Re: [PATCH v21 12/16] PCI: add T_PVPERL macro

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On Fri, Sep 22, 2023 at 03:53:27PM +0900, Yoshihiro Shimoda wrote:
> According to the PCI Express Card Electromechanical Specification,
> Power stable to PERST# inactive interval is 100 ms as minimum.
> So, add the macro to use PCIe controller drivers.
> 

"Add a macro so that the PCIe controller drivers can make use of it."

> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>

- Mani

> ---
>  drivers/pci/pci.h | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
> index 39a8932dc340..5ecbcf041179 100644
> --- a/drivers/pci/pci.h
> +++ b/drivers/pci/pci.h
> @@ -13,6 +13,9 @@
>  
>  #define PCIE_LINK_RETRAIN_TIMEOUT_MS	1000
>  
> +/* Power stable to PERST# inactive from PCIe card Electromechanical Spec */
> +#define PCIE_T_PVPERL_MS		100
> +
>  /*
>   * PCIe r6.0, sec 5.3.3.2.1 <PME Synchronization>
>   * Recommends 1ms to 10ms timeout to check L2 ready.
> -- 
> 2.25.1
> 

-- 
மணிவண்ணன் சதாசிவம்




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