Re: enabling uart2 on omap5912 osk
If you do not have a "c" as the first character in the permissions, then
your device file is not a true device file, but just a file. You should
delete that file (ttyS1) and create the device file:
mknod /dev/ttyS1 c 4 65
mknod /dev/ttyS2 c 4 66
Steve
mohammed shareef wrote:
hi,
i have changed the line in omap_osk.c to:
static struct omap_uart_config osk_uart_config __initdata = {
.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
};
And all the three UARTs are enabled now as i can see in the kernel boot-log:
serial8250.0: ttyS0 at MMIO 0xfffb (irq = 46) is a ST16654
serial8250.0: ttyS1 at MMIO 0xfffb0800 (irq = 47) is a ST16654
serial8250.0: ttyS2 at MMIO 0xfffb9800 (irq = 15) is a ST16654
A node called ttyS0 is already there which is linked to uart0.
when i type:
ls -l /dev/ttyS0
crw-rw-rw-1 root root 4, 64 Aug 8 2004
\0x1b[1;35m/dev/ttyS0\0x1b[0m
# ls -l /dev/ttyS1
-rw-r--r--1 root root 16 May 21 2008
\0x1b[0;0m/dev/ttyS1\0x1b[0m
i have a question on the above output. the major and minor number for
ttyS0 are 4, 64 but fot ttyS1 i dont find a major number. what does
this indicate?
thanx for all the help.
regards,
Shareef
On Thu, May 22, 2008 at 2:18 AM, Tony Lindgren <[EMAIL PROTECTED]> wrote:
* Felipe Balbi <[EMAIL PROTECTED]> [080521 12:37]:
On Wed, 21 May 2008 10:44:28 -0700, Tony Lindgren <[EMAIL PROTECTED]> wrote:
* mohammed shareef <[EMAIL PROTECTED]> [080521 10:12]:
i see the following lines in the omap-osk.c file regarding the uarts:
static struct omap_uart_config osk_uart_config __initdata = {
.enabled_uarts = (1 << 0),
};
what does it mean? i want all my uarts (1,2,3) enabled. how do i have
to modify the above line?
How about try .enabled_uarts = 3
this would enable only uarts 1 and 2, right?
maybe it's enough :-p
Oh yeh, that's true :)
Tony
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Re: enabling uart2 on omap5912 osk
On Thu, 22 May 2008 04:01:17 +0530, "mohammed shareef" <[EMAIL PROTECTED]> wrote: > # cat /proc/tty/drivers > /dev/tty /dev/tty5 0 system:/dev/tty > /dev/console /dev/console5 1 system:console > /dev/ptmx/dev/ptmx 5 2 system > /dev/vc/0/dev/vc/0 4 0 system:vtmaster > serial /dev/ttyS 4 64-67 serial Here's what you're looking for. > pty_slave/dev/pts 136 0-1048575 pty:slave > pty_master /dev/ptm 128 0-1048575 pty:master > pty_slave/dev/ttyp 3 0-255 pty:slave > pty_master /dev/pty2 0-255 pty:master > unknown /dev/tty4 1-63 console > > this is the output.. It seems ok, no idea why the 4 doesn't appear in ls -l. Sorry :-s -- Best Regards, Felipe Balbi http://felipebalbi.com [EMAIL PROTECTED] -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: enabling uart2 on omap5912 osk
# cat /proc/tty/drivers /dev/tty /dev/tty5 0 system:/dev/tty /dev/console /dev/console5 1 system:console /dev/ptmx/dev/ptmx 5 2 system /dev/vc/0/dev/vc/0 4 0 system:vtmaster serial /dev/ttyS 4 64-67 serial pty_slave/dev/pts 136 0-1048575 pty:slave pty_master /dev/ptm 128 0-1048575 pty:master pty_slave/dev/ttyp 3 0-255 pty:slave pty_master /dev/pty2 0-255 pty:master unknown /dev/tty4 1-63 console this is the output.. regards and thanx, shareef On Thu, May 22, 2008 at 3:51 AM, Felipe Balbi <[EMAIL PROTECTED]> wrote: > > > On Thu, 22 May 2008 03:46:37 +0530, "mohammed shareef" > <[EMAIL PROTECTED]> wrote: >> when i type: >> >> ls -l /dev/ttyS0 >> crw-rw-rw-1 root root 4, 64 Aug 8 2004 >> \0x1b[1;35m/dev/ttyS0\0x1b[0m >> # ls -l /dev/ttyS1 >> -rw-r-- > > ... > > that's a bit weird. What does