From: Andrey Volkov <avolkov@varma-el•com>
To: roman.kuzmenko@auriga•ru
Cc: Linuxppc-embedded <Linuxppc-embedded@ozlabs•org>
Subject: Re: MPC5200, PCI, udelay(10)
Date: Fri, 20 Jan 2006 20:24:58 +0300 [thread overview]
Message-ID: <43D11CEA.7040104@varma-el.com> (raw)
In-Reply-To: <1137745904.4631.17.camel@trust.auriga.ru>
Roman Kuzmenko wrote:
> Hello.
>
> Please, help me to investigate why the delays present in the
> "mpc5xxx_read_config_dword" and "mpc5xxx_write_config_dword" functions
> in the "arch/ppc/kernel/mpc52xx_pci.c" file.
>
> I.e.
> ==========================
> *(volatile u32 *)MPC5xxx_PCI_CAR = 0;
>> udelay(10);
> return 0;
> ==========================
>
> I was neither able to find any reference at the MPC5200 documentation
> supplied by FreeScale nor reproduce any error with these lines got
> removed.
>
> Thank you.
>
kernel version?
--
Regards
Andrey Volkov
next prev parent reply other threads:[~2006-01-20 17:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-20 8:31 MPC5200, PCI, udelay(10) Roman Kuzmenko
2006-01-20 17:24 ` Andrey Volkov [this message]
2006-02-04 10:51 ` Sylvain Munaut
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