Listener port change in 11g

Dear All,

Database version 11.2.0.3, I want to change the listener port of database to 1541 and register the same in grid home.

from Grid   home:

hostname01[/pd01/grid/app/11.2.0/grid_home]#lsnrctl stat

LSNRCTL for IBM/AIX RISC System/6000: Version 11.2.0.3.0 - Production on 05-OCT-2012 23:43:38

Copyright (c) 1991, 2011, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))

STATUS of the LISTENER

------------------------

Alias                     LISTENER

Version                   TNSLSNR for IBM/AIX RISC System/6000: Version 11.2.0.3.0 - Production

Start Date                05-OCT-2012 23:43:20

Uptime                    0 days 0 hr. 0 min. 17 sec

Trace Level               off

Security                  ON: Local OS Authentication

SNMP                      ON

Listener Parameter File   /pd01/grid/app/11.2.0/grid_home/network/admin/listener.ora