layerscape: add patches-5.4

[openwrt/staging/wigyori.git] / target / linux / layerscape / patches-5.4 / 812-pcie-0005-MLK-20684-PCI-Disable-MSI-on-CYW4356-and-CYW4359-chi.patch

diff --git a/target/linux/layerscape/patches-5.4/812-pcie-0005-MLK-20684-PCI-Disable-MSI-on-CYW4356-and-CYW4359-chi.patch b/target/linux/layerscape/patches-5.4/812-pcie-0005-MLK-20684-PCI-Disable-MSI-on-CYW4356-and-CYW4359-chi.patch
new file mode 100644 (file)
index 0000000..dfda1aa
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/812-pcie-0005-MLK-20684-PCI-Disable-MSI-on-CYW4356-and-CYW4359-chi.patch
@@ -0,0 +1,30 @@
+From 852d91023cc24663e6b3b0707e98a189a7b1de87 Mon Sep 17 00:00:00 2001
+From: Andy Duan <fugang.duan@nxp.com>
+Date: Wed, 2 Jan 2019 17:55:44 +0800
+Subject: [PATCH] MLK-20684 PCI: Disable MSI on CYW4356 and CYW4359 chips
+
+MSI is broken on CYW4356/4359 chips. This causes CYW4356 1CX not
+work on i.MX8x platforms with bandwidth test. It is known issue
+that i.MX8x PCIe host driver MSI interrupt lost.
+
+Disable MSI completely for this chipset to let wifi can stable work
+until PCIe RC driver fix the issue.
+
+Reviewed-by: Richard Zhu <hongxing.zhu@nxp.com>
+Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
+(cherry picked from commit d99766187fb99d4a6655a1e0fdf5dc9451a8e4a0)
+---
+ drivers/pci/quirks.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/pci/quirks.c
++++ b/drivers/pci/quirks.c
+@@ -2444,6 +2444,8 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VI
+ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
+ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi);
+ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, 0x0761, quirk_disable_all_msi);
++DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x43ec, quirk_disable_all_msi);
++DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x43ef, quirk_disable_all_msi);
+ 
+ /* Disable MSI on chipsets that are known to not support it */
+ static void quirk_disable_msi(struct pci_dev *dev)