[U-Boot] [PATCH 1/1] fsl_qspi: Pet the watchdog while reading/writing

[York Sun <yorksun@freescale.com>]

On 12/03/2015 01:49 AM, Wang Huan-B18965 wrote:

<snip>

>>
>> The actual command which results in a watchdog reset is 'sf read
>> 0x81040000 0x200000 0x400000'. Please note that this uses an external
>> watchdog which is enabled by default and resets after ~1.5s. The command
>> itself takes about 2s (taken from my watch).
>>
> [Alison Wang] I could not reproduce the issue. Maybe I don't have the
> external watchdog which will reset after ~1.5s as Alexander mentioned.
> 
> U-Boot 2015.10-00273-g7ee52af (Dec 03 2015 - 17:32:24 +0800)
> 
> CPU:   Freescale LayerScape LS1021E, Version: 2.0, (0x87081120)
> Clock Configuration:
>        CPU0(ARMV7):1000 MHz,
>        Bus:300  MHz, DDR:800  MHz (1600 MT/s data rate),
> Reset Configuration Word (RCW):
>        00000000: 0608000a 00000000 00000000 00000000
>        00000010: 30000000 00007900 40025a00 21046000
>        00000020: 00000000 00000000 00000000 20000000
>        00000030: 20024800 881b7540 00000000 00000000
> Model: LS1021A TWR Board
> Board: LS1021ATWR
> I2C:   ready
> DRAM:  1 GiB
> Using SERDES1 Protocol: 48 (0x30)
> MMC:   FSL_SDHC: 0
> SF: Detected N25Q128 with page size 256 Bytes, erase size 64 KiB, total 16 MiB
> EEPROM: NXID v1
> PCIe1: Root Complex no link, regs @ 0x3400000
> PCIe2: disabled
> In:    serial
> Out:   serial
> Err:   serial
> SEC: RNG instantiated
> SATA link 0 timeout.
> AHCI 0001.0300 1 slots 1 ports ? Gbps 0x1 impl SATA mode
> flags: 64bit ncq pm clo only pmp fbss pio slum part ccc
> Found 0 device(s).
> SCSI:  Net:   eTSEC1 is in sgmii mode.
> eTSEC2 is in sgmii mode.
> eTSEC1, eTSEC2, eTSEC3 [PRIME]
> => => sf probe
> SF: Detected N25Q128 with page size 256 Bytes, erase size 64 KiB, total 16 MiB
> => sf read 0x81040000 0x200000 0x400000
> device 0 offset 0x200000, size 0x400000
> SF: 4194304 bytes @ 0x200000 Read: OK
> =>

Alison and Alexander,

My concerns are

Is the watchdog triggered reasonably?
How long does it take to load the file?
Is SPI running at reasonable speed?
Is there other similar situations such as loading large file off NOR flash?


York