diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/812-pcie-0005-MLK-20684-PCI-Disable-MSI-on-CYW4356-and-CYW4359-chi.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/812-pcie-0005-MLK-20684-PCI-Disable-MSI-on-CYW4356-and-CYW4359-chi.patch | 30 |
1 files changed, 30 insertions, 0 deletions
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 index 0000000000..dfda1aa98b --- /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) |