diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/4651-drm-doc-Add-amdgpu-hwmon-power-documentation-v2.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/4651-drm-doc-Add-amdgpu-hwmon-power-documentation-v2.patch | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/4651-drm-doc-Add-amdgpu-hwmon-power-documentation-v2.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/4651-drm-doc-Add-amdgpu-hwmon-power-documentation-v2.patch new file mode 100644 index 00000000..a70f54f0 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/4651-drm-doc-Add-amdgpu-hwmon-power-documentation-v2.patch @@ -0,0 +1,136 @@ +From f7d9ae7a179c901b3a3b13936632a864c963f53e Mon Sep 17 00:00:00 2001 +From: Alex Deucher <alexander.deucher@amd.com> +Date: Fri, 1 Jun 2018 12:28:14 -0500 +Subject: [PATCH 4651/5725] drm/doc: Add amdgpu hwmon/power documentation (v2) +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Document the hwmon and power control interfaces exposed +by the amdgpu driver. + +v2: use section rather than chapter for now + +Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 45 ++++++++++++++++++++++++++++------ + 1 file changed, 37 insertions(+), 8 deletions(-) + +diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c +index 6f07b51..2c904a6 100644 +--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c ++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c +@@ -80,12 +80,15 @@ void amdgpu_pm_acpi_event_handler(struct amdgpu_device *adev) + /** + * DOC: power_dpm_state + * +- * This is a legacy interface and is only provided for backwards compatibility. +- * The amdgpu driver provides a sysfs API for adjusting certain power +- * related parameters. The file power_dpm_state is used for this. ++ * The power_dpm_state file is a legacy interface and is only provided for ++ * backwards compatibility. The amdgpu driver provides a sysfs API for adjusting ++ * certain power related parameters. The file power_dpm_state is used for this. + * It accepts the following arguments: ++ * + * - battery ++ * + * - balanced ++ * + * - performance + * + * battery +@@ -169,14 +172,21 @@ static ssize_t amdgpu_set_dpm_state(struct device *dev, + * The amdgpu driver provides a sysfs API for adjusting certain power + * related parameters. The file power_dpm_force_performance_level is + * used for this. It accepts the following arguments: ++ * + * - auto ++ * + * - low ++ * + * - high ++ * + * - manual +- * - GPU fan ++ * + * - profile_standard ++ * + * - profile_min_sclk ++ * + * - profile_min_mclk ++ * + * - profile_peak + * + * auto +@@ -463,8 +473,11 @@ static ssize_t amdgpu_set_pp_table(struct device *dev, + * this. + * + * Reading the file will display: ++ * + * - a list of engine clock levels and voltages labeled OD_SCLK ++ * + * - a list of memory clock levels and voltages labeled OD_MCLK ++ * + * - a list of valid ranges for sclk, mclk, and voltage labeled OD_RANGE + * + * To manually adjust these settings, first select manual using +@@ -1285,35 +1298,51 @@ static ssize_t amdgpu_hwmon_set_power_cap(struct device *dev, + * DOC: hwmon + * + * The amdgpu driver exposes the following sensor interfaces: ++ * + * - GPU temperature (via the on-die sensor) ++ * + * - GPU voltage ++ * + * - Northbridge voltage (APUs only) ++ * + * - GPU power ++ * + * - GPU fan + * + * hwmon interfaces for GPU temperature: ++ * + * - temp1_input: the on die GPU temperature in millidegrees Celsius ++ * + * - temp1_crit: temperature critical max value in millidegrees Celsius ++ * + * - temp1_crit_hyst: temperature hysteresis for critical limit in millidegrees Celsius + * + * hwmon interfaces for GPU voltage: ++ * + * - in0_input: the voltage on the GPU in millivolts ++ * + * - in1_input: the voltage on the Northbridge in millivolts + * + * hwmon interfaces for GPU power: ++ * + * - power1_average: average power used by the GPU in microWatts ++ * + * - power1_cap_min: minimum cap supported in microWatts ++ * + * - power1_cap_max: maximum cap supported in microWatts ++ * + * - power1_cap: selected power cap in microWatts + * + * hwmon interfaces for GPU fan: ++ * + * - pwm1: pulse width modulation fan level (0-255) +- * - pwm1_enable: pulse width modulation fan control method +- * 0: no fan speed control +- * 1: manual fan speed control using pwm interface +- * 2: automatic fan speed control ++ * ++ * - pwm1_enable: pulse width modulation fan control method (0: no fan speed control, 1: manual fan speed control using pwm interface, 2: automatic fan speed control) ++ * + * - pwm1_min: pulse width modulation fan control minimum level (0) ++ * + * - pwm1_max: pulse width modulation fan control maximum level (255) ++ * + * - fan1_input: fan speed in RPM + * + * You can use hwmon tools like sensors to view this information on your system. +-- +2.7.4 + |