Hi Lokesh, > Does anybody know of a driver for an external 16550 memory mapped uart > driver for an mpc855 based board? Any help is appreciated?
Have a look at linuxppc_2_4_devel at DENX CVS between LABEL_2003_03_11_2055 and LABEL_2003_03_11_2110. This extension (for our board called DAB4K) makes it possible to use the standard linux serial driver with an external, memory mapped 16C752B dual uart. This one is recocnized by linux as two ST16654: ... Serial driver version 5.05c (2001-07-08) with no serial options enabled ttyS00 at 0xc3071000 (irq = 6) is a ST16654 ttyS01 at 0xc3071080 (irq = 8) is a ST16654 ... We then use ~ # ls -l /dev/ttyS*e crw-r--r-- 1 root root 204, 64 Mar 12 2003 /dev/ttyS0e crw-rw---- 1 root root 204, 65 Sep 29 13:19 /dev/ttyS1e to access them. Works fine. Thanks to DENX. Hope this helps! -- Steven Scholz imc Measurement & Control imc Me?systeme GmbH Voltastr. 5 Voltastr. 5 13355 Berlin 13355 Berlin Germany Deutschland fon: +49 30 467090-0 Tel: 030 / 467090-0 fax: +49 30 4631576 fax: 030 / 4631576 ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
