apu_thermal_cap(9)

💖 apu_thermal_cap 💖

okay bestie, this is the apu_thermal_cap(9) page from the Kernel API Manual, and it is highkey all about the amdgpu driver's sysfs API for retrieving/updating the thermal limit temperature in millidegrees Celsius. no cap. ✨🫶

Reading back the file shows you the core limit value 👑.

Writing an integer to the file sets a new thermal limit. The value should be between 0 and 100. If the value is less than 0 or greater than 100, then the write request will be ignored.

bestie, that's the whole range check: less than 0 or greater than 100, and the write request is ignored. periodt. 💅

🌈 SEE ALSO 🌈

• Kernel file: ./drivers/gpu/drm/amd/pm/amdgpu_pm.c
• amdgpu_pm_dev_state_check(9)
• amdgpu_pm_get_access(9)
• amdgpu_pm_get_access_if_active(9)
• amdgpu_pm_put_access(9)
• power_dpm_state(9)
• power_dpm_force_performance_level(9)
• pp_table(9)
• pp_od_clk_voltage(9)
• pp_features(9)
• pp_dpm_sclk
• pp_dpm_mclk
• pp_dpm_socclk
• pp_dpm_fclk
• pp_dpm_dcefclk
• pp_dpm_pcie(9)
• pp_power_profile_mode(9)
• gpu_busy_percent(9)
• mem_busy_percent(9)
• vcn_busy_percent(9)
• pcie_bw(9)
• unique_id(9)
• thermal_throttling_logging(9)
• gpu_metrics(9)
• smartshift_apu_power(9)
• smartshift_dgpu_power(9)
• smartshift_bias(9)
• board(9)
• baseboard_temp(9)
• gpuboard_temp(9)
• cur_node_power_limit(9)
• node_power(9)
• npm_status(9)
• global_ppt_resid(9)
• max_node_power_limit(9)
• baseboard_power(9)
• baseboard_power_limit(9)
• pm_policy(9)
• hwmon(9)
• fan_curve(9)
• acoustic_limit_rpm_threshold(9)
• acoustic_target_rpm_threshold(9)
• fan_target_temperature(9)
• fan_minimum_pwm(9)
• fan_zero_rpm_enable(9)
• fan_zero_rpm_stop_temperature(9)

mwah 💋 — this page's source/version is ./drivers/gpu/drm/amd/pm, the date on it is October 2026, and it's literally apu_thermal_cap(9). slay. 🎀✨