Re: [RFC] MPC5200 Kernel/UBoot PCI problem
From: Sylvain Munaut <hidden>
Date: 2005-03-25 14:00:19
From: Sylvain Munaut <hidden>
Date: 2005-03-25 14:00:19
Hi Andrey, Andrey Volkov wrote:
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Try adding some delays in the pci configuration zone access routines in mpc52xx_pci.c I remember someone needed those but still don't know why, the manual don't say anything about that.Board started, after I add udelay(7) in read/write config. Really strange.Sylvain, answer was in PCI2.2 specification, not in manual.
Indeed good catch ! Never imagined the delay was so long. It should be possible to use the sched_clock(void) to know if we're booting since long enough, because just waiting 1 full second is ... long. Sylvain