System clock systems to be twice as fast as RTC

[Grant Likely]

On Thu, Jun 11, 2009 at 9:13 AM, Subodh Nijsure<sunijsur at cisco.com> wrote:
>
>
> I am running system with kernel 2.6.10 with following cpuinfo

Wow, that's an old kernel version.  2.6.10 was released in 2004.  Can
you move up to something more recent?

g.

> sh-2.05b# cat /proc/cpuinfo
> processor       : 0
> cpu             : 440 in Virtex-5 FXT
> clock           : 200MHz
> revision        : 25.18 (pvr 7ff2 1912)
> bogomips        : 296.96
> machine         : Xilinx ML507 PPC440 evaluation board
> plb bus clock   : 100MHz
>
> The system clock seems to be running twice as as fast as RTC,
>
> sh-2.05b# date ; sleep 60 ; date
> Fri Sep 11 01:37:11 UTC 1970
> Fri Sep 11 01:37:41 UTC 1970
> sh-2.05b# date ; sleep 60 ; date
> Fri Sep 11 01:38:21 UTC 1970
> Fri Sep 11 01:38:51 UTC 1970
> sh-2.05b# date ; sleep 60 ; date
> Fri Sep 11 01:38:59 UTC 1970
> Fri Sep 11 01:39:29 UTC 1970
>
> I have tried various values of CONFIG_HZ and that didn't help. Google
> searches has shown up this issue on X86 system but not on PPC. Any hints as
> to what I should be looking for? I have included relevant portion of config
> file..
>
>
> /Subodh
>
>
>
> CONFIG_MMU=y
> CONFIG_GENERIC_HARDIRQS=y
> CONFIG_RWSEM_GENERIC_SPINLOCK=y
> CONFIG_ASM_SEMAPHORES=y
> CONFIG_HAVE_DEC_LOCK=y
> CONFIG_PPC=y
> CONFIG_PPC32=y
> CONFIG_GENERIC_NVRAM=y
> CONFIG_EXPERIMENTAL=y
> CONFIG_CLEAN_COMPILE=y
> CONFIG_BROKEN_ON_SMP=y
> CONFIG_LOCK_KERNEL=y
> CONFIG_LOCALVERSION=""
> CONFIG_SWAP=y
> CONFIG_SYSVIPC=y
> CONFIG_SYSVIPC_SEMMNI=128
> CONFIG_SYSVIPC_SEMMSL=250
> CONFIG_POSIX_MQUEUE=y
> CONFIG_SYSCTL=y
> CONFIG_LOG_BUF_SHIFT=14
> CONFIG_HOTPLUG=y
> CONFIG_KOBJECT_UEVENT=y
> CONFIG_IKCONFIG=y
> CONFIG_IKCONFIG_PROC=y
> CONFIG_KALLSYMS=y
> CONFIG_FUTEX=y
> CONFIG_EPOLL=y
> CONFIG_SHMEM=y
> CONFIG_CC_ALIGN_FUNCTIONS=0
> CONFIG_CC_ALIGN_LABELS=0
> CONFIG_CC_ALIGN_LOOPS=0
> CONFIG_CC_ALIGN_JUMPS=0
> CONFIG_LTT_MAX_HANDLES=128
> CONFIG_LOCKLESS=y
> CONFIG_BOOT_FLIGHT_BUFFERS=4
> CONFIG_BOOT_FLIGHT_SIZE=524288
> CONFIG_FLIGHT_PROC_BUFFERS=8
> CONFIG_FLIGHT_PROC_SIZE=8192
> CONFIG_NEWEV=y
> CONFIG_CSTM=y
> CONFIG_CREATE_DEV_CONSOLE=y
> CONFIG_MODULES=y
> CONFIG_MODULE_UNLOAD=y
> CONFIG_MODULE_FORCE_UNLOAD=y
> CONFIG_OBSOLETE_MODPARM=y
> CONFIG_KMOD=y
> CONFIG_44x=y
> CONFIG_BOOKE=y
> CONFIG_PTE_64BIT=y
> CONFIG_PHYS_64BIT=y
> CONFIG_MATH_EMULATION=y
> CONFIG_4xx=y
> CONFIG_XILINX_ML507=y
> CONFIG_XILINX_OCP=y
> CONFIG_XILINX_VIRTEX_5_FX=y
> CONFIG_XILINX_VIRTEX=y
> CONFIG_EMBEDDEDBOOT=y
> CONFIG_PPC_GEN550=y
> CONFIG_UART0_TTYS0=y
> CONFIG_NOT_COHERENT_CACHE=y
> CONFIG_PREEMPT_DESKTOP=y
> CONFIG_PREEMPT=y
> CONFIG_PREEMPT_BKL=y
> CONFIG_HIGH_RES_TIMERS=y
> CONFIG_BINFMT_ELF=y
> CONFIG_CMDLINE_BOOL=y
> CONFIG_CMDLINE="console=ttyS0,9600n8 initrd=0x1800000,32M rw root=/dev/ram
> ip=$(ipaddr)::(gatewayip):$(subnetmask)::eth0:none eth=$(ethaddr)"
> <snip>
>
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>
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>



-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.