Xiaojian Du ca55f459f5 drm/amd/pm: add the fine grain tuning function for renoir ... This patch is to add the fine grain tuning function for renoir. This function uses the pp_od_clk_voltage sysfs file to configure the min and max value of gfx clock frequency manually or restore the default value. Command guide: echo "s level value" > pp_od_clk_voltage "s" - set the sclk frequency "level" - 0 or 1, "0" represents the min value, "1" represents the max value "value" - the target value of sclk frequency, it should be limited in the safe range echo "r" > pp_od_clk_voltage "r" - reset the sclk frequency, restore the default value instantly echo "c" > pp_od_clk_voltage "c" - commit the min and max value of sclk frequency to the system only after the commit command, the target values set by "s" command will take effect. Example: 1)change power profile from "auto" to "standard" $ cat power_dpm_force_performance_level auto $ echo "profile_standard" > power_dpm_force_performance_level $ cat power_dpm_force_performance_level profile_standard 2)check the default sclk frequency $ cat pp_od_clk_voltage OD_SCLK: 0: 200Mhz 1: 1400Mhz OD_RANGE: SCLK: 200MHz 1400MHz 3)use "s" -- set command to configure the min and max sclk frequency $ echo "s 0 600" > pp_od_clk_voltage $ echo "s 1 1000" > pp_od_clk_voltage $ echo "c" > pp_od_clk_voltage $ cat pp_od_clk_voltage OD_SCLK: 0: 600Mhz 1: 1000Mhz OD_RANGE: SCLK: 200MHz 1400MHz 4)use "r" -- reset command to restore the min or max sclk frequency $ echo "r" > pp_od_clk_voltage $ cat pp_od_clk_voltage OD_SCLK: 0: 200Mhz 1: 1400Mhz OD_RANGE: SCLK: 200MHz 1400MHz Signed-off-by: Xiaojian Du <Xiaojian.Du@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>		2021-01-05 11:30:30 -05:00
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acp
amdgpu	drm/amdgpu: drop psp ih programming for sriov guest on navi	2020-12-23 15:07:50 -05:00
amdkfd	drm/amdkfd: check both client id and src id in interrupt handlers	2020-12-23 15:07:40 -05:00
display	drm/amd/display: Use common error handling code in dc_create()	2020-12-23 15:07:47 -05:00
include	drm/amd/pm: support overdrive vddgfx offset setting(V2)	2020-12-23 15:07:03 -05:00
pm	drm/amd/pm: add the fine grain tuning function for renoir	2021-01-05 11:30:30 -05:00