[#4914] rts/cts doesn't work on bf548 ezkit board.
Submitted By: Mingquan Pan
Open Date
2009-02-17 02:42:59 Close Date
2009-07-02 05:37:45
Priority:
Medium Assignee:
Sonic Zhang
Status:
Closed Fixed In Release:
N/A
Found In Release:
N/A Release:
Category:
N/A Board:
N/A
Processor:
BF548 Silicon Revision:
Is this bug repeatable?:
Yes Resolution:
Fixed
Uboot version or rev.:
Toolchain version or rev.:
4.1 of Jan 16
App binary format:
N/A
Summary: rts/cts doesn't work on bf548 ezkit board.
Details:
rts/cts doesn't work on bf548 ezkit board.
when selecting Enable UART1 hardware flow control and CTS/RTS case for bf548 ezkit board, boot up the kernel, run the case, what is input can be seen on screen at once instead of being held for 5 minutes:
## Booting kernel from Legacy Image at 01000000 ...
Image Name: Linux-2.6.28.5-ADI-2009R1-pre-sv
Created: 2009-02-17 6:46:02 UTC
Image Type: Blackfin Linux Kernel Image (gzip compressed)
Data Size: 5249459 Bytes = 5 MB
Load Address: 00001000
Entry Point: 0029160c
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
Starting Kernel at = 0029160c
Linux version 2.6.28.5-ADI-2009R1-pre-svn6104 (test@my-local-machine) (gcc version 4.1.2 (ADI svn)) #15 Tue Feb 17 14:45:48 CST 2009
console [early_BFuart0] enabled
early printk enabled on early_BFuart0
Board Memory: 64MB
Kernel Managed Memory: 64MB
Memory map:
fixedcode = 0x00000400-0x00000490
text = 0x00001000-0x001b9ab0
rodata = 0x001b9ab0-0x0024b838
bss = 0x0024b840-0x0026122c
data = 0x0026122c-0x0027c000
stack = 0x0027a000-0x0027c000
init = 0x0027c000-0x009ec000
available = 0x009ec000-0x03dff000
DMA Zone = 0x03e00000-0x04000000
Hardware Trace Active and Enabled
Boot Mode: 3
Reset caused by Software reset
Blackfin support (C) 2004-2009 Analog Devices, Inc.
Compiled for ADSP-BF548 Rev 0.0
Blackfin Linux support by blackfin.uclinux.org/
Processor Speed: 525 MHz core clock and 131 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: 15747
Kernel command line: root=/dev/mtdblock0 rw clkin_hz=25000000 earlyprintk=serial,uart1,57600 console=tty0 console=ttyBF0,57600 ip=10.100.4.50:10.100.4.174f
Configuring Blackfin Priority Driven Interrupts
PID hash table entries: 256 (order: 8, 1024 bytes)
Console: colour dummy device 80x25
console [tty0] enabled
Linux version 2.6.28.5-ADI-2009R1-pre-svn6104 (test@my-local-machine) (gcc version 4.1.2 (ADI svn)) #15 Tue Feb 17 14:45:48 CST 2009
console [early_BFuart0] enabled
early printk enabled on early_BFuart0
Board Memory: 64MB
Kernel Managed Memory: 64MB
Memory map:
fixedcode = 0x00000400-0x00000490
text = 0x00001000-0x001b9ab0
rodata = 0x001b9ab0-0x0024b838
bss = 0x0024b840-0x0026122c
data = 0x0026122c-0x0027c000
stack = 0x0027a000-0x0027c000
init = 0x0027c000-0x009ec000
available = 0x009ec000-0x03dff000
DMA Zone = 0x03e00000-0x04000000
Hardware Trace Active and Enabled
Boot Mode: 3
Reset caused by Software reset
Blackfin support (C) 2004-2009 Analog Devices, Inc.
