2008-09-17 10:00:48 uart with dma on EzKit BF548
Klaus Hachmeister (GERMANY)
i would like to use UART 2 and 3 with max. possible speed without handshake.
What baudrate is realistic ?
In ..\linux-2.6.x\arch\blackfin\mach-bf548\dma.c i found a dma-definition for UART 0 and 1 (Rx and Tx).
As far as i know UART 0 cant be used, why do we need dma ?
How can i enable dma for UART 2 and 3 ?
The file ..\linux-2.6.x\arch\blackfin\mach-bf548\boards\cm_bf548.c is not in use, right ?
I think there is a missing line:
.start = 0xFFC02100,
.end = 0xFFC021FF,
.flags = IORESOURCE_MEM,
.start = 0xFFC03100,
.end = 0xFFC031FF,
.flags = IORESOURCE_MEM, <- this line should be inserted
I would like to use uClinux-dist-2008R1.5-RC3.
2008-09-17 13:08:56 Re: uart with dma on EzKit BF548
Mike Frysinger (UNITED STATES)
UART DMA settings are controlled in the kernel configuration menu
2008-09-18 02:36:49 Re: uart with dma on EzKit BF548
Sonic Zhang (CHINA)
UART0 can't be used on your board, but that doesn't mean on all board.