On Thu, Oct 14, 2010 at 5:18 PM, Victor Rodriguez <vm.ro...@gmail.com>wrote:
> On Thu, Oct 14, 2010 at 4:10 PM, Nicolas Luna <luna...@gmail.com> wrote: > > Victor, > > What should I check? You mean the file system /dev/ttyS.. is not correct? > > Regards, > > Nicolas > > > Do not top post :) > > > > > On Thu, Oct 14, 2010 at 4:53 PM, Victor Rodriguez <vm.ro...@gmail.com> > > wrote: > >> > >> On Thu, Oct 14, 2010 at 3:41 PM, Nicolas Luna <luna...@gmail.com> > wrote: > >> > Hi, > >> > I'm trying to communication with UART1 on OMAP-L138. At the moment, I > >> > can > >> > write message to the serial port but I cannot read some. I got > the error > >> > 11: > >> > Resource temporarily unavailable. > >> > To activate the UART1, I commented one line (see below) in > >> > board-da850-evm.c. I wonder what is "too much work in irq53", is it > has > >> > anything to do with my problem? Is it a know bug to not be able to > read > >> > from > >> > UART1 under Davinci? > >> > /* > >> > * shut down uart 0 and 1; they are not used on the board and > >> > * accessing them causes endless "too much work in irq53" messages > >> > * with arago fs > >> > */ > >> > //__raw_writel(0, IO_ADDRESS(DA8XX_UART1_BASE) + 0x30); > >> > __raw_writel(0, IO_ADDRESS(DA8XX_UART0_BASE) + 0x30); > >> > >> > >> Check with latest file system from angstrom I had the same problem > >> with the initial support fro Hawkboard omapl 138 > > Check this commit > > > https://mail.sasken.com/OWA/redir.aspx?C=ded1d3bc21834b138e93aa6e04f85155&URL=http%3a%2f%2fgit.kernel.org%2f%3fp%3dlinux%2fkernel%2fgit%2fkhilman%2flinux-davinci.git%3ba%3dcommitdiff%3bh%3d6c18c91b3a6db6169998b54df12c9d53e74999f3 > > This patch adds initial support for the Hawkboard-L138 system > It is under the machine name "omapl138_hawkboard". > This system is based on the da850 davinci CPU architecture. > Information on these system may be found at http://www.hawkboard.org. > Basic support for the UART console is included in this patch. > It's tested with latest Angstrom File Systems like ramdisk > from http://alturl.com/imb45. > > > Some old file systems used to open all the Serial Ports but in OMAP > l138 the uart 1 is multiplexed and generate the spurious interrupt Try > with latest Argo File Systems > > > Regards > > Victor Rodriguez > > > >> Regards > >> > >> Victor Rodriguez > >> > >> > Thanks for support. > >> > Regards, > >> > Nicolas > >> > > >> > > >> > > >> > _______________________________________________ > >> > Davinci-linux-open-source mailing list > >> > Davinci-linux-open-source@linux.davincidsp.com > >> > > http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source > >> > > >> > > > > > > Victor, Sorry for top post, gmail automaticlly top post. I tried the file system with my current kernel image and I got the same error. Then I tried the linux image provided into the tar generated by the siteweb but I am not able to boot it because I need an other JTAG ID that the default one because of my silicon revision. I checked to the patch and I got the same configuration. Do you have any idea what I should change into my kernel source code to solve the uart issue? Thank you Nicolas
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