Compiled for ADSP-BF548 Rev 0.0
Blackfin Linux support by blackfin.uclinux.org/
Processor Speed: 525 MHz core clock and 131 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: 15747
Kernel command line: root=/dev/mtdblock0 rw clkin_hz=25000000 earlyprintk=serial,uart1,57600 console=tty0 console=ttyBF0,57600 ip=10.100.4.50:10.100.4.174f
Configuring Blackfin Priority Driven Interrupts
PID hash table entries: 256 (order: 8, 1024 bytes)
Console: colour dummy device 80x25
console [tty0] enabled
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: 52740k/65536k RAM, (7616k init code, 1762k kernel code, 778k data, 2048k dma, 588k reserved)
Calibrating delay loop... 1046.52 BogoMIPS (lpj=2093056)
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 (42 KB free)
Blackfin L2 SRAM: 128 KB (128 KB free)
PDA for CPU0 reserved at 0024d0f8
net_namespace: 288 bytes
NET: Registered protocol family 16
Blackfin GPIO Controller
Blackfin DMA Controller
ezkit_init(): registering device resources
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
musb_hdrc: version 6.0, musb-dma, host, debug=0
musb_hdrc: USB Host mode controller at ffc03c00 using DMA, IRQ 82
musb_hdrc musb_hdrc.0: MUSB HDRC host driver
musb_hdrc musb_hdrc.0: new USB bus registered, assigned bus number 1
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
dma_alloc_init: dma_page @ 0x03d10000 - 512 pages at 0x03e00000
hub 1-0:1.0: 1 port detected
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 103
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler cfq registered
bf54x-lq043: FrameBuffer initializing...
Console: switching to colour frame buffer device 80x24
bfin-otp: initialized
Serial: Blackfin serial driver
bfin-uart.1: ttyBF0 at MMIO 0xffc02000 (irq = 48) is a BFIN-UART
brd: module loaded
smsc911x: Driver version 2007-07-13.
eth0: SMSC911x MAC Address: 3e:cf:67:d8:4f:73
Driver 'sd' needs updating - please use bus_type methods
Driver 'sr' needs updating - please use bus_type methods
register bfin atapi driver
scsi0 : pata-bf54x
ata1: PATA max UDMA/66 irq 68
ata1.00: ATA-6: TOSHIBA MK4032GAX, AD101A, max UDMA/100
ata1.00: 78140160 sectors, multi 16: LBA48
ata1.00: configured for UDMA/66
blk_queue_max_hw_segments: set to minimum 1
scsi 0:0:0:0: Direct-Access ATA TOSHIBA MK4032GA AD10 PQ: 0 ANSI: 5
sd 0:0:0:0: [sda] 78140160 512-byte hardware sectors: (40.0 GB/37.2 GiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sd 0:0:0:0: [sda] 78140160 512-byte hardware sectors: (40.0 GB/37.2 GiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sda: sda1 sda2
sd 0:0:0:0: [sda] Attached SCSI disk
physmap platform flash device: 02000000 at 20000000
physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank
Intel/Sharp Extended Query Table at 0x010A
Intel/Sharp Extended Query Table at 0x010A
Intel/Sharp Extended Query Table at 0x010A
Intel/Sharp Extended Query Table at 0x010A
Intel/Sharp Extended Query Table at 0x010A
Using buffer write method
Using auto-unlock on power-up/resume
cfi_cmdset_0001: Erase suspend on write enabled
RedBoot partition parsing not available
Using physmap partition information
Creating 3 MTD partitions on "physmap-flash.0":
0x00000000-0x00040000 : "bootloader(nor)"
0x00040000-0x00440000 : "linux kernel(nor)"
0x00440000-0x02000000 : "file system(nor)"
BF5xx on-chip NAND FLash Controller Driver, Version 1.2 (c) 2007 Analog Devices, Inc.
