* [PATCH AUTOSEL 4.9 96/99] PCI: keystone: Use quirk to limit MRRS for K2G
[not found] <20191116155103.10971-1-sashal@kernel.org>
@ 2019-11-16 15:50 ` Sasha Levin
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From: Sasha Levin @ 2019-11-16 15:50 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Kishon Vijay Abraham I, Lorenzo Pieralisi, Sasha Levin, linux-pci
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/host/pci-keystone.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/pci/host/pci-keystone.c b/drivers/pci/host/pci-keystone.c
index eac0a1238e9d0..c690299d5c4a8 100644
--- a/drivers/pci/host/pci-keystone.c
+++ b/drivers/pci/host/pci-keystone.c
@@ -43,6 +43,7 @@
#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) container_of(x, struct keystone_pcie, pp)
@@ -57,6 +58,8 @@ 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
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2019-11-16 15:50 ` [PATCH AUTOSEL 4.9 96/99] PCI: keystone: Use quirk to limit MRRS for K2G Sasha Levin
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