linux-kernel - Re: [PATCH] PCI: dwc/meson: do not fail on wait linkup timeout

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Message-ID: <CAL_JsqKxLxijhcG7SHEqfA3j6xM6cJpv-3fT2r1Nysst_8ireg@mail.gmail.com>
Date:   Thu, 19 Nov 2020 08:17:26 -0600
From:   Rob Herring <robh@...nel.org>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Cc:     Neil Armstrong <narmstrong@...libre.com>,
        Yue Wang <yue.wang@...ogic.com>,
        PCI <linux-pci@...r.kernel.org>,
        "open list:ARM/Amlogic Meson..." <linux-amlogic@...ts.infradead.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] PCI: dwc/meson: do not fail on wait linkup timeout

On Thu, Nov 19, 2020 at 5:12 AM Lorenzo Pieralisi
<lorenzo.pieralisi@....com> wrote:
>
> On Tue, Sep 22, 2020 at 11:30:30AM -0600, Rob Herring wrote:
> > On Mon, Sep 21, 2020 at 1:50 AM Neil Armstrong <narmstrong@...libre.com> wrote:
> > >
> > > When establish link timeouts, probe fails but the error is unrelated since
> > > the PCIe controller has been probed succesfully.
> > >
> > > Align with most of the other dw-pcie drivers and ignore return of
> > > dw_pcie_wait_for_link() in the host_init callback.
> >
> > I think all, not most DWC drivers should be aligned. Plus the code
> > here is pretty much the same, so I'm working on moving all this to the
> > common DWC code. Drivers that need to bring up the link will need to
> > implement .start_link() (currently only used for EP mode). Most of the
> > time that is just setting the LTSSM bit which Synopsys thought letting
> > every vendor do their own register for was a good idea. Sigh.
>
> Should I drop this patch then ?

Yes, this is done by my series.

Rob