[PATCH AUTOSEL 4.14 145/150] PCI: keystone: Use quirk to limit MRRS for K2G

Sasha Levin
2019-11-16T15:51:14Z

From: Kishon Vijay Abraham I <kishon@ti.com>

[ 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: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pci/dwc/pci-keystone.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/pci/dwc/pci-keystone.c b/drivers/pci/dwc/pci-keystone.c
index 9bc52e4cf52a0..3ea8288c16053 100644
--- a/drivers/pci/dwc/pci-keystone.c
+++ b/drivers/pci/dwc/pci-keystone.c
@@ -39,6 +39,7 @@
#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)

@@ -53,6 +54,8 @@ 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, },
};

--
2.20.1