cat /proc/tty/drivers show ? > > -- > Best Regards, > > Felipe Balbi > http://felipebalbi.com > [EMAIL PROTECTED] > > -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: enabling uart2 on omap5912 osk
On Thu, 22 May 2008 03:46:37 +0530, "mohammed shareef" <[EMAIL PROTECTED]> wrote: > when i type: > > ls -l /dev/ttyS0 > crw-rw-rw-1 root root 4, 64 Aug 8 2004 > \0x1b[1;35m/dev/ttyS0\0x1b[0m > # ls -l /dev/ttyS1 > -rw-r-- ... that's a bit weird. What does cat /proc/tty/drivers show ? -- Best Regards, Felipe Balbi http://felipebalbi.com [EMAIL PROTECTED] -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: enabling uart2 on omap5912 osk
hi,
i have changed the line in omap_osk.c to:
static struct omap_uart_config osk_uart_config __initdata = {
.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
};
And all the three UARTs are enabled now as i can see in the kernel boot-log:
serial8250.0: ttyS0 at MMIO 0xfffb (irq = 46) is a ST16654
serial8250.0: ttyS1 at MMIO 0xfffb0800 (irq = 47) is a ST16654
serial8250.0: ttyS2 at MMIO 0xfffb9800 (irq = 15) is a ST16654
A node called ttyS0 is already there which is linked to uart0.
when i type:
ls -l /dev/ttyS0
crw-rw-rw-1 root root 4, 64 Aug 8 2004
\0x1b[1;35m/dev/ttyS0\0x1b[0m
# ls -l /dev/ttyS1
-rw-r--r--1 root root 16 May 21 2008
\0x1b[0;0m/dev/ttyS1\0x1b[0m
i have a question on the above output. the major and minor number for
ttyS0 are 4, 64 but fot ttyS1 i dont find a major number. what does
this indicate?
thanx for all the help.
regards,
Shareef
On Thu, May 22, 2008 at 2:18 AM, Tony Lindgren <[EMAIL PROTECTED]> wrote:
> * Felipe Balbi <[EMAIL PROTECTED]> [080521 12:37]:
>>
>>
>> On Wed, 21 May 2008 10:44:28 -0700, Tony Lindgren <[EMAIL PROTECTED]> wrote:
>> > * mohammed shareef <[EMAIL PROTECTED]> [080521 10:12]:
>> >> i see the following lines in the omap-osk.c file regarding the uarts:
>> >>
>> >> static struct omap_uart_config osk_uart_config __initdata = {
>> >>.enabled_uarts = (1 << 0),
>> >> };
>> >>
>> >>
>> >> what does it mean? i want all my uarts (1,2,3) enabled. how do i have
>> >> to modify the above line?
>> >
>> > How about try .enabled_uarts = 3
>>
>> this would enable only uarts 1 and 2, right?
>> maybe it's enough :-p
>
> Oh yeh, that's true :)
>
> Tony
>
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Re: enabling uart2 on omap5912 osk
* Felipe Balbi <[EMAIL PROTECTED]> [080521 12:37]:
>
>
> On Wed, 21 May 2008 10:44:28 -0700, Tony Lindgren <[EMAIL PROTECTED]> wrote:
> > * mohammed shareef <[EMAIL PROTECTED]> [080521 10:12]:
> >> i see the following lines in the omap-osk.c file regarding the uarts:
> >>
> >> static struct omap_uart_config osk_uart_config __initdata = {
> >>.enabled_uarts = (1 << 0),
> >> };
> >>
> >>
> >> what does it mean? i want all my uarts (1,2,3) enabled. how do i have
> >> to modify the above line?
> >
> > How about try .enabled_uarts = 3
>
> this would enable only uarts 1 and 2, right?
> maybe it's enough :-p
Oh yeh, that's true :)
Tony
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Re: enabling uart2 on omap5912 osk
On Wed, 21 May 2008 10:44:28 -0700, Tony Lindgren <[EMAIL PROTECTED]> wrote:
> * mohammed shareef <[EMAIL PROTECTED]> [080521 10:12]:
>> i see the following lines in the omap-osk.c file regarding the uarts:
>>
>> static struct omap_uart_config osk_uart_config __initdata = {
>> .enabled_uarts = (1 << 0),
>> };
>>
>>
>> what does it mean? i want all my uarts (1,2,3) enabled. how do i have
>> to modify the above line?
