* HDQ 1 Wire on AM43x
@ 2013-11-29 6:11 Sourav Poddar
0 siblings, 0 replies; only message in thread
From: Sourav Poddar @ 2013-11-29 6:11 UTC (permalink / raw)
To: Paul Walmsley; +Cc: linux-omap@vger.kernel.org
Hi,
I am trying to cleanup and use HDQ 1wire on AM43x with
3.12-rc6 kernel.
Slave device connected on my board is DS18B20, for which I have
enabled the w1_therm.c driver. I populated the required hwmod entries and
the log obtained is inlined[1].
Is there any way to test this out?
In some older thread, I saw that there is some discussion on some
'hdq idle fixes' done to get the hdq working. ?
I see a lot of sys entires, but all looks to be the attributes and could
not
figure out any slave where I can 'cat' the temperature data.
Do I need to enable anything more apart from what my below configs looks
like:
#
CONFIG_W1=y
CONFIG_W1_CON=y
#
# 1-wire Bus Masters
#
# CONFIG_W1_MASTER_DS2490 is not set
# CONFIG_W1_MASTER_DS2482 is not set
# CONFIG_W1_MASTER_DS1WM is not set
# CONFIG_W1_MASTER_GPIO is not set
CONFIG_HDQ_MASTER_OMAP=y
#
# 1-wire Slaves
#
CONFIG_W1_SLAVE_THERM=y
Thanks,
Sourav
[1]:
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 3.12.0-67367-g2d1978c-dirty
(a0131647@a0131647) (gcc version 4.7.3 20130226 (prerelease)
(crosstool-NG linaro-1.13.1-4.7-2013.03
[ 0.000000] CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7),
cr=10c53c7d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing
instruction cache
[ 0.000000] Machine: Generic AM43 (Flattened Device Tree), model: TI
AM43x EPOS EVM
[ 0.000000] cma: CMA: reserved 16 MiB at 9e800000
[ 0.000000] Memory policy: ECC disabled, Data cache writeback
[ 0.000000] CPU: All CPU(s) started in SVC mode.
[ 0.000000] AM437x ES1.0 (sgx neon )
[ 0.000000] PERCPU: Embedded 9 pages/cpu @c12c9000 s14656 r8192
d14016 u36864
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on.
Total pages: 129280
[ 0.000000] Kernel command line: root=/dev/ram0 rw mem=512M
console=ttyO0,115200n8 initrd=0x82000000,20M ramdisk_size=20480
no_console_suspend
[ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144
bytes)
[ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072
bytes)
[ 0.000000] Memory: 464604K/521216K available (6012K kernel code,
690K rwdata, 2340K rodata, 426K init, 5536K bss, 56612K reserved, 0K
highmem)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
[ 0.000000] vmalloc : 0xe0800000 - 0xff000000 ( 488 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xe0000000 ( 512 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0xc0008000 - 0xc083058c (8354 kB)
[ 0.000000] .init : 0xc0831000 - 0xc089b940 ( 427 kB)
[ 0.000000] .data : 0xc089c000 - 0xc0948b20 ( 691 kB)
[ 0.000000] .bss : 0xc0948b20 - 0xc0eb0f00 (5537 kB)
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] RCU restricting CPUs from NR_CPUS=2 to nr_cpu_ids=1.
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000000] GIC CPU mask not found - kernel will fail to boot.
[ 0.000000] GIC CPU mask not found - kernel will fail to boot.
[ 0.000000] OMAP clockevent source: timer1 at 32786 Hz
[ 0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps
every 131071999ms
[ 0.000000] OMAP clocksource: 32k_counter at 32768 Hz
[ 0.000000] Console: colour dummy device 80x30
.....
[ 2.861450] Driver for 1-wire Dallas network protocol.
[ 2.878417] omap_hdq 48347000.hdq: OMAP HDQ Hardware Rev 0.:. Driver
in Interrupt mode
[ 3.250061] w1_master_driver w1_bus_master1: Family 1 for
01.000000000000.3d is not registered.
[ 3.262054] omap_wdt: OMAP Watchdog Timer Rev 0x01: initial timeout
60 sec
[ 3.275054] edma-dma-engine edma-dma-engine.0: allocated channel for 0:25
[ 3.282073] edma-dma-engine edma-dma-engine.0: allocated channel for 0:24
[ 3.336029] ledtrig-cpu: registered to indicate activity on CPUs
[ 3.342712] edma-dma-engine edma-dma-engine.0: allocated channel for 0:36
[ 3.349639] omap-sham 53100000.sham: hw accel on OMAP rev 0.0
[ 3.364746] omap-aes 53501000.aes: OMAP AES hw accel rev: 0.1
[ 3.370758] edma-dma-engine edma-dma-engine.0: allocated channel for 0:5
......
