Comment 2 for bug 1861633

I have done some searching around and each of the OD_RANGE parameters, as they appear in PP_OD_CLK_VOLTAGE seem to be defined in lines 4495 to 4506 of linux/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c as follows:

linux/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c

As copied from file:
""
 case OD_RANGE:
  if (hwmgr->od_enabled) {
   size = sprintf(buf, "%s:\n", "OD_RANGE");
   size += sprintf(buf + size, "SCLK: %7uMHz %10uMHz\n",
    data->golden_dpm_table.sclk_table.dpm_levels[0].value/100,
    hwmgr->platform_descriptor.overdriveLimit.engineClock/100);
   size += sprintf(buf + size, "MCLK: %7uMHz %10uMHz\n",
    data->golden_dpm_table.mclk_table.dpm_levels[0].value/100,
    hwmgr->platform_descriptor.overdriveLimit.memoryClock/100);
   size += sprintf(buf + size, "VDDC: %7umV %11umV\n",
    data->odn_dpm_table.min_vddc,
    data->odn_dpm_table.max_vddc);
""

Hope this helps