Re: git: 28aaa58fa64e - main - fu740_pci_dw: Fix PERST delay and keep asserted for rest of reset sequence

In reply to: Jessica Clarke : "git: 28aaa58fa64e - main - fu740_pci_dw: Fix PERST delay and keep asserted for rest of reset sequence"
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From: Colin Percival <cperciva_at_tarsnap.com>
Date: Sun, 02 Jun 2024 21:01:47 UTC

On 6/2/24 13:43, Jessica Clarke wrote:
>      fu740_pci_dw: Fix PERST delay and keep asserted for rest of reset sequence
>      
>      DELAY takes microseconds not milliseconds, so 100 was too low. Moreover,
>      when enabling hw.pci.clear_pcib, PCI emeration would still stop at one
>      of the first bridges, but by asserting PERST for the rest of the reset
>      sequence that appears to be reliably addressed.

Does this need to be a DELAY as opposed to something asynchronous?  We try to
avoid lengthy DELAYs in the boot process.

-- 
Colin Percival
FreeBSD Release Engineering Lead & EC2 platform maintainer
Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid