Linuxppc-dev Digest, Vol 81, Issue 140

[Muhammad Waseem]

I have developed a simple polling based serial device driver for PC's serial
port (COM1: 0x3F8) which works fine. Now I want to implement the same on
UART # 1 of PPC440EPx (Sequoia board).

By changing the base address 0x3F8 to UART# 1 base address (0xEF600400) in
Sequoia it does not work and return all the registers contents
from 0xEF600400 to 0xEF600407 as 0xFF.

Whereas existing ttyS1 driver works for UART# 1.

How can I access the UART# 1 registers in a custom serial driver under
kernel space.

Waseem
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