> -----Original Message-----
> From: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> Sent: 2022年3月16日 17:38
> To: Hongxing Zhu <hongxing.zhu@xxxxxxx>; bhelgaas@xxxxxxxxxx;
> lorenzo.pieralisi@xxxxxxx
> Cc: linux-pci@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx;
> linux-kernel@xxxxxxxxxxxxxxx; kernel@xxxxxxxxxxxxxx; dl-linux-imx
> <linux-imx@xxxxxxx>
> Subject: Re: [PATCH] PCI: imx6: Invoke the PHY exit function after PHY power
> off
>
> Am Donnerstag, dem 03.03.2022 um 14:34 +0800 schrieb Richard Zhu:
> > To balance phy->init_count, invoke the phy_exit() after phy_power_off().
> >
> This looks okay as a fix, but overall I don't like that we need to have special PHY
> handling in the suspend path and PHY init hidden in
> imx6_pcie_assert_core_reset() in the resume path. Maybe we can make this
> PHY handling a bit more obvious by splitting it out of the core reset sequence. I
> don't see the full implications of such a change yet, but I think we should at
> least give it a try.
>
> For now, this patch is:
> Reviewed-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Hi Lucas:
Thanks for your review comment.
Agree with you, the PHY handling shouldn't be include in the reset function.
I would plan to refine the PHY handling after this fix.
Best Regards
Richard Zhu
>
> > Fixes: 178e244cb6e2 ("PCI: imx: Add the imx8mm pcie support")
> > Signed-off-by: Richard Zhu <hongxing.zhu@xxxxxxx>
> > ---
> > drivers/pci/controller/dwc/pci-imx6.c | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/pci/controller/dwc/pci-imx6.c
> > b/drivers/pci/controller/dwc/pci-imx6.c
> > index 331490614d55..343fe1429e3c 100644
> > --- a/drivers/pci/controller/dwc/pci-imx6.c
> > +++ b/drivers/pci/controller/dwc/pci-imx6.c
> > @@ -973,6 +973,7 @@ static int imx6_pcie_suspend_noirq(struct device
> *dev)
> > case IMX8MM:
> > if (phy_power_off(imx6_pcie->phy))
> > dev_err(dev, "unable to power off PHY\n");
> > + phy_exit(imx6_pcie->phy);
> > break;
> > default:
> > break;
>
