From: Honghui Zhang <honghui.zh...@mediatek.com> MediaTek's PCIe host controller has two generation HWs, MT2712 and MT7622 using the new generation HW, which has two root ports. They share most probing flow with MT2701/MT7623. But the read/write config space logical is different. The per-port registers must be touched for read/write configuration space.
This patchset abstract the common probing flow, and add support for the new generation controller. Changes since v3: - Unify the macro define's names with PCIE_ prefix. - Use lower/upper_32_bits macro and remove AHB2PCIE_BASEL/AHB2PCIE_BASEH. - Factor out mtk_pcie_find_port to eliminate duplicate code. - Use list_for_each_entry instead of list_for_each_entry_safe when search list. - Simplify the mtk_pcie_hw_rd_cfg flow. - Split a new patch to rename the parameter and function names. - Update the subject and changelog to include specific SoC IDs. Changes since v2: - Split the Gen2 training change to a separate patch. - Simplify the config_read/write logical and get rid of mtk_pcie_find_port. - Using bus->sysdata to simplify the code. - Rebase to commit 65b83b13204a ("PCI: mediatek: Explicitly request exclusive reset control"). - Fix some misspells. - Add review tags in commit message. Changes since v1: - Fix build warnings in arm arch. - Using SoC specific compatible instead of generic compatible. - Add devicetree binding example for mt7622. - Unified the register define names with PCIE_ prefix. - Cleanup some un-necessary condition determine when starup port. - minor code cleanups.  https://patchwork.kernel.org/patch/9852591/ Honghui Zhang (2): PCI: mediatek: make the parameter and function names more accurate PCI: mediatek: Add a structure to abstract the controller generations Ryder Lee (5): PCI: mediatek: Using readl_poll_timeout to wait Gen2 training PCI: mediatek: switch to use platform_get_resource_byname() dt-bindings: PCI: rename and cleanup MediaTek binding text PCI: mediatek: Add controller support for mt2712 and mt7622 dt-bindings: PCI: add support for mt2712 and mt7622 .../bindings/pci/mediatek,mt7623-pcie.txt | 130 ----- .../devicetree/bindings/pci/mediatek-pcie.txt | 284 ++++++++++ drivers/pci/host/Kconfig | 5 +- drivers/pci/host/pcie-mediatek.c | 598 ++++++++++++++++++--- 4 files changed, 820 insertions(+), 197 deletions(-) delete mode 100644 Documentation/devicetree/bindings/pci/mediatek,mt7623-pcie.txt create mode 100644 Documentation/devicetree/bindings/pci/mediatek-pcie.txt -- 2.6.4