[ 3.675811] platform connector.6: Driver connector-hdmi requests
probe deferral
[ 3.687438] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[ 3.712982] RAMDISK: ext2 filesystem found at block 0
[ 3.718017] RAMDISK: Loading 15360KiB [1 disk] into ram disk... [
3.724517] connector-hdmi connector.6: failed to find video source
[ 3.730957] platform connector.6: Driver connector-hdmi requests
probe deferral
done.
[ 4.392822] EXT2-fs (ram0): warning: mounting unchecked fs, running
e2fsck is recommended
[ 4.401641] VFS: Mounted root (ext2 filesystem) on device 1:0.
[ 4.408569] devtmpfs: mounted
[ 4.412353] Freeing unused kernel memory: 424K (c0831000 - c089b000)
Mounting proc : OK
Mounting sysfs : OK
Mounting /dev : OK
Creating local mdev devices
umount: can't umount /mnt/mmc: Invalid argument
***********************************************
Starting System Init for: Generic AM43 (Flattened Device Tree)
Release: 3.12.0-67367-g2d1978c-dirty
***********************************************
Saving kernel ring buffer : OK
Mounting devpts : OK
Setting up networking
Configuring lo : OK
Configuring eth0 : ifup: can't open '/etc/network/interfaces': No such
file or directory
Failed
Starting syslogd : OK
Starting klogd : OK
Mounting filesystems : OK
Mounting Debug filesystem : OK
Please press Enter to activate this console.
/ #
/ # cd /
/ #
/ #
/ # cd /sys/bus/
/sys/bus # ls
clockevents event_source mdio_bus scsi soc w1
clocksource hid mmc sdio spi
workqueue
cpu i2c platform serio usb
/sys/bus # cd w1/
/sys/bus/w1 # ls
devices drivers_autoprobe uevent
drivers drivers_probe
/sys/bus/w1 # cd devices/
/sys/bus/w1/devices # ls
01-000000000000 w1_bus_master1
/sys/bus/w1/devices # cd w1_bus_master1/
/sys/devices/w1_bus_master1 # ls
01-000000000000 w1_master_attempts w1_master_search
driver w1_master_max_slave_count w1_master_slave_count
power w1_master_name w1_master_slaves
subsystem w1_master_pointer w1_master_timeout
uevent w1_master_pullup
w1_master_add w1_master_remove
/sys/devices/w1_bus_master1 # cd ..
/sys/bus/w1/devices # ls
01-000000000000 w1_bus_master1
/sys/bus/w1/devices # cd ..
/sys/bus/w1 # ls
devices drivers_autoprobe uevent
drivers drivers_probe
/sys/bus/w1 # cd drivers/
/sys/bus/w1/drivers # ls
w1_master_driver w1_slave_driver
/sys/bus/w1/drivers # cd w1_master_driver/
/sys/bus/w1/drivers/w1_master_driver # ls
bind uevent unbind w1_bus_master1
/sys/bus/w1/drivers/w1_master_driver # cd w1_bus_master1/
/sys/devices/w1_bus_master1 # ls
01-000000000000 w1_master_attempts w1_master_search
driver w1_master_max_slave_count w1_master_slave_count
power w1_master_name w1_master_slaves
subsystem w1_master_pointer w1_master_timeout
uevent w1_master_pullup
w1_master_add w1_master_remove
/sys/devices/w1_bus_master1 # cd ..
/sys/bus/w1/drivers/w1_master_driver # cd ..
/sys/bus/w1/drivers # ls
w1_master_driver w1_slave_driver
/sys/bus/w1/drivers # cd w1_slave_driver/
/sys/bus/w1/drivers/w1_slave_driver # ls
01-000000000000 bind uevent unbind
/sys/bus/w1/drivers/w1_slave_driver # cd 01-000000000000/
/sys/devices/w1_bus_master1/01-000000000000 # ls
driver id name power rw subsystem uevent
/sys/devices/w1_bus_master1/01-000000000000 #
/sys/devices/w1_bus_master1/01-000000000000 #
/sys/devices/w1_bus_master1/01-000000000000 # cd ..
/sys/bus/w1/drivers/w1_slave_driver # cd
/ # cd /sys/class/
/sys/class # ls
ata_device extcon input mmc_host rtc ubi
ata_link firmware lcd mtd scsi_device udc
ata_port gpio leds net scsi_disk usbmon
backlight graphics mbox phy scsi_host vc
bdi hwmon mdio_bus power_supply spi_master
vtconsole
block i2c-adapter mem pwm thermal
watchdog
dma i2c-dev misc regulator tty
/sys/class # cd ..
/sys # cd ..
/ #
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2013-11-29 6:11 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-11-29 6:11 HDQ 1 Wire on AM43x Sourav Poddar
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.