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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