linux-kernel - Re: [PATCH 1/1] PCI: 64GT/s uses 1b/1b encoding

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Date: Tue, 2 Jan 2024 12:14:15 -0600
From: Bjorn Helgaas <helgaas@...nel.org>
To: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc: Gustavo Pimentel <Gustavo.Pimentel@...opsys.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] PCI: 64GT/s uses 1b/1b encoding

On Tue, Jan 02, 2024 at 07:27:00PM +0200, Ilpo Järvinen wrote:
> PCIe 64GT/s Data Rate uses 1b/1b encoding, not 128b/130b (PCIe r6.1 sec
> 1.2, Table 1-1).
> 
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>

Applied to pci/enumeration for v6.8, thanks!

> ---
>  drivers/pci/pci.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
> index 5ecbcf041179..d9132029d658 100644
> --- a/drivers/pci/pci.h
> +++ b/drivers/pci/pci.h
> @@ -272,7 +272,7 @@ void pci_bus_put(struct pci_bus *bus);
>  
>  /* PCIe speed to Mb/s reduced by encoding overhead */
>  #define PCIE_SPEED2MBS_ENC(speed) \
> -	((speed) == PCIE_SPEED_64_0GT ? 64000*128/130 : \
> +	((speed) == PCIE_SPEED_64_0GT ? 64000*1/1 : \
>  	 (speed) == PCIE_SPEED_32_0GT ? 32000*128/130 : \
>  	 (speed) == PCIE_SPEED_16_0GT ? 16000*128/130 : \
>  	 (speed) == PCIE_SPEED_8_0GT  ?  8000*128/130 : \
> -- 
> 2.39.2
>