On 19/2/2019 4:33 AM, Rob Herring wrote: > On Tue, Dec 18, 2018 at 03:34:36PM +0800, Wei Ni wrote: >> Add "nvidia,gpu-throt-level" property to set gpu hw >> throttle level. >> >> Signed-off-by: Wei Ni <wni@xxxxxxxxxx> >> --- >> .../bindings/thermal/nvidia,tegra124-soctherm.txt | 17 +++++++++++++++-- >> include/dt-bindings/thermal/tegra124-soctherm.h | 22 ++++++++++++++++++---- >> 2 files changed, 33 insertions(+), 6 deletions(-) >> >> diff --git a/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt b/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt >> index ab66d6feab4b..cf6d0be56b7a 100644 >> --- a/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt >> +++ b/Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt >> @@ -52,6 +52,15 @@ Required properties : >> Must set as following values: >> TEGRA_SOCTHERM_THROT_LEVEL_LOW, TEGRA_SOCTHERM_THROT_LEVEL_MED >> TEGRA_SOCTHERM_THROT_LEVEL_HIGH, TEGRA_SOCTHERM_THROT_LEVEL_NONE >> + - nvidia,gpu-throt-level: This property is for Tegra124 and Tegra210. > > Also, why not just use percents like nvidia,cpu-throt-percent? Hi Rob, We have to use "-level" for gpu throttle, can't use percents. It's designed by hardware. BTW, for the cpu-throt, it use "-level" for t132, and use "-percent" for t124 and t210. Thanks. Wei. > >> + It is the level of pulse skippers, which used to throttle clock >> + frequencies. It indicates gpu clock throttling depth and can be >> + programmed to any of the following values which represent a throttling >> + percentage: >> + TEGRA_SOCTHERM_THROT_LEVEL_NONE (0%) >> + TEGRA_SOCTHERM_THROT_LEVEL_LOW (50%), >> + TEGRA_SOCTHERM_THROT_LEVEL_MED (75%), >> + TEGRA_SOCTHERM_THROT_LEVEL_HIGH (85%). >> - #cooling-cells: Should be 1. This cooling device only support on/off state. >> See ./thermal.txt for a description of this property.
