[#5303] twi lcd fails to open lcd device on bf537 stamp
Submitted By: Mingquan Pan
Open Date
2009-07-01 05:01:20 Close Date
2009-07-02 23:34:14
Priority:
Medium High Assignee:
Michael Hennerich
Status:
Closed Fixed In Release:
N/A
Found In Release:
N/A Release:
Category:
N/A Board:
N/A
Processor:
BF537 Silicon Revision:
Is this bug repeatable?:
Yes Resolution:
Fixed
Uboot version or rev.:
Toolchain version or rev.:
09R1-RC7
App binary format:
N/A
Summary: twi lcd fails to open lcd device on bf537 stamp
Details:
twi lcd fails to open lcd device on bf537 stamp.
## Booting kernel from Legacy Image at 02000000 ...
Image Name: Linux-2.6.28.10-ADI-2009R1-svn68
Created: 2009-07-01 8:56:39 UTC
Image Type: Blackfin Linux Kernel Image (gzip compressed)
Data Size: 4552987 Bytes = 4.3 MB
Load Address: 00001000
Entry Point: 00194594
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
Starting Kernel at = 00194594
Linux version 2.6.28.10-ADI-2009R1-svn6887 (test@my-local-machine) (gcc version 4.1.2 (ADI svn)) #34 Wed Jul 1 16:56:28 CST 2009
console [early_BFuart0] enabled
early printk enabled on early_BFuart0
Warning: limiting memory to 56MB due to hardware anomaly 05000263
Board Memory: 64MB
Kernel Managed Memory: 64MB
Memory map:
fixedcode = 0x00000400-0x00000490
text = 0x00001000-0x0010c7c0
rodata = 0x0010c7c0-0x00162f4c
bss = 0x00163000-0x001747ec
data = 0x001747ec-0x00186000
stack = 0x00184000-0x00186000
init = 0x00186000-0x00874000
available = 0x00874000-0x037ff000
DMA Zone = 0x03f00000-0x04000000
Hardware Trace Active and Enabled
Boot Mode: 0
Reset caused by Software reset
Blackfin support (C) 2004-2009 Analog Devices, Inc.
Compiled for ADSP-BF537 Rev 0.2
Blackfin Linux support by http://blackfin.uclinux.org/
Processor Speed: 500 MHz core clock and 125 MHz System Clock
NOMPU: setting up cplb tables
Instruction Cache Enabled for CPU0
Data Cache Enabled for CPU0 (write-back)
Built 1 zonelists in Zone order, mobility grouping off. Total pages: 14223
Kernel command line: root=/dev/mtdblock0 rw earlyprintk=serial,uart0,57600
Configuring Blackfin Priority Driven Interrupts
PID hash table entries: 256 (order: 8, 1024 bytes)
console handover: boot [early_BFuart0] -> real [ttyBF0]
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory available: 48116k/65536k RAM, (7096k init code, 1069k kernel code, 487k data, 1024k dma, 7744k reserved)
Calibrating delay loop... 995.32 BogoMIPS (lpj=1990656)
Security Framework initialized
Mount-cache hash table entries: 512
Blackfin Scratchpad data SRAM: 4 KB
Blackfin L1 Data A SRAM: 16 KB (15 KB free)
Blackfin L1 Data B SRAM: 16 KB (16 KB free)
Blackfin L1 Instruction SRAM: 48 KB (37 KB free)
net_namespace: 288 bytes
NET: Registered protocol family 16
Blackfin DMA Controller
stamp_init(): registering device resources
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
NET: Registered protocol family 1
msgmni has been set to 93
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler cfq registered
Serial: Blackfin serial driver
bfin-uart.1: ttyBF0 at MMIO 0xffc00400 (irq = 18) is a BFIN-UART
brd: module loaded
bfin_mii_bus: probed
bfin_mac: attached PHY driver [SMSC LAN83C185] (mii_bus:phy_addr=0:01, irq=-1, mdc_clk=2500000Hz(mdc_div=24)@sclk=125MHz)
bfin_mac bfin_mac.0: Blackfin on-chip Ethernet MAC driver, Version 1.1
