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

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Date: Tue,  2 Jan 2024 19:27:00 +0200
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: Gustavo Pimentel <Gustavo.Pimentel@...opsys.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: [PATCH 1/1] PCI: 64GT/s uses 1b/1b encoding

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>
---
 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