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Message-ID: <20230807131918.GC18257@thinkpad>
Date: Mon, 7 Aug 2023 18:49:18 +0530
From: Manivannan Sadhasivam <mani@...nel.org>
To: Frank Li <Frank.Li@....com>
Cc: helgaas@...nel.org, bhelgaas@...gle.com,
devicetree@...r.kernel.org, gustavo.pimentel@...opsys.com,
imx@...ts.linux.dev, kw@...ux.com, leoyang.li@....com,
linux-arm-kernel@...ts.infradead.org, linux-imx@....com,
linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
lorenzo.pieralisi@....com, lpieralisi@...nel.org,
manivannan.sadhasivam@...aro.org, minghuan.lian@....com,
mingkai.hu@....com, robh+dt@...nel.org, roy.zang@....com,
shawnguo@...nel.org, zhiqiang.hou@....com
Subject: Re: [PATCH v9 1/3] PCI: Add macro PCIE_PME_TO_L2_TIMEOUT_US
On Fri, Aug 04, 2023 at 02:06:35PM -0400, Frank Li wrote:
> Introduces the PCIE_PME_TO_L2_TIMEOUT_US macro to facilitate checking the
s/Introduces/Introduce
> PME (Power Management Event) timeout in the PCI subsystem.
>
L2 ready timeout
> Signed-off-by: Frank Li <Frank.Li@....com>
With above changes,
Acked-by: Manivannan Sadhasivam <mani@...nel.org>
- Mani
> ---
> drivers/pci/pci.h | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
> index a4c3974340576..da8156663c825 100644
> --- a/drivers/pci/pci.h
> +++ b/drivers/pci/pci.h
> @@ -13,6 +13,12 @@
>
> #define PCIE_LINK_RETRAIN_TIMEOUT_MS 1000
>
> +/*
> + * PCIe r6.0, sec 5.3.3.2.1 <PME Synchronization>
> + * Recommends 1ms to 10ms timeout to check L2 ready.
> + */
> +#define PCIE_PME_TO_L2_TIMEOUT_US 10000
> +
> extern const unsigned char pcie_link_speed[];
> extern bool pci_early_dump;
>
> --
> 2.34.1
>
--
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