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Signed-off-by: Sushrut Shree Trivedi --- .../devicetree/bindings/pci/qcom,shikra-pcie.yaml | 211 +++++++++++++++++++++ 1 file changed, 211 insertions(+) diff --git a/Documentation/devicetree/bindings/pci/qcom,shikra-pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,shikra-pcie.yaml new file mode 100644 index 000000000000..f9d1dba9dd2e --- /dev/null +++ b/Documentation/devicetree/bindings/pci/qcom,shikra-pcie.yaml @@ -0,0 +1,211 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pci/qcom,shikra-pcie.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Shikra PCI Express Root Complex + +maintainers: + - Bjorn Andersson + - Manivannan Sadhasivam + +description: + Qualcomm Shikra SoC (and compatible) PCIe root complex controller is based on + the Synopsys DesignWare PCIe IP. + +properties: + compatible: + const: qcom,shikra-pcie + + reg: + minItems: 5 + maxItems: 6 + + reg-names: + minItems: 5 + items: + - const: parf # Qualcomm specific registers + - const: dbi # DesignWare PCIe registers + - const: elbi # External local bus interface registers + - const: atu # ATU address space + - const: config # PCIe configuration space + - const: mhi # MHI registers + + clocks: + minItems: 7 + maxItems: 9 + + clock-names: + minItems: 7 + items: + - const: aux # Auxiliary clock + - const: cfg # Configuration clock + - const: bus_master # Master AXI clock + - const: bus_slave # Slave AXI clock + - const: slave_q2a # Slave Q2A clock + - const: ddrss_memnoc_pcie # PCIe SF MEMNOC clock + - const: tile # PCIe tile SYS NoC clock + - const: qmip_pcie_ahb # QMIP PCIe AHB clock + + interrupts: + minItems: 8 + maxItems: 9 + + interrupt-names: + minItems: 8 + items: + - const: msi0 + - const: msi1 + - const: msi2 + - const: msi3 + - const: msi4 + - const: msi5 + - const: msi6 + - const: msi7 + - const: global + + resets: + minItems: 1 + maxItems: 2 + + reset-names: + minItems: 1 + items: + - const: pci # PCIe core reset + - const: link_down # PCIe link down reset + +required: + - power-domains + - resets + - reset-names + +allOf: + - $ref: qcom,pcie-common.yaml# + +unevaluatedProperties: false + +examples: + - | + #include + #include + #include + + soc { + #address-cells = <2>; + #size-cells = <2>; + + pcie@45e8000 { + device_type = "pci"; + compatible = "qcom,shikra-pcie"; + reg = <0x0 0x045e8000 0x0 0x3000>, + <0x0 0x60000000 0x0 0xf1d>, + <0x0 0x60000f20 0x0 0xa8>, + <0x0 0x60001000 0x0 0x1000>, + <0x0 0x60100000 0x0 0x100000>, + <0x0 0x045eb000 0x0 0x1000>; + reg-names = "parf", + "dbi", + "elbi", + "atu", + "config", + "mhi"; + #address-cells = <3>; + #size-cells = <2>; + ranges = <0x01000000 0x0 0x00000000 0x0 0x60200000 0x0 0x100000>, + <0x02000000 0x0 0x60300000 0x0 0x60300000 0x0 0x3d00000>, + <0x03000000 0x4 0x00000000 0x4 0x00000000 0x3 0x0000000>; + bus-range = <0x00 0xff>; + + linux,pci-domain = <0>; + num-lanes = <1>; + + interrupts = , + , + , + , + , + , + , + , + ; + interrupt-names = "msi0", + "msi1", + "msi2", + "msi3", + "msi4", + "msi5", + "msi6", + "msi7", + "global"; + + interrupt-