[#5312] power management of suspend to ram fails in BF533-STAMP

Submitted By: Vivi Li

Open Date

2009-07-03 04:51:24 Close Date

2009-07-03 07:25:17

Priority:

Medium High Assignee:

Michael Hennerich

Status:

Closed Fixed In Release:

N/A

Found In Release:

N/A Release:

Category:

Drivers Board:

STAMP

Processor:

BF533 Silicon Revision:

Is this bug repeatable?:

Yes Resolution:

Rejected

Uboot version or rev.:

Toolchain version or rev.:

gcc4.1_09r1-rc7

App binary format:

N/A

Summary: power management of suspend to ram fails in BF533-STAMP

Details:

power management of suspend to ram fails in BF533-STAMP.

U-Boot 2008.10-svn1956 (ADI-2009R1-rc2) (Jul 2 2009 - 20:18:17)

CPU: ADSP bf533-0.3 (Detected Rev: 0.3) (bypass boot)

Board: ADI BF533 Stamp board

Support: http://blackfin.uclinux.org/

Clock: VCO: 497.664 MHz, Core: 497.664 MHz, System: 99.532 MHz

RAM: 128 MB

Flash: 4 MB

In: serial

Out: serial

Err: serial

Net: MAC: 00:E0:22:FE:07:5B

Hit any key to stop autoboot: 0

bfin> run ramboot

Using MAC Address 00:E0:22:FE:07:5B

TFTP from server 10.100.4.174; our IP address is 10.100.4.50

Filename 'uImage'.

Load address: 0x1000000

Loading: #################################################################

#################################################################

######################

done

Bytes transferred = 4138323 (3f2553 hex)

## Booting kernel from Legacy Image at 01000000 ...

Image Name: Linux-2.6.28.10-ADI-2009R1-svn68

Created: 2009-07-02 3:42:10 UTC

Image Type: Blackfin Linux Kernel Image (gzip compressed)

Data Size: 4138259 Bytes = 3.9 MB

Load Address: 00001000

Entry Point: 0019f3c4

Verifying Checksum ... OK

Uncompressing Kernel Image ... OK

Starting Kernel at = 0019f3c4

Linux version 2.6.28.10-ADI-2009R1-svn6881 (test@uclinux77-bf533-ad1836-spi) (gcc version 4.1.2 (ADI svn)) #16 Wed Jul 1 21:41:59

console [early_BFuart0] enabled

early printk enabled on early_BFuart0

Warning: limiting memory to 56MB due to hardware anomaly 05000263

Board Memory: 128MB

Kernel Managed Memory: 128MB

Memory map:

fixedcode = 0x00000400-0x00000490

text = 0x00001000-0x0011d340

rodata = 0x0011d340-0x00172078

bss = 0x00173000-0x00183d0c

data = 0x00183d0c-0x00194000

stack = 0x00192000-0x00194000

init = 0x00194000-0x00847000

available = 0x00847000-0x037ff000

DMA Zone = 0x07f00000-0x08000000

Hardware Trace Active and Enabled

Boot Mode: 0

Reset caused by Software reset

Compiled for ADSP-BF533 Rev 0.3

Blackfin Linux support by http://blackfin.uclinux.org/

Processor Speed: 497 MHz core clock and 99 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 clkin_hz=11059200 earlyprintk=serial,uart0,57600 console=ttyBF0,57600 ip=10.100.4.50f

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: 48296k/131072k RAM, (6860k init code, 1136k kernel code, 476k data, 1024k dma, 73280k reserved)

Calibrating delay loop... 991.23 BogoMIPS (lpj=1982464)

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: 64 KB (53 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 94

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 = 21) is a BFIN-UART

brd: module loaded

smc91x.c: v1.1, sep 22 2004 by Nicolas Pitre <nico@cam.org>

eth0: SMC91C11xFD (rev 1) at 20300300 IRQ 40 [nowait]

eth0: Ethernet addr: 00:e0:22:fe:07:5b

rtc-bfin rtc-bfin: rtc core: registered rtc-bfin as rtc0

bfin-wdt: initialized: timeout=20 sec (nowayout=0)

Advanced Linux Sound Architecture Driver Version 1.0.18rc3.

ALSA device list:

No soundcards found.

TCP cubic registered

NET: Registered protocol family 17

rtc-bfin rtc-bfin: setting system clock to 1970-01-01 07:53:29 UTC (28409)

eth0: link down

IP-Config: Complete:

device=eth0, addr=10.100.4.50, mask=255.255.255.0, gw=10.100.4.174,

host=bf533-stamp, domain=, nis-domain=(none),

bootserver=10.100.4.174, rootserver=10.100.4.174, rootpath=

Freeing unused kernel memory: 6860k freed

dma_alloc_init: dma_page @ 0x00844000 - 256 pages at 0x07f00000

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| - http://blackfin.uclinux.org/

\ YP" `| 8P `. - http://docs.blackfin.uclinux.org/

/ \.___.d| .' - http://www.uclinux.org/

`--..__)8888P`._.' jgs/a:f - http://www.analog.com/blackfin

Have a lot of fun...

BusyBox v1.13.4 (2009-07-01 21:38:25 MDT) built-in shell (msh)

Enter 'help' for a list of built-in commands.

root:/> rtcwake -s 10 -m mem

wakeup from "mem" at Thu Jan 1 07:53:46 1970

rtcwake: short write

root:/> version

kernel: Linux release 2.6.28.10-ADI-2009R1-svn6881, build #16 Wed Jul 1 21:41:56 MDT 2009

toolchain: bfin-linux-uclibc-gcc release gcc version 4.1.2 (ADI svn)

user-dist: release svn-8400, build #253 Wed Jul 1 21:41:06 MDT 2009

root:/>

Follow-ups

--- Michael Hennerich 2009-07-03 05:58:02

Not a bug - this is intended behavior -

Please close!

* On BF533/2/1:

* If we enter Hibernate the SCKE Pin is driven Low,

* so that the SDRAM enters Self Refresh Mode.

* However when the reset sequence that follows hibernate

* state is executed, SCKE is driven High, taking the

* SDRAM out of Self Refresh.

* If you reconfigure and access the SDRAM "very quickly",

* you are likely to avoid errors, otherwise the SDRAM

* start losing its contents.

* An external HW workaround is possible using logic gates.

* bfin_pm_valid - Tell the PM core that we only support the standby sleep

* state

* @state: suspend state we're checking.

static int bfin_pm_valid(suspend_state_t state)

{

return (state == PM_SUSPEND_STANDBY

#if !(defined(BF533_FAMILY) || defined(CONFIG_BF561))

* On BF533/2/1:

* If we enter Hibernate the SCKE Pin is driven Low,

* so that the SDRAM enters Self Refresh Mode.

* However when the reset sequence that follows hibernate

* state is executed, SCKE is driven High, taking the

* SDRAM out of Self Refresh.

* If you reconfigure and access the SDRAM "very quickly",

* you are likely to avoid errors, otherwise the SDRAM

* start losing its contents.

* An external HW workaround is possible using logic gates.

|| state == PM_SUSPEND_MEM

#endif

);

}

--- Vivi Li 2009-07-03 07:25:17

OK, close it.

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