On 12/03/2015 05:56 PM, Wang Huan-B18965 wrote: >> 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? > [Alison Wang] I think as Alexander set the watchdog to 1s timeout, so the > trigger occurs at that time. >> How long does it take to load the file? > [Alison Wang] About 2s. >> Is SPI running at reasonable speed? > [Alison Wang] Yes. >> Is there other similar situations such as loading large file off NOR >> flash? > [Alison Wang] If we don't set the watchdog to 1s timeout, both loading > Large file to serial flash or NOR flash, there is not such situation. > If we set the watchdog to 1s timeout, I think there are both such > situation. > > Alexander, do you agree with my answer? Please give your comments too. :) >
If an external watchdog is used, any long operation may trigger it. Jagan, If you are OK with it, I can bring this patch in. York _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