bfin-spi bfin-spi.0: Blackfin on-chip SPI Controller Driver, Version 1.0, regs_base@ffc00500, dma channel@7
rtc-bfin rtc-bfin: rtc core: registered rtc-bfin as rtc0
i2c /dev entries driver
i2c-bfin-twi i2c-bfin-twi.0: Blackfin BF5xx on-chip I2C TWI Contoller, regs_base@ffc01400
AD5252 Attached
bfin-wdt: initialized: timeout=20 sec (nowayout=0)
TCP cubic registered
NET: Registered protocol family 17
rtc-bfin rtc-bfin: setting system clock to 1970-01-01 00:34:50 UTC (2090)
Freeing unused kernel memory: 7096k freed
dma_alloc_init: dma_page @ 0x00871000 - 256 pages at 0x03f00000
_____________________________________
a8888b. / Welcome to the uClinux distribution \
d888888b. / _ _ \
8P"YP"Y88 / | | |_| __ __ (TM) |
8|o||o|88 _____/ | | _ ____ _ _ \ \/ / |
8' .88 \ | | | | _ \| | | | \ / |
8`._.' Y8. \ | |__ | | | | | |_| | / \ |
d/ `8b. \ \____||_|_| |_|\____|/_/\_\ |
dP . Y8b. \ For embedded processors including |
d8:' " `::88b \ the Analog Devices Blackfin /
d8" 'Y88b \___________________________________/
:8P ' :888
8a. : _a88P For further information, check out:
._/"Yaa_: .| 88P| - http://blackfin.uclinux.org/
\ YP" `| 8P `. - http://docs.blackfin.uclinux.org/
/ \.___.d| .' - http://www.uclinux.org/
`--..__)8888P`._.' jgs/a:f - https://www.analog.com/blackfin
Have a lot of fun...
BusyBox v1.13.4 (2009-06-30 12:31:57 CST) built-in shell (msh)
Enter 'help' for a list of built-in commands.
root:/> modprobe bfin_twi_lcd
TWI LCD Driver v0.00
root:/> cd sys/bus/i2c/devices
root:/sys/bus/i2c/devices> ls
0-0027 0-002f
root:/sys/bus/i2c/devices> cd 0-002f/
root:/sys/devices/platform/i2c-bfin-twi.0/i2c-adapter/i2c-0/0-002f> ls
driver name read_w1 subsystem write_w1
modalias power read_w3 uevent write_w3
root:/sys/devices/platform/i2c-bfin-twi.0/i2c-adapter/i2c-0/0-002f> echo 4 > wri
te_w1
root:/sys/devices/platform/i2c-bfin-twi.0/i2c-adapter/i2c-0/0-002f> cat read_w1
4
root:/sys/devices/platform/i2c-bfin-twi.0/i2c-adapter/i2c-0/0-002f> twilcd_test
-h
TWI LCD Test Application
Usage: twilcd_test [-h?v] [-c] [-d CONTROLLER] [-p POSITION] [Message String]
-h? this help
-v print version info
-c Clear Display
-d Number use 1,2,3 for CONTROLLER 1,2,BOTH
-p Char POS Position where to put the string
Example: twilcd_test -p 0 "Hello World !"
root:/sys/devices/platform/i2c-bfin-twi.0/i2c-adapter/i2c-0/0-002f> twilcd_test
-p 0 "Hello World! "
TWI LCD Test Application
Can't open dev lcd.
root:/sys/devices/platform/i2c-bfin-twi.0/i2c-adapter/i2c-0/0-002f> ls /dev/
console null ram2 stdin
cpu_dma_latency ptmx ram3 stdout
fd pts ram4 tty
full ram0 ram5 ttyBF0
i2c-0 ram1 ram6 uinput
kmsg ram10 ram7 urandom
lcd ram11 ram8 watchdog
log ram12 ram9 zero
mem ram13 random
network_latency ram14 rtc0
network_throughput ram15 stderr
Follow-ups
--- Michael Hennerich 2009-07-02 07:02:37
This bug was introduced in svn commit:
Revision 6418 rename TWI_LCD to BFIN_TWI_LCD
Fixed on branch 2009R1 and trunk
-Michael
root:/> modprobe bfin_twi_lcd
TWI LCD Driver v0.00
root:/> twilcd_test -p 0 "Hallo"
TWI LCD Test Application
Position : 0
Message : Hallo
root:/>
--- Mingquan Pan 2009-07-02 23:34:14
Yes,fixed.Close.
Files
Changes
Commits
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Duplicates
Associations
Tags
File Name File Type File Size Posted By
config.twilcd application/octet-stream 33494 Mingquan Pan