linux-kernel - Re: [PATCH] link up validation moved to pcie-designware

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Message-ID: <3127323.7iUuBrk8dh@wuerfel>
Date:	Tue, 09 Feb 2016 16:28:38 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Joao Pinto <Joao.Pinto@...opsys.com>
Cc:	Bjorn Helgaas <helgaas@...nel.org>, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, CARLOS.PALMINHA@...opsys.com
Subject: Re: [PATCH] link up validation moved to pcie-designware

On Monday 08 February 2016 16:48:07 Joao Pinto wrote:
> On 2/8/2016 4:46 PM, Arnd Bergmann wrote:
> > On Monday 08 February 2016 16:43:33 Joao Pinto wrote:
> >> Hi,
> >> Ok, so what should be the retries and waiting time in your opinion?
> >> The most typical is:
> >>
> >> retries: 10
> >> delay: 100ms (usleep_range (90000, 100000))
> >>
> >> These values should be ok?
> >>
> >> I am already testing a full pcie-designware platform driver.
> >>
> >>
> > You are the one with the datasheet, not me. 
> 
> Our reference driver follows the 10x with 100ms delay between retries, so lets
> follow that value. Agree?
> 

I wouldn't trust the reference driver too much, better follow whatever
the hardware specifications says.

	Arnd