>
> How about try .enabled_uarts = 3
this would enable only uarts 1 and 2, right?
maybe it's enough :-p
--
Best Regards,
Felipe Balbi
http://felipebalbi.com
[EMAIL PROTECTED]
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Re: enabling uart2 on omap5912 osk
* mohammed shareef <[EMAIL PROTECTED]> [080521 10:12]:
> i see the following lines in the omap-osk.c file regarding the uarts:
>
> static struct omap_uart_config osk_uart_config __initdata = {
> .enabled_uarts = (1 << 0),
> };
>
>
> what does it mean? i want all my uarts (1,2,3) enabled. how do i have
> to modify the above line?
How about try .enabled_uarts = 3
Tony
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RE: enabling uart2 on omap5912 osk
Each bit enables one uart.
For uarts 1, 2, 3 it will look like:
static struct omap_uart_config osk_uart_config __initdata = {
.enabled_uarts = (1 << 0) | (1 << 1) | (1 << 2),
};
Just a hint. You can look board-xxx.c config files and see examples
there.
Roman Tereshonkov
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of ext mohammed
shareef
Sent: 21 May, 2008 20:12
To: Tony Lindgren
Cc: omap; [EMAIL PROTECTED]
Subject: Re: enabling uart2 on omap5912 osk
i see the following lines in the omap-osk.c file regarding the uarts:
static struct omap_uart_config osk_uart_config __initdata = {
.enabled_uarts = (1 << 0),
};
what does it mean? i want all my uarts (1,2,3) enabled. how do i have
to modify the above line?
thanx for the help.
regards,
Shareef
On Wed, May 21, 2008 at 9:10 PM, Tony Lindgren <[EMAIL PROTECTED]> wrote:
> * mohammed shareef <[EMAIL PROTECTED]> [080520 23:43]:
>> Hello,
>>
>> How do i enable UART2 on omap5912_osk in the kernel?
>>
>> and is there a way by which i can test if the uart2 has been
recongnised?
>>
>> i dont see uart module being initialized during the kernel boot-up.
>
> You need to enable it in board-osk.c, see enabled_uarts. Then to use
it
> you also need the right hardware attached to it.
>
> Tony
>
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Re: enabling uart2 on omap5912 osk
i see the following lines in the omap-osk.c file regarding the uarts:
static struct omap_uart_config osk_uart_config __initdata = {
.enabled_uarts = (1 << 0),
};
what does it mean? i want all my uarts (1,2,3) enabled. how do i have
to modify the above line?
thanx for the help.
regards,
Shareef
On Wed, May 21, 2008 at 9:10 PM, Tony Lindgren <[EMAIL PROTECTED]> wrote:
> * mohammed shareef <[EMAIL PROTECTED]> [080520 23:43]:
>> Hello,
>>
>> How do i enable UART2 on omap5912_osk in the kernel?
>>
>> and is there a way by which i can test if the uart2 has been recongnised?
>>
>> i dont see uart module being initialized during the kernel boot-up.
>
> You need to enable it in board-osk.c, see enabled_uarts. Then to use it
> you also need the right hardware attached to it.
>
> Tony
>
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the body of a message to [EMAIL PROTECTED]
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Re: enabling uart2 on omap5912 osk
* mohammed shareef <[EMAIL PROTECTED]> [080520 23:43]: > Hello, > > How do i enable UART2 on omap5912_osk in the kernel? > > and is there a way by which i can test if the uart2 has been recongnised? > > i dont see uart module being initialized during the kernel boot-up. You need to enable it in board-osk.c, see enabled_uarts. Then to use it you also need the right hardware attached to it. Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
enabling uart2 on omap5912 osk
Hello, How do i enable UART2 on omap5912_osk in the kernel? and is there a way by which i can test if the uart2 has been recongnised? i dont see uart module being initialized during the kernel boot-up. thank you. regards, Shareef -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
enabling uart2 on omap5912 osk
Hello, How do i enable UART2 on omap5912_osk in the kernel? and is there a way by which i can test if the uart2 has been recongnised? i dont see uart module being initialized during the kernel boot-up. thank you. regards, Shareef -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
