pq2_find_bridges hangs system

[Alex BASTOS]

Vitaly,

It didn't work. So I will check pq2ads_setup_pci to check if
some board specific issue is affected.

I will say you if I find anything

Thanks

Alex.

Citando Vitaly Bordug <vbordug at ru.mvista.com>:

> Alex,
> please probe this. If it will not help, pq2ads_setup_pci should be digged for
> some board specifics.
>
> Also, check if hose->set_cfg_type is 1 as done for ads8272.
>
> -------- Original Message --------
> Subject: [patch 01/34] ppc32: Fix incorrect PCI frequency value
> Date: Thu, 01 Dec 2005 00:51:15 -0800
> From: akpm at osdl.org
> To: torvalds at osdl.org
> CC: akpm at osdl.org, vbordug at ru.mvista.com, galak at kernel.crashing.org
>
>
> From: Vitaly Bordug <vbordug at ru.mvista.com>
>
> The time to wait after deasserting PCI_RST has been counted with incorrect
> value - this patch fixes the issue.
>
> Signed-off-by: Vitaly Bordug <vbordug at ru.mvista.com>
> Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
> Signed-off-by: Andrew Morton <akpm at osdl.org>
> ---
>
>  arch/ppc/syslib/m82xx_pci.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletion(-)
>
> diff -puN arch/ppc/syslib/m82xx_pci.c~ppc32-fix-incorrect-pci-frequency-value
> arch/ppc/syslib/m82xx_pci.c
> ---
>
devel/arch/ppc/syslib/m82xx_pci.c~ppc32-fix-incorrect-pci-frequency-value	2005-11-30
> 23:58:00.000000000 -0800
> +++ devel-akpm/arch/ppc/syslib/m82xx_pci.c	2005-11-30 23:58:00.000000000
> -0800
> @@ -248,7 +248,8 @@ pq2ads_setup_pci(struct pci_controller *
>  	pci_div = ( (sccr & SCCR_PCI_MODCK) ? 2 : 1) *
>  			( ( (sccr & SCCR_PCIDF_MSK) >> SCCR_PCIDF_SHIFT) + 1);
>  	freq = (uint)((2*binfo->bi_cpmfreq)/(pci_div));
> -	time = (int)666666/freq;
> +	time = (int)66666666/freq;
> +
>  	/* due to PCI Local Bus spec, some devices needs to wait such a long
>  	time after RST 	deassertion. More specifically, 0.508s for 66MHz & twice
> more for 33 */
>  	printk("%s: The PCI bus is %d Mhz.\nWaiting %s after deasserting
> RST...\n",__FILE__,freq,
> _
>
>
>
> --
> Sincerely,
> Vitaly
>