Josh, Specifically, we're trying to get console on of_serial, but there doesn't seem to be any code to register a console, except in legacy_serial? But legacy_serial doesn't implement the offsets necessary for the Xilinx uart16550 cores. Does it seem reasonable to add code to of_serial.c to register consoles, or is there something else we're missing here?
Steve > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:linuxppc-dev- > [EMAIL PROTECTED] On Behalf Of Josh Boyer > Sent: Tuesday, March 11, 2008 3:03 PM > To: John Linn > Cc: linuxppc-dev@ozlabs.org > Subject: Re: of_serial vs legacy serial support with powerpc arch on 405 > > On Tue, 11 Mar 2008 09:04:27 -0600 > "John Linn" <[EMAIL PROTECTED]> wrote: > > > I've searched and found some threads, but it's still not clear to me. > > I'm working on 405 with powerpc and trying to get UART550 working. > > Walnut works. So do Halakeau and Kilauea. Is your serial port > significantly different from those? > > > I know that I need speed, freq, and reg-shift properties in the device > > tree and I have found patches for of_serial.c. > > Patches for of_serial.c for what? > > > I still don't understand when to use of_serial.c (SERIAL_OF_PLATFORM) vs > > the legacy support for serial ports. Is there any docs that I'm not > > finding that I should read? > > There are no docs. At one time, of_serial was declared as the one true > serial driver, but these days either will do. The benefit of > legacy_serial is that output is enabled earlier in the boot. > > > I don't see a way to configure in the legacy support, but I'm using > > SERIAL_OF and having problems. I don't see the console getting enabled > > even though it found the serial port driver. > > You need to have CONFIG_PPC_UDBG_16550 set to bring in legacy_serial. > > josh > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@ozlabs.org > https://ozlabs.org/mailman/listinfo/linuxppc-dev _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev