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SubjectRE: [PATCH v3 9/9] PCI: imx: add the imx8mm pcie support
Date

> -----Original Message-----
> From: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
> Sent: Wednesday, October 13, 2021 8:46 PM
> To: Richard Zhu <hongxing.zhu@nxp.com>
> Cc: linux-phy@lists.infradead.org; devicetree@vger.kernel.org;
> linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org;
> kernel@pengutronix.de; dl-linux-imx <linux-imx@nxp.com>;
> l.stach@pengutronix.de; tharvey@gateworks.com; kishon@ti.com;
> vkoul@kernel.org; robh@kernel.org; galak@kernel.crashing.org;
> shawnguo@kernel.org
> Subject: Re: [PATCH v3 9/9] PCI: imx: add the imx8mm pcie support
>
> On Tue, 2021-10-12 at 16:41 +0800, Richard Zhu wrote:
> > i.MX8MM PCIe works mostly like the i.MX8MQ one, but has a different
> > PHY and allows to output the internal PHY reference clock via the refclk
> pad.
> > Add the i.MX8MM PCIe support based on the standalone PHY driver.
> >
> > Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
> > ---
> > [...]
> > @@ -1130,6 +1176,14 @@ static int imx6_pcie_probe(struct
> platform_device *pdev)
> > &imx6_pcie->tx_swing_low))
> > imx6_pcie->tx_swing_low = 127;
> >
> > + /* get PHY refclk pad mode if there is PHY node */
> > + phy_node = of_parse_phandle(node, "phys", 0);
> > + if (phy_node) {
> > + of_property_read_u32(phy_node, "fsl,refclk-pad-mode",
> > + &imx6_pcie->refclk_pad_mode);
>
> It seems to me that the refclk_pad_mode is not actually used by this driver
> anymore, because it is handled by the PHY driver now. Is there a reason to
> read this property here at all?
>
[Richard Zhu] Good caught. I forgot to clean up the refclk_pad_mode in controller driver.
Would remove these codes later. Thanks a lot.

Best Regards
Richard Zhu


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