bf5xx-nand bf5xx-nand.0: page_size=256, data_width=8, wr_dly=3, rd_dly=3
NAND device: Manufacturer ID: 0x20, Chip ID: 0xda (ST Micro NAND 256MiB 3,3V 8-bit)
Creating 2 MTD partitions on "NAND 256MiB 3,3V 8-bit":
0x00000000-0x00400000 : "linux kernel(nand)"
0x00400000-0x10000000 : "file system(nand)"
m25p80 spi0.1: m25p16 (2048 Kbytes)
Creating 2 MTD partitions on "m25p80":
0x00000000-0x00040000 : "bootloader(spi)"
0x00040000-0x00200000 : "linux kernel(spi)"
bfin-spi bfin-spi.0: Blackfin on-chip SPI Controller Driver, Version 1.0, regs_base@ffc00500, dma channel@4
bfin-spi bfin-spi.1: Blackfin on-chip SPI Controller Driver, Version 1.0, regs_base@ffc02300, dma channel@5
input: bf54x-keys as /devices/platform/bf54x-keys/input/input0
bf54x-keys: Blackfin BF54x Keypad registered IRQ 76
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@ffc00700
i2c-bfin-twi i2c-bfin-twi.1: Blackfin BF5xx on-chip I2C TWI Contoller, regs_base@ffc02200
bfin-wdt: initialized: timeout=20 sec (nowayout=0)
hid_zpff: Unknown symbol _input_ff_create_memless
usbcore: registered new interface driver usbhid
usbhid: v2.6:USB HID core driver
Advanced Linux Sound Architecture Driver Version 1.0.18rc3.
ASoC version 0.13.2
dma rx:0 tx:1, err irq:10, regs:ffc00800
AD1980 SoC Audio Codec
asoc: AC97 <-> bf5xx-ac97 mapping ok
ALSA device list:
#0: bf5xx-board (AD1980)
TCP cubic registered
NET: Registered protocol family 17
rtc-bfin rtc-bfin: setting system clock to 2003-02-26 16:10:12 UTC (1046275812)
eth0: SMSC911x/921x identified at 0x24000000, IRQ: 175
eth0: link down
IP-Config: Complete:
device=eth0, addr=10.100.4.50, mask=255.255.255.0, gw=10.100.4.174,
host=bf548-ezkit, domain=, nis-domain=(none),
bootserver=10.100.4.174, rootserver=10.100.4.174, rootpath=
Freeing unused kernel memory: 7616k freed
eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
_____________________________________
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| - blackfin.uclinux.org/
\ YP" `| 8P `. - docs.blackfin.uclinux.org/
/ \.___.d| .' - www.uclinux.org/
`--..__)8888P`._.' jgs/a:f - www.analog.com/blackfin
Have a lot of fun...
BusyBox v1.13.2 (2009-02-17 12:33:15 CST) built-in shell (msh)
Enter 'help' for a list of built-in commands.
root:/> cd bin/
root:/bin> ./rtscts_test ttyBF0 -t
Disable RTS on /dev/ttyBF0 for 5 seconds.
If you hit any keys, you won't see them.
sdfsdfsdfgs
RTS is enabled again.
You should see the keys you hit just now.
root:/bin> sdfsdfsdfgs
sdfsdfsdfgs: not found
Follow-ups
--- Sonic Zhang 2009-03-02 04:36:32
The CTS RTS PIN connection on BF548 UART port is defined as a modem device not
as a host device. In order to test it under Linux, please nake a cross UART
cable to exchange CTS and RTS signal.
--- Sonic Zhang 2009-03-02 05:21:11
Fixed.
--- Sonic Zhang 2009-03-02 05:24:06
Fixed.
--- Sonic Zhang 2009-03-02 21:05:26
A bit correction.
The CTS RTS PIN connection on BF548 UART port is defined as a host machine. If
you test it in Linux with the other PC host, you connect 2 hosts together.
Please make a cross UART cable to exchange CTS and RTS signal.
--- Mingquan Pan 2009-07-02 05:37:45
This case can test ok now. Close.
--- Sonic Zhang 2009-07-02 05:55:12
More correction.
It is actually not a cross UART cable but 2 jump cables between SW7.1~6 and
SW7.3~8 on bf548-ezkit board.
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