return false;
        else if (stream->psr_version == 0x1)
                cmd.psr_set_version.psr_set_version_data.version = PSR_VERSION_1;
-       else if (stream->psr_version == 0x2)
-               cmd.psr_set_version.psr_set_version_data.version = PSR_VERSION_2;
-
        cmd.psr_enable.header.payload_bytes = sizeof(struct dmub_cmd_psr_set_version_data);
 
        dc_dmub_srv_cmd_queue(dc->dmub_srv, &cmd.psr_enable.header);
 
  */
 
 enum dmub_cmd_psr_type {
-       DMUB_CMD__PSR_SET_VERSION       = 0,
-       DMUB_CMD__PSR_COPY_SETTINGS     = 1,
-       DMUB_CMD__PSR_ENABLE            = 2,
-       DMUB_CMD__PSR_DISABLE           = 3,
-       DMUB_CMD__PSR_SET_LEVEL         = 4,
+       DMUB_CMD__PSR_SET_VERSION               = 0,
+       DMUB_CMD__PSR_COPY_SETTINGS             = 1,
+       DMUB_CMD__PSR_ENABLE                    = 2,
+       DMUB_CMD__PSR_DISABLE                   = 3,
+       DMUB_CMD__PSR_SET_LEVEL                 = 4,
 };
 
 enum psr_version {
-       PSR_VERSION_1                   = 0x10, // PSR Version 1
-       PSR_VERSION_2                   = 0x20, // PSR Version 2, includes selective update
-       PSR_VERSION_2_1                 = 0x21, // PSR Version 2, includes Y-coordinate support for SU
+       PSR_VERSION_1                           = 0,
 };
 
 enum dmub_cmd_abm_type {