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PCI: mediatek: Add new generation controller support

From:  Jianjun Wang <jianjun.wang-AT-mediatek.com>
To:  Bjorn Helgaas <bhelgaas-AT-google.com>, Rob Herring <robh+dt-AT-kernel.org>, maz-AT-kernel.org, Lorenzo Pieralisi <lorenzo.pieralisi-AT-arm.com>, Ryder Lee <ryder.lee-AT-mediatek.com>
Subject:  [v7,0/7] PCI: mediatek: Add new generation controller support
Date:  Wed, 13 Jan 2021 19:39:54 +0800
Message-ID:  <20210113114001.5804-1-jianjun.wang@mediatek.com>
Cc:  Philipp Zabel <p.zabel-AT-pengutronix.de>, Matthias Brugger <matthias.bgg-AT-gmail.com>, linux-pci-AT-vger.kernel.org, linux-mediatek-AT-lists.infradead.org, devicetree-AT-vger.kernel.org, linux-kernel-AT-vger.kernel.org, linux-arm-kernel-AT-lists.infradead.org, Sj Huang <sj.huang-AT-mediatek.com>, Jianjun Wang <jianjun.wang-AT-mediatek.com>, youlin.pei-AT-mediatek.com, chuanjia.liu-AT-mediatek.com, qizhong.cheng-AT-mediatek.com, sin_jieyang-AT-mediatek.com, drinkcat-AT-chromium.org, Rex-BC.Chen-AT-mediatek.com, anson.chuang-AT-mediatek.com
Archive-link:  Article

These series patches add pcie-mediatek-gen3.c and dt-bindings file to
support new generation PCIe controller.

Changes in v7:
1. Split the driver patch to core PCIe, INTx, MSI and PM patches;
2. Reshape MSI init and handle flow, use msi_bottom_domain to cover all sets;
3. Replace readl/writel with their relaxed version;
4. Add MSI description in binding document;
5. Add pl_250m clock in binding document.

Changes in v6:
1. Export pci_pio_to_address() to support compiling as kernel module;
2. Replace usleep_range(100 * 1000, 120 * 1000) with msleep(100);
3. Replace dev_notice with dev_err;
4. Fix MSI get hwirq flow;
5. Fix warning for possible recursive locking in mtk_pcie_set_affinity.

Changes in v5:
1. Remove unused macros
2. Modify the config read/write callbacks, set the config byte field
   in TLP header and use pci_generic_config_read32/write32
   to access the config space
3. Fix the settings of translation window, both MEM and IO regions
   works properly
4. Fix typos

Changes in v4:
1. Fix PCIe power up/down flow
2. Use "mac" and "phy" for reset names
3. Add clock names
4. Fix the variables type

Changes in v3:
1. Remove standard property in binding document
2. Return error number when get_optional* API throws an error
3. Use the bulk clk APIs

Changes in v2:
1. Fix the typo of dt-bindings patch
2. Remove the unnecessary properties in binding document
3. dispos the irq mappings of msi top domain when irq teardown


Jianjun Wang (7):
  dt-bindings: PCI: mediatek-gen3: Add YAML schema
  PCI: Export pci_pio_to_address() for module use
  PCI: mediatek-gen3: Add MediaTek Gen3 driver for MT8192
  PCI: mediatek-gen3: Add INTx support
  PCI: mediatek-gen3: Add MSI support
  PCI: mediatek-gen3: Add system PM support
  MAINTAINERS: Add Jianjun Wang as MediaTek PCI co-maintainer

 .../bindings/pci/mediatek-pcie-gen3.yaml      | 172 ++++
 MAINTAINERS                                   |   1 +
 drivers/pci/controller/Kconfig                |  13 +
 drivers/pci/controller/Makefile               |   1 +
 drivers/pci/controller/pcie-mediatek-gen3.c   | 965 ++++++++++++++++++
 drivers/pci/pci.c                             |   1 +
 6 files changed, 1153 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
 create mode 100644 drivers/pci/controller/pcie-mediatek-gen3.c

-- 
2.25.1



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