rc.local snip for RX580

if [ $(cat /proc/cmdline | grep amdgpu.ppfeaturemask | wc -l) -eq 1 ];then
    dir='/sys/class/drm/card0/device'
    echo manual > $dir/power_dpm_force_performance_level
    if [ "$(cat $dir/subsystem_vendor)" = "0x1458" ];then
        # Stock-ish
        echo 's 0 300 750' > $dir/pp_od_clk_voltage
        echo 's 1 600 769' > $dir/pp_od_clk_voltage
        echo 's 2 900 906' > $dir/pp_od_clk_voltage
        echo 's 3 1145 968' > $dir/pp_od_clk_voltage
        echo 's 4 1215 1025' > $dir/pp_od_clk_voltage
        echo 's 5 1257 1068' > $dir/pp_od_clk_voltage
        echo 's 6 1300 1106' > $dir/pp_od_clk_voltage
        echo 's 7 1340 1106' > $dir/pp_od_clk_voltage
        # Manual
        #echo 's 7 1340 1100' > $dir/pp_od_clk_voltage
        #echo 's 6 1300 1100' > $dir/pp_od_clk_voltage
        #echo 's 5 1257 1100' > $dir/pp_od_clk_voltage
        #echo 's 4 1215 1100' > $dir/pp_od_clk_voltage
        #echo 's 3 1145 1100' > $dir/pp_od_clk_voltage
        echo c > $dir/pp_od_clk_voltage
        #echo 150000000 > $dir/hwmon/$(ls $dir/hwmon)/power1_cap
    fi
    #echo 2 > $dir/pp_dpm_mclk
    chmod 666 $dir/pp_dpm_mclk
    chmod 666 $dir/pp_dpm_sclk
    chmod 666 $dir/pp_od_clk_voltage
fi