linux-kernel - Re: [PATCH v4 0/4] Split PCIe node to comply with hardware design

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Message-ID: <1596440772.7361.35.camel@mhfsdcap03>
Date:   Mon, 3 Aug 2020 15:46:12 +0800
From:   Chuanjia Liu <Chuanjia.Liu@...iatek.com>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>
CC:     Rob Herring <robh+dt@...nel.org>,
        Ryder Lee <ryder.lee@...iatek.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        <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>, <yong.wu@...iatek.com>,
        <jianjun.wang@...iatek.com>
Subject: Re: [PATCH v4 0/4] Split PCIe node to comply with hardware design

On Tue, 2020-07-21 at 15:49 +0800, chuanjia.liu wrote:
> There are two independent PCIe controllers in MT2712 and 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 and MT7622 platform to fix MSI
> issue and comply with the hardware design.


Hi Lorenzo,

       gentle ping for this patchset.


       BTW. I don't see it in [1],but is ok in [2], I don't know why.

[1]https://lore.kernel.org/linux-pci/
[2]https://lore.kernel.org/linux-arm-kernel/20200721074915.14516-1-Chuanjia.Liu@mediatek.com/

Best Regards,
Chuanjia

> 
> change note:
>   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 (4):
>   dt-bindings: pci: mediatek: Modified the Device tree bindings
>   PCI: mediatek: Use regmap to get shared pcie-cfg base
>   arm64: dts: mediatek: Split PCIe node for MT2712 and MT7622
>   ARM: dts: mediatek: Modified 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 .../bindings/pci/mediatek-pcie-cfg.yaml
>