linux-kernel - [OMAP-Serial] omap ttyO2 problem

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 21 May 2014 21:45:02 -0700 (PDT)
From:	Varka Bhadram <varkab@...c.in>
To:	linux-kernel@...r.kernel.org
Subject: [OMAP-Serial] omap ttyO2 problem

hi,

I am using the kernel 3.12 from beagleboard. I loaded the overlay to enable
the ttyO2 on BBB.

    echo BB-UART1 > /sys/devices/bone_capemgr.*/slots

It created the ttyO2 device node in /dev.

in dmesg :
[   76.077679] bone-capemgr bone_capemgr.6: part_number 'BB-UART1', version
'N/A'
[   76.077761] bone-capemgr bone_capemgr.6: slot #7: generic override
[   76.077789] bone-capemgr bone_capemgr.6: bone: Using override eeprom data
at slot 7
[   76.077818] bone-capemgr bone_capemgr.6: slot #7: 'Override Board
Name,00A0,Override Manuf,BB-UART1'
[   76.078444] bone-capemgr bone_capemgr.6: slot #7: Requesting part
number/version based 'BB-UART1-00A0.dtbo
[   76.078479] bone-capemgr bone_capemgr.6: slot #7: Requesting firmware
'BB-UART1-00A0.dtbo' for board-name 'Override Board Name', version '00A0'
[   76.086769] bone-capemgr bone_capemgr.6: slot #7: dtbo
'BB-UART1-00A0.dtbo' loaded; converting to live tree
[   76.087041] bone-capemgr bone_capemgr.6: slot #7: #2 overlays
[   76.116716] of_get_named_gpio_flags: can't parse gpios property of node
'/ocp/serial@...24000[0]'
[   76.140196] *omap_uart 48024000.serial:
serial_omap_get_context_loss_count failed : -22*
[   76.140323] omap_uart 48024000.serial: serial_omap_type+2
[   76.140347] 48024000.serial: ttyO2 at MMIO 0x48024000 (irq = 90,
base_baud = 3000000) is a OMAP UART2
[   76.140368] omap_uart 48024000.serial: serial_omap_pm+2
[   76.140394] omap_uart 48024000.serial: serial_omap_set_mctrl+2
[   76.140415] omap_uart 48024000.serial: serial_omap_pm+2
[   76.143291] bone-capemgr bone_capemgr.6: slot #7: Applied #2 overlays.


How can i test the this UART working ?

I write a simple code to open("/dev/ttyO2",O_RDWR), and writes "hello", But
i am not getting the data on TX pin (P9.24) of BBB.

Am i missing any thing ?


Thanks in advance...

Reagrds,
Varka Bhadram. 



--
View this message in context: http://linux-kernel.2935.n7.nabble.com/OMAP-Serial-omap-ttyO2-problem-tp865529.html
Sent from the Linux Kernel mailing list archive at Nabble.com.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/