linux-kernel - Re: [PATCH v2 0/7] Add the iMX8MP PCIe support

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Date:   Fri, 08 Apr 2022 10:12:49 +0200
From:   Lucas Stach <l.stach@...gutronix.de>
To:     Hongxing Zhu <hongxing.zhu@....com>,
        "tharvey@...eworks.com" <tharvey@...eworks.com>,
        Alexander Stein <alexander.stein@...tq-group.com>
Cc:     Philipp Zabel <p.zabel@...gutronix.de>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Rob Herring <robh@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
        Vinod Koul <vkoul@...nel.org>,
        "linux-phy@...ts.infradead.org" <linux-phy@...ts.infradead.org>,
        Device Tree Mailing List <devicetree@...r.kernel.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        Linux ARM Mailing List <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH v2 0/7] Add the iMX8MP PCIe support

Am Freitag, dem 08.04.2022 um 03:14 +0000 schrieb Hongxing Zhu:
> > 
[...]
> > Richard,
> > 
> > Thanks for working on this!
> > 
> > Do you plan on submitting another version soon? I've tried to test this with an
> > imx8mp board I'm bringing up and while the host controller enumerates I fail
> > to get a link to a device. It's very likely I am missing something as this series
> > depends on the IMX8MP blk-ctrl and gpc series which I also can't cleanly apply.
> > Lucas just submitted a 'consolidated i.MX8MP HSIO/MEDIA/HDMI blk-ctrl
> > series' [1] yet I can't find a repo/branch that applies to either.
> > 
> > Perhaps you have a git repo somewhere I can look at while we wait for
> > imx8mp blk-ctl/gpc to settle and you to submit a v3?
> Hi Tim:
> Thanks for your kindly help to do the tests.
> I had listed the dependencies in the cover-letter log.
> Alexander and I used to test this series commits based on the V5.17 kernel.
> 
> Lucas had provided some review comments and suggestions about the PLL bits
>  manipulations of HSIOMIX in i.MX8MP PCIe PHY driver #3 of this series.
> And he suggested to let the HSIOMIX blk-ctrl make this PLL as a real clock,
>  and used by i.MX8MP PCIe PHY driver later.
> 
> Although I have some confusions, it's better let's wating for the blk-ctrl
> settle down and get clear discussion with Lucas later.
> How do you think about that?

Just to let you know my plans: I was quite busy with getting the
i.MX8MP HDMI part to work. Now that this is at least in a state where
it can collect some feedback from upstream I have some time to circle
back to this topic. I can't commit to do it immediately, but I'll get
around to looking at the PCIe series a bit more in-depth and apply my
HSIO PLL suggestion to the blk-ctrl driver during the next week.

Regards,
Lucas