I am using kernel version 2.6.23 which came with the Sequoia support CD. So that means UART # 1 BSP would probably not there? But device file /dev/ttyS1 is present in rootfs when listed using 'ls'. Do you think updating the kernel might solve the problem?
BTW where can I see the board's DTS file? -- Waseem On Mon, May 23, 2011 at 5:40 PM, Josh Boyer <jwbo...@linux.vnet.ibm.com>wrote: > On Mon, May 23, 2011 at 11:34:26AM +0500, Muhammad Waseem wrote: > >Hello, > > I am working on PPC440EPx (Sequoia) to access its UART # 1 port for > data > >transfer, while UART # 0 is connected to remote terminal access on host. > >However there is no module/driver listed for UART # 1 using 'lsmod'. The > >kernel version is 2.6.23. How can I access the UART # 1 in user space > and/or > >kernel space? Do I need to develop own BSP for this? please help. > > The driver is normally built into the kernel. If the board DTS file has > both UARTs listed, and you have /dev/ttyS1 on your rootfs you should be > able to use it. However, Sequoia wasn't added until 2.6.24, so I'm not > really sure what kernel flavor you are using. > > josh >
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