* [U-Boot] question: multiple serial @ 2011-02-24 20:53 Ran Shalit 2011-02-25 6:38 ` Albert ARIBAUD 2011-02-25 7:40 ` Stefano Babic 0 siblings, 2 replies; 7+ messages in thread From: Ran Shalit @ 2011-02-24 20:53 UTC (permalink / raw) To: u-boot Hello, I try to understand what is the right way in U-Boot to configure multiple serials. I use in my board more 3 UART's , one of them is the console. Should I define config_serial_multi ? when I did try to do so, I got "#error No default console" though UART2 is defined as console. Could it be that da850evm does not support configuration of multiple serials ? Thank you very much, Ran ^ permalink raw reply [flat|nested] 7+ messages in thread
* [U-Boot] question: multiple serial 2011-02-24 20:53 [U-Boot] question: multiple serial Ran Shalit @ 2011-02-25 6:38 ` Albert ARIBAUD 2011-02-25 7:40 ` Stefano Babic 1 sibling, 0 replies; 7+ messages in thread From: Albert ARIBAUD @ 2011-02-25 6:38 UTC (permalink / raw) To: u-boot Hi Ran, Le 24/02/2011 21:53, Ran Shalit a ?crit : > Hello, > > I try to understand what is the right way in U-Boot to configure multiple > serials. I use in my board more 3 UART's , one of them is the console. > Should I define config_serial_multi ? when I did try to do so, I got > "#error No default console" though UART2 is defined as console. Could it be > that da850evm does not support configuration of multiple serials ? The simplest way I see is to inspect the code and trace back from the error message to see what exactly triggers this error and why. One possible way would be to take the command line that results in this error and remplace compiler options to just output preprocessed source code instead of object code; you'll be able to see if the .h that contains the default console is included, and what parts of it are compiled exactly. > Thank you very much, > > Ran Amicalement, -- Albert. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [U-Boot] question: multiple serial 2011-02-24 20:53 [U-Boot] question: multiple serial Ran Shalit 2011-02-25 6:38 ` Albert ARIBAUD @ 2011-02-25 7:40 ` Stefano Babic 2011-02-27 18:27 ` ran shalit 1 sibling, 1 reply; 7+ messages in thread From: Stefano Babic @ 2011-02-25 7:40 UTC (permalink / raw) To: u-boot On 02/24/2011 09:53 PM, Ran Shalit wrote: > Hello, > > I try to understand what is the right way in U-Boot to configure multiple > serials. That is correct. > I use in my board more 3 UART's , one of them is the console. > Should I define config_serial_multi ? Yes > when I did try to do so, I got > "#error No default console" though UART2 is defined as console. Could it be > that da850evm does not support configuration of multiple serials ? The da850evm uses the NS16550 driver, and multiple uarts are supported. It seems to me you have not set CONFIG_CONS_INDEX in your config file. Best regards, Stefano Babic -- ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office at denx.de ===================================================================== ^ permalink raw reply [flat|nested] 7+ messages in thread
* [U-Boot] question: multiple serial 2011-02-25 7:40 ` Stefano Babic @ 2011-02-27 18:27 ` ran shalit 2011-02-27 21:34 ` Stefano Babic 2011-02-27 21:40 ` Graeme Russ 0 siblings, 2 replies; 7+ messages in thread From: ran shalit @ 2011-02-27 18:27 UTC (permalink / raw) To: u-boot Stefano Babic wrote: > > On 02/24/2011 09:53 PM, Ran Shalit wrote: >> Hello, >> >> I try to understand what is the right way in U-Boot to configure multiple >> serials. > > That is correct. > >> I use in my board more 3 UART's , one of them is the console. >> Should I define config_serial_multi ? > > Yes > >> when I did try to do so, I got >> "#error No default console" though UART2 is defined as console. Could it >> be >> that da850evm does not support configuration of multiple serials ? > > The da850evm uses the NS16550 driver, and multiple uarts are supported. > It seems to me you have not set CONFIG_CONS_INDEX in your config file. > > Best regards, > Stefano Babic > > -- > ===================================================================== > DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel > HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany > Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office at denx.de > ===================================================================== > _______________________________________________ > U-Boot mailing list > U-Boot at lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot > > Hello Stafno, Thank you for the reply. The strange thing is that although the OMAP L138 have the ability for using more then one UART, it seems that in the u-boot, it is not well supported: Only if I add in /common/serial.c the following line: line 45: || defined (CONFIG_MACH_DAVINCI_DA850EVM), and same include in /common/serial.h then compiler error is solved. it is as if this file support several cpu's but the OMAP is not one of them. Is It correct to add this flags in order to support multiple serials in OMAP L138 EVM ? I tried to ask in TI forum, but got no reply yet. Thank you very much, Ran -- View this message in context: http://old.nabble.com/-U-Boot--question%3A-multiple-serial-tp31007796p31026374.html Sent from the Uboot - Users mailing list archive at Nabble.com. