This patchset is a third one in the series created in the framework of my Baikal-T1 PCIe/eDMA-related work: [1: In-progress v4] PCI: dwc: Various fixes and cleanups Link: https://lore.kernel.org/linux-pci/20220610082535.12802-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx/ [2: In-progress v3] PCI: dwc: Add hw version and dma-ranges support Link: https://lore.kernel.org/linux-pci/20220610084444.14549-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx/ [3: In-progress v3] PCI: dwc: Add generic resources and Baikal-T1 support Link: ---you are looking at it--- [4: In-progress v2] dmaengine: dw-edma: Add RP/EP local DMA support Link: https://lore.kernel.org/linux-pci/20220503225104.12108-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx/ Note it is very recommended to merge the patchsets in the same order as they are listed in the set above in order to have them applied smoothly. Nothing prevents them from being reviewed synchronously though. Originally the patches submitted in this patchset were a part of the series: Link: https://lore.kernel.org/linux-pci/20220503214638.1895-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx/ but due to the reviewers requests the series was expanded to about 30 patches which made it too bulky for a comfortable review. So I decided to split it up into two patchsets: 2. and 3. in the table above. Regarding the series content. This patchset is mainly about adding new DW PCIe platform support - Baikal-T1 PCIe of DW PCIe v4.60a IP-core. But a set of feature-reach preparations are done first. It starts from converting the currently available DT-schema into a more flexible schemas hierarchy with separately defined regs, clocks, resets and interrupts properties. As a result the common schema can be easily re-used by all the currently available platforms while the named properties above can be either re-defined or used as is if the platforms support they. In the framework of that modification we also suggest to add a set of generic regs, clocks, resets and interrupts resource names in accordance with what the DW PCIe hardware reference manual describes and what the DW PCIe core driver already expects to be specified. Thus the new platform driver will be able to re-use the common resources infrastructure. Link: https://lore.kernel.org/linux-pci/20220324013734.18234-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx/ Changelog v2: - Rename 'syscon' property to 'baikal,bt1-syscon'. (@Rob) - Move the iATU region selection procedure into a helper function (@Rob). - Rebase from kernel v5.17 onto v5.18-rc3 since the later kernel has already DT bindings converted. (@Rob) - Use 'definitions' property instead of the '$defs' one. It fixes the dt-validate error: 'X is not of type array.' - Drop 'interrupts' and 'interrupt-names' property from being required for the native DW PCIe host. - Evaluate the 'snps,dw-pcie-common.yaml' schema in the 'socionext,uniphier-pcie-ep.yaml' DT-bindings since the later has platform-specific names defined. Link: https://lore.kernel.org/linux-pci/20220503225104.12108-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx Changelog v3: - Split up the patch "dt-bindings: PCI: dwc: Define common and native DT bindings" into a series of modifications. (@Rob) - Detach this series of the patches into a dedicated patchset. - Add a new feature patch: "PCI: dwc: Introduce generic controller capabilities interface". - Add a new feature patch: "PCI: dwc: Introduce generic resources getter". - Add a new cleanup patch: "PCI: dwc: Combine iATU detection procedures". - Add a method to at least request the generic clocks and resets. (@Rob) - Add GPIO-based PERST# signal support to the core module. - Redefine Baikal-T1 PCIe host bridge config space accessors with the pci_generic_config_read32() and pci_generic_config_write32() methods. (@Rob) - Drop synonymous from the names list in the common DT-schema since the device sub-schemas create their own enumerations anyway. - Rebase onto kernel v5.18. Signed-off-by: Serge Semin <Sergey.Semin@xxxxxxxxxxxxxxxxxxxx> Cc: Alexey Malahov <Alexey.Malahov@xxxxxxxxxxxxxxxxxxxx> Cc: Pavel Parkhomenko <Pavel.Parkhomenko@xxxxxxxxxxxxxxxxxxxx> Cc: "Krzysztof Wilczyński" <kw@xxxxxxxxx> Cc: Frank Li <Frank.Li@xxxxxxx> Cc: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx> Cc: Rob Herring <robh+dt@xxxxxxxxxx> Cc: linux-pci@xxxxxxxxxxxxxxx Cc: devicetree@xxxxxxxxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx Serge Semin (17): dt-bindings: PCI: dwc: Detach common RP/EP DT bindings dt-bindings: PCI: dwc: Remove bus node from the examples dt-bindings: PCI: dwc: Add phys/phy-names common properties dt-bindings: PCI: dwc: Add max-link-speed common property dt-bindings: PCI: dwc: Stop selecting generic bindings by default dt-bindings: PCI: dwc: Add max-functions EP property dt-bindings: PCI: dwc: Add interrupts/interrupt-names common properties dt-bindings: PCI: dwc: Add reg/reg-names common properties dt-bindings: PCI: dwc: Add clocks/resets common properties dt-bindings: PCI: dwc: Add dma-coherent property dt-bindings: PCI: dwc: Apply common schema to Rockchip DW PCIe nodes dt-bindings: PCI: dwc: Add Baikal-T1 PCIe Root Port bindings PCI: dwc: Introduce generic controller capabilities interface PCI: dwc: Introduce generic resources getter PCI: dwc: Combine iATU detection procedures PCI: dwc: Introduce generic platform clocks and resets PCI: dwc: Add Baikal-T1 PCIe controller support .../bindings/pci/baikal,bt1-pcie.yaml | 154 +++++ .../bindings/pci/fsl,imx6q-pcie.yaml | 3 +- .../bindings/pci/hisilicon,kirin-pcie.yaml | 3 +- .../bindings/pci/rockchip-dw-pcie.yaml | 3 +- .../bindings/pci/samsung,exynos-pcie.yaml | 3 +- .../bindings/pci/sifive,fu740-pcie.yaml | 3 +- .../bindings/pci/snps,dw-pcie-common.yaml | 323 +++++++++ .../bindings/pci/snps,dw-pcie-ep.yaml | 153 +++-- .../devicetree/bindings/pci/snps,dw-pcie.yaml | 202 ++++-- .../pci/socionext,uniphier-pcie-ep.yaml | 12 +- .../bindings/pci/toshiba,visconti-pcie.yaml | 3 +- drivers/pci/controller/dwc/Kconfig | 9 + drivers/pci/controller/dwc/Makefile | 1 + drivers/pci/controller/dwc/pcie-bt1.c | 649 ++++++++++++++++++ .../pci/controller/dwc/pcie-designware-ep.c | 26 +- .../pci/controller/dwc/pcie-designware-host.c | 15 +- drivers/pci/controller/dwc/pcie-designware.c | 206 ++++-- drivers/pci/controller/dwc/pcie-designware.h | 57 +- 18 files changed, 1622 insertions(+), 203 deletions(-) create mode 100644 Documentation/devicetree/bindings/pci/baikal,bt1-pcie.yaml create mode 100644 Documentation/devicetree/bindings/pci/snps,dw-pcie-common.yaml create mode 100644 drivers/pci/controller/dwc/pcie-bt1.c -- 2.35.1
