linux-kernel - Re: [PATCH v2 2/5] PCI: imx6: Don't poll LTSSM state of i.MX7D PCIe in PM operations

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Message-ID: <aFMGokOMOQsj7FtY@lizhi-Precision-Tower-5810>
Date: Wed, 18 Jun 2025 14:34:10 -0400
From: Frank Li <Frank.li@....com>
To: Richard Zhu <hongxing.zhu@....com>
Cc: l.stach@...gutronix.de, lpieralisi@...nel.org, kwilczynski@...nel.org,
	mani@...nel.org, robh@...nel.org, bhelgaas@...gle.com,
	shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
	festevam@...il.com, linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, imx@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/5] PCI: imx6: Don't poll LTSSM state of i.MX7D PCIe
 in PM operations

On Wed, Jun 18, 2025 at 10:41:13AM +0800, Richard Zhu wrote:
> Add a quirk flag(QUIRK_NOL2POLL_IN_PM) for i.MX7D PCIe. Don't poll the
> LTSSM states after issuing the PME_Turn_Off message.

s/issuing/issue

>
> Signed-off-by: Richard Zhu <hongxing.zhu@....com>
> ---

This patch should after

PCI: dwc: Don't poll L2 if QUIRK_NOL2POLL_IN_PM is existing in suspend

Frank
>  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 8b7daaf36fef..f084a9ad1001 100644
> --- a/drivers/pci/controller/dwc/pci-imx6.c
> +++ b/drivers/pci/controller/dwc/pci-imx6.c
> @@ -1851,6 +1851,7 @@ static const struct imx_pcie_drvdata drvdata[] = {
>  		.mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
>  		.enable_ref_clk = imx7d_pcie_enable_ref_clk,
>  		.core_reset = imx7d_pcie_core_reset,
> +		.quirk = QUIRK_NOL2POLL_IN_PM,
>  	},
>  	[IMX8MQ] = {
>  		.variant = IMX8MQ,
> --
> 2.37.1
>