Re: [PATCH v2 15/15] PCI: j721e: add suspend and resume support

[Andy Shevchenko <andy.shevchenko@xxxxxxxxx>]

On Fri, Jan 26, 2024 at 4:38 PM Thomas Richard
<thomas.richard@xxxxxxxxxxx> wrote:
>
> From: Théo Lebrun <theo.lebrun@xxxxxxxxxxx>
>
> Add suspend and resume support. Only the rc mode is supported.
>
> During the suspend stage PERST# is asserted, then deasserted during the
> resume stage.

...

> +static int j721e_pcie_suspend_noirq(struct device *dev)
> +{
> +       struct j721e_pcie *pcie = dev_get_drvdata(dev);
> +
> +       if (pcie->mode == PCI_MODE_RC) {
> +               gpiod_set_value_cansleep(pcie->reset_gpio, 0);
> +               clk_disable_unprepare(pcie->refclk);

Same Q as in a few mails before: Do you need unprepare? What will be
the benefit from a PM perspective?

> +       }
> +
> +       cdns_pcie_disable_phy(pcie->cdns_pcie);
> +
> +       return 0;
> +}

-- 
With Best Regards,
Andy Shevchenko