diff mbox series

[v9,1/3] PCI: Add macro PCIE_PME_TO_L2_TIMEOUT_US

Message ID 20230804180637.462573-2-Frank.Li@nxp.com
State New
Headers
Series dwc general suspend/resume functionality |

Commit Message

Frank Li Aug. 4, 2023, 6:06 p.m. UTC 
  Introduces the PCIE_PME_TO_L2_TIMEOUT_US macro to facilitate checking the
PME (Power Management Event) timeout in the PCI subsystem.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
 drivers/pci/pci.h | 6 ++++++
 1 file changed, 6 insertions(+)

Comments

Manivannan Sadhasivam Aug. 7, 2023, 1:19 p.m. UTC | #1 
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

> ---
>  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
>
diff mbox series

Patch

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;