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Commit 597a37d0 authored by Kishon Vijay Abraham I's avatar Kishon Vijay Abraham I Committed by Greg Kroah-Hartman
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PCI: keystone: Use quirk to limit MRRS for K2G 



[ Upstream commit 148e340c0696369fadbbddc8f4bef801ed247d71 ]

PCI controller in K2G also has a limitation that memory read request
size (MRRS) must not exceed 256 bytes. Use the quirk to limit MRRS
(added for K2HK, K2L and K2E) for K2G as well.

Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent c0418c4a

drivers/pci/controller/dwc/pci-keystone.c

+3 −0
Original line number Diff line number Diff line
@@ -36,6 +36,7 @@ 
#define PCIE_RC_K2HK		0xb008

#define PCIE_RC_K2E		0xb009

#define PCIE_RC_K2L		0xb00a

#define PCIE_RC_K2G		0xb00b



#define to_keystone_pcie(x)	dev_get_drvdata((x)->dev)
@@ -50,6 +51,8 @@ static void quirk_limit_mrrs(struct pci_dev *dev) 
		 .class = PCI_CLASS_BRIDGE_PCI << 8, .class_mask = ~0, },

		{ PCI_DEVICE(PCI_VENDOR_ID_TI, PCIE_RC_K2L),

		 .class = PCI_CLASS_BRIDGE_PCI << 8, .class_mask = ~0, },

		{ PCI_DEVICE(PCI_VENDOR_ID_TI, PCIE_RC_K2G),

		 .class = PCI_CLASS_BRIDGE_PCI << 8, .class_mask = ~0, },

		{ 0, },

	};