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| author | Wei Ni <wni@nvidia.com> | 2019-02-21 18:18:39 +0800 |
|---|---|---|
| committer | Eduardo Valentin <edubezval@gmail.com> | 2019-05-13 20:35:33 -0700 |
| commit | 7d8ac6b282ad4a2914f480ab80bf81dd5b77038c (patch) | |
| tree | afffbb2a5902b46ab630e72f82efc151bb300a0f | |
| parent | 2510aa56ab8795e541386c4f662d40c6c4e98ba9 (diff) | |
| download | linux-7d8ac6b282ad4a2914f480ab80bf81dd5b77038c.tar.gz | |
of: Add bindings of gpu hw throttle for Tegra soctherm
Add "nvidia,gpu-throt-level" property to set gpu hw throttle level. Signed-off-by: Wei Ni <wni@nvidia.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
| -rw-r--r-- | Documentation/devicetree/bindings/thermal/nvidia,tegra124-soctherm.txt | 17 | ||||
| -rw-r--r-- | include/dt-bindings/thermal/tegra124-soctherm.h | 8 |
2 files changed, 19 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. + 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. @@ -96,22 +105,26 @@ Example : throttle-cfgs { /* * When the "heavy" cooling device triggered, - * the HW will skip cpu clock's pulse in 85% depth + * the HW will skip cpu clock's pulse in 85% depth, + * skip gpu clock's pulse in 85% level */ throttle_heavy: heavy { nvidia,priority = <100>; nvidia,cpu-throt-percent = <85>; + nvidia,gpu-throt-level = <TEGRA_SOCTHERM_THROT_LEVEL_HIGH>; #cooling-cells = <1>; }; /* * When the "light" cooling device triggered, - * the HW will skip cpu clock's pulse in 50% depth + * the HW will skip cpu clock's pulse in 50% depth, + * skip gpu clock's pulse in 50% level */ throttle_light: light { nvidia,priority = <80>; nvidia,cpu-throt-percent = <50>; + nvidia,gpu-throt-level = <TEGRA_SOCTHERM_THROT_LEVEL_LOW>; #cooling-cells = <1>; }; diff --git a/include/dt-bindings/thermal/tegra124-soctherm.h b/include/dt-bindings/thermal/tegra124-soctherm.h index c15e8b709a0d..444c7bdde146 100644 --- a/include/dt-bindings/thermal/tegra124-soctherm.h +++ b/include/dt-bindings/thermal/tegra124-soctherm.h @@ -12,9 +12,9 @@ #define TEGRA124_SOCTHERM_SENSOR_PLLX 3 #define TEGRA124_SOCTHERM_SENSOR_NUM 4 -#define TEGRA_SOCTHERM_THROT_LEVEL_LOW 0 -#define TEGRA_SOCTHERM_THROT_LEVEL_MED 1 -#define TEGRA_SOCTHERM_THROT_LEVEL_HIGH 2 -#define TEGRA_SOCTHERM_THROT_LEVEL_NONE -1 +#define TEGRA_SOCTHERM_THROT_LEVEL_NONE 0 +#define TEGRA_SOCTHERM_THROT_LEVEL_LOW 1 +#define TEGRA_SOCTHERM_THROT_LEVEL_MED 2 +#define TEGRA_SOCTHERM_THROT_LEVEL_HIGH 3 #endif |