Re: [PATCH v9 1/3] PCI: Add macro PCIE_PME_TO_L2_TIMEOUT_US
From: Manivannan Sadhasivam <mani@kernel.org>
Date: 2023-08-07 13:19:43
Also in:
imx, linux-devicetree, linux-pci, lkml
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@nxp.com>
With above changes, Acked-by: Manivannan Sadhasivam <mani@kernel.org> - Mani
quoted hunk ↗ jump to hunk
--- 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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