edit original commit to use 'thermal_zone_of_device_ops'.

enable multlple sets of coefficients.

Bug 1582735

(cherry-picked from commit If0c31037fdf1d8004c9ee241e0387ceef1bb022f)
Signed-off-by: Hyungwoo Yang <hyungwooy@nvidia.com>
Reviewed-on: http://git-master/r/655573

Change-Id: If8ec11e80238f70227d473891076a04a8cd1301d
Signed-off-by: Srikar Srimath Tirumala <srikars@nvidia.com>
tegra: therm-est: Clean up therm-est driver code 2017-08-15T01:38:52+00:00 Arun Kumar Swain arswain@nvidia.com 2014-08-15T03:33:35+00:00 d245193c9edf6bf364b9656b852f972d1a238887 Edit original commit to use 'thermal_zone_of_device_ops'. Remove unnecessary code from therm-est driver implementation. 1.Unused variables in therm-est after DT implementation are removed. 2.Code segments related to timer trip info are removed since it is not being used anymore. Update device tree documentation for therm_est binding. (cherry-picked from commit I5f421f01b25c72d02e833075f1d1419989d28741) Signed-off-by: Arun Kumar Swain <arswain@nvidia.com> Reviewed-on: http://git-master/r/456999 Change-Id: I06e8ace4466d1d0a91f8bdf2d6c559b7abde6eb1 Signed-off-by: Srikar Srimath Tirumala <srikars@nvidia.com> 
Edit original commit to use 'thermal_zone_of_device_ops'.

Remove unnecessary code from therm-est driver
implementation.
1.Unused variables in therm-est after DT
implementation are removed.
2.Code segments related to timer trip info are
removed since it is not being used anymore.

Update device tree documentation for therm_est
binding.

(cherry-picked from commit I5f421f01b25c72d02e833075f1d1419989d28741)
Signed-off-by: Arun Kumar Swain <arswain@nvidia.com>
Reviewed-on: http://git-master/r/456999

Change-Id: I06e8ace4466d1d0a91f8bdf2d6c559b7abde6eb1
Signed-off-by: Srikar Srimath Tirumala <srikars@nvidia.com>
tegra: therm-est: DT support for therm-est driver 2017-08-15T01:38:52+00:00 Arun Kumar Swain arswain@nvidia.com 2014-08-08T22:51:32+00:00 270b01fc2d93d977cc3befe199a08900d1449ec8 Edit original commit to use 'thermal_zone_of_device_ops'. 1.Read platform data for therm_est driver from device tree. 2.Remove zone registration inside the probe function of this driver since zones will be registered separately using upstream method. 3.Register this sensor to the thermal framework using upstream method. Bug 200014181 (cherry-picked from commit I7f8e3498782ebad6599c7e90a674eb1d1a219b70) Signed-off-by: Arun Kumar Swain <arswain@nvidia.com> Reviewed-on: http://git-master/r/454659 Change-Id: I1c9ee6a1fed84e7173c82ed9ea44aa8677beeb2e Signed-off-by: Srikar Srimath Tirumala <srikars@nvidia.com> 
Edit original commit to use 'thermal_zone_of_device_ops'.

1.Read platform data for therm_est driver from
device tree.
2.Remove zone registration inside the probe
function of this driver since zones will be
registered separately using upstream method.
3.Register this sensor to the thermal framework
using upstream method.

Bug 200014181

(cherry-picked from commit I7f8e3498782ebad6599c7e90a674eb1d1a219b70)
Signed-off-by: Arun Kumar Swain <arswain@nvidia.com>
Reviewed-on: http://git-master/r/454659

Change-Id: I1c9ee6a1fed84e7173c82ed9ea44aa8677beeb2e
Signed-off-by: Srikar Srimath Tirumala <srikars@nvidia.com>
nvs-aonsh: Enable CONFIG_NVS_AON_SHUB config and makefile 2017-07-31T06:11:43+00:00 Robert Collins rcollins@nvidia.com 2017-07-27T21:17:31+00:00 c799fd5dd61ca82a66f3bfd92168d0178f7f6a33 Config: CONFIG_NVS_AON_SHUB Driver: nvs_aon_shub.c Location: drivers/misc/nvs-aonsh, Documentation/devicetree/bindings Bug 200325774 Signed-off-by: Robert Collins <rcollins@nvidia.com> Change-Id: If30397dc9bfdcd2bf2e6c5657597ef3b4d1c2a36 Reviewed-on: https://git-master.nvidia.com/r/1528249 GVS: Gerrit_Virtual_Submit Reviewed-by: Akhilesh Khumbum <akhumbum@nvidia.com> Reviewed-by: Erik Lilliebjerg <elilliebjerg@nvidia.com> 
Config: CONFIG_NVS_AON_SHUB
Driver: nvs_aon_shub.c
Location: drivers/misc/nvs-aonsh, Documentation/devicetree/bindings

Bug 200325774

Signed-off-by: Robert Collins <rcollins@nvidia.com>
Change-Id: If30397dc9bfdcd2bf2e6c5657597ef3b4d1c2a36
Reviewed-on: https://git-master.nvidia.com/r/1528249
GVS: Gerrit_Virtual_Submit
Reviewed-by: Akhilesh Khumbum <akhumbum@nvidia.com>
Reviewed-by: Erik Lilliebjerg <elilliebjerg@nvidia.com>
devicetree: Move device tree bindings to correct destination folder 2017-07-27T00:48:50+00:00 Robert Collins rcollins@nvidia.com 2017-07-18T17:14:49+00:00 7ba27b664d4e25d8ee9f0a8674fdd29e14df0254 Config: Device tree bindings Driver: ALL Location: Documentation/devicetree/bindings Bug 200325774 Change-Id: I8f991e042466bf133b40d6d9bab9ed0d77e52c86 Signed-off-by: Robert Collins <rcollins@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1522449 GVS: Gerrit_Virtual_Submit Reviewed-by: Erik Lilliebjerg <elilliebjerg@nvidia.com> Reviewed-by: Akhilesh Khumbum <akhumbum@nvidia.com> 
Config: Device tree bindings
Driver: ALL
Location: Documentation/devicetree/bindings

Bug 200325774

Change-Id: I8f991e042466bf133b40d6d9bab9ed0d77e52c86
Signed-off-by: Robert Collins <rcollins@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1522449
GVS: Gerrit_Virtual_Submit
Reviewed-by: Erik Lilliebjerg <elilliebjerg@nvidia.com>
Reviewed-by: Akhilesh Khumbum <akhumbum@nvidia.com>