There are two independent PCIe controllers in MT2712 and MT7622 platform.
Each of them should contain an independent MSI domain.
In old dts architecture, MSI domain will be inherited from the root
bridge, and all of the devices will share the same MSI domain.Hence that,
the PCIe devices will not work properly if the irq number which required
is more than 32.
Split the PCIe node for MT2712 and MT7622 platform to comply with
the hardware design and fix MSI issue.
change note:
v12:Add Reviwe by Rob. According to Bjorn's suggestion,
split the driver patch into three parts and rewrite
the commit logs, there is no code change
v11:Rebase for 5.14-rc1 and add "interrupt-names", "linux,pci-domain"
description in binding file. No code change.
v10:Rebase for 5.13-rc1, no code change.
v9:fix kernel-ci bot warning. In the scene of using new dts format,
when mtk_pcie_parse_port fails, of_node_put don't need to be called.
v8:remove slot node and fix yaml warning.
v7:dt-bindings file was modified as suggested by Rob, other file no
change.
v6:Fix yaml error. make sure driver compatible with old and
new DTS format.
v5:rebase for 5.9-rc1, no code change.
v4:change commit message due to bayes statistical bogofilter
considers this series patch SPAM.
v3:rebase for 5.8-rc1. Only collect ack of Ryder, No code change.
v2:change the allocation of MT2712 PCIe MMIO space due to the
allocation size is not right in v1.
Chuanjia Liu (6):
dt-bindings: PCI: mediatek: Update the Device tree bindings
PCI: mediatek: Add new method to get shared pcie-cfg base address
PCI: mediatek: Add new method to get irq number
PCI: mediatek: Get pci domain and decide how to parse node
arm64: dts: mediatek: Split PCIe node for MT2712 and MT7622
ARM: dts: mediatek: Update MT7629 PCIe node for new format
.../bindings/pci/mediatek-pcie-cfg.yaml | 39 ++++
.../devicetree/bindings/pci/mediatek-pcie.txt | 206 ++++++++++--------
arch/arm/boot/dts/mt7629-rfb.dts | 3 +-
arch/arm/boot/dts/mt7629.dtsi | 45 ++--
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 97 +++++----
.../dts/mediatek/mt7622-bananapi-bpi-r64.dts | 16 +-
arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts | 6 +-
arch/arm64/boot/dts/mediatek/mt7622.dtsi | 112 +++++-----
drivers/pci/controller/pcie-mediatek.c | 52 +++--
9 files changed, 330 insertions(+), 246 deletions(-)
create mode 100644 Documentation/devicetree/bindings/pci/mediatek-pcie-cfg.yaml
--
2.18.0