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [U-Boot] question: multiple serial 2011-02-27 18:27 ` ran shalit @ 2011-02-27 21:34 ` Stefano Babic 2011-02-28 6:11 ` ran shalit 2011-02-27 21:40 ` Graeme Russ 1 sibling, 1 reply; 7+ messages in thread From: Stefano Babic @ 2011-02-27 21:34 UTC (permalink / raw) To: u-boot On 02/27/2011 07:27 PM, ran shalit wrote: > Hello Stafno, > > Thank you for the reply. > The strange thing is that although the OMAP L138 have the ability for using > more then one UART, it seems that in the u-boot, it is not well supported: > Only if I add in /common/serial.c the following line: > line 45: || defined (CONFIG_MACH_DAVINCI_DA850EVM), and same include in > /common/serial.h > then compiler error is solved. it is as if this file support several cpu's > but the OMAP is not one of them. Is It correct to add this flags in order to > support multiple serials in OMAP L138 EVM ? I tried to ask in TI forum, but > got no reply yet. I see. Definitely, there is a check on processor tape before checking the serial driver. As flag you should add CONFIG_SOC_DA8XX instead of CONFIG_MACH_DAVINCI_DA850EVM, as the last one depends on board, and the availability of the NS16550 depends on processor. Best regards, Stefano Babic -- ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office at denx.de ===================================================================== ^ permalink raw reply [flat|nested] 7+ messages in thread
* [U-Boot] question: multiple serial 2011-02-27 21:34 ` Stefano Babic @ 2011-02-28 6:11 ` ran shalit 0 siblings, 0 replies; 7+ messages in thread From: ran shalit @ 2011-02-28 6:11 UTC (permalink / raw) To: u-boot Hi, In the same subject of multiple serials, there is something else which I am not sure about: All the serial use the same driver (NS16550), but in the board h. file (da850evm.h) there is the following definition: #define CONFIG_SYS_NS16550_CLK clk_get(DAVINCI_UART2_CLKID) UART2 is the console, but does it mean that the ns16550 CLK, which is used for the other uart's too should be defined as clk_get(DAVINCI_UART2_CLKID) ? -- View this message in context: http://old.nabble.com/-U-Boot--question%3A-multiple-serial-tp31007796p31029235.html Sent from the Uboot - Users mailing list archive at Nabble.com. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [U-Boot] question: multiple serial 2011-02-27 18:27 ` ran shalit 2011-02-27 21:34 ` Stefano Babic @ 2011-02-27 21:40 ` Graeme Russ 1 sibling, 0 replies; 7+ messages in thread From: Graeme Russ @ 2011-02-27 21:40 UTC (permalink / raw) To: u-boot On Mon, Feb 28, 2011 at 5:27 AM, ran shalit <ranshalit@gmail.com> wrote: > > > > Stefano Babic wrote: >> >> On 02/24/2011 09:53 PM, Ran Shalit wrote: >>> Hello, >>> >>> I try to understand what is the right way in U-Boot to configure multiple >>> serials. >> >> That is correct. >> >>> I use in my board more 3 UART's , one of them is the console. >>> Should I define config_serial_multi ? >> >> Yes >> >>> when I did try to do so, I got >>> "#error No default console" though UART2 is defined as console. Could it >>> be >>> that da850evm does not support configuration of multiple serials ? >> >> The da850evm uses the NS16550 driver, and multiple uarts are supported. >> It seems to me you have not set CONFIG_CONS_INDEX in your config file. >> >> Best regards, >> Stefano Babic >> >> -- >> ===================================================================== >> DENX Software Engineering GmbH, ? ? MD: Wolfgang Denk & Detlev Zundel >> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany >> Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 ?Email: office at denx.de >> ===================================================================== >> _______________________________________________ >> U-Boot mailing list >> U-Boot at lists.denx.de >> http://lists.denx.de/mailman/listinfo/u-boot >> >> > > Hello Stafno, > > Thank you for the reply. > The strange thing is that although the OMAP L138 have the ability for using > more then one UART, it seems that in the u-boot, it is not well supported: > Only if I add in /common/serial.c the following line: > line 45: || defined (CONFIG_MACH_DAVINCI_DA850EVM), and same include in > /common/serial.h > then compiler error is solved. it is as if this file support several cpu's > but the OMAP is not one of them. Is It correct to add this flags in order to > support multiple serials in OMAP L138 EVM ? I tried to ask in TI forum, but > got no reply yet. > That particular file, as well as /drivers/serial/serial.c (which look very ns16550 UART specific) have always annoyed me :) I had the same trouble getting serial to work properly, trying to figure out how the whole serial architecture fits together Regards, Graeme ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2011-02-28 6:11 UTC | newest] Thread overview: 7+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2011-02-24 20:53 [U-Boot] question: multiple serial Ran Shalit 2011-02-25 6:38 ` Albert ARIBAUD 2011-02-25 7:40 ` Stefano Babic 2011-02-27 18:27 ` ran shalit 2011-02-27 21:34 ` Stefano Babic 2011-02-28 6:11 ` ran shalit 2011-02-27 21:40 ` Graeme Russ
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.