linux-kernel - [PATCH v2 0/4] Spilt PCIe node to comply with hardware design

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Date:   Thu, 28 May 2020 14:16:44 +0800
From:   <chuanjia.liu@...iatek.com>
To:     <robh+dt@...nel.org>, <ryder.lee@...iatek.com>,
        <matthias.bgg@...il.com>
CC:     <lorenzo.pieralisi@....com>, <amurray@...goodpenguin.co.uk>,
        <linux-pci@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <bhelgaas@...gle.com>,
        <chuanjia.liu@...iatek.com>, <jianjun.wang@...iatek.com>,
        <yong.wu@...iatek.com>, <srv_heupstream@...iatek.com>
Subject: [PATCH v2 0/4] Spilt PCIe node to comply with hardware design

There are two independent PCIe controllers in MT2712/MT7622 platform,
and each of them should contain an independent MSI domain.

In current 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/MT7622 platform to fix MSI issue and
comply with the hardware design.

change note:
v2: change the allocation of mt2712 PCIe MMIO space due to the allcation
size is not right in v1.

chuanjia.liu (4):
  dt-bindings: PCI: Mediatek: Update PCIe binding
  PCI: mediatek: Use regmap to get shared pcie-cfg base
  arm64: dts: mediatek: Split PCIe node for MT2712/MT7622
  ARM: dts: mediatek: Update mt7629 PCIe node

 .../bindings/pci/mediatek-pcie-cfg.yaml       |  38 +++++
 .../devicetree/bindings/pci/mediatek-pcie.txt | 144 +++++++++++-------
 arch/arm/boot/dts/mt7629-rfb.dts              |   3 +-
 arch/arm/boot/dts/mt7629.dtsi                 |  23 +--
 arch/arm64/boot/dts/mediatek/mt2712e.dtsi     |  75 +++++----
 .../dts/mediatek/mt7622-bananapi-bpi-r64.dts  |  16 +-
 arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts  |   6 +-
 arch/arm64/boot/dts/mediatek/mt7622.dtsi      |  68 ++++++---
 drivers/pci/controller/pcie-mediatek.c        |  25 ++-
 9 files changed, 258 insertions(+), 140 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/pci/mediatek-pcie-cfg.yaml

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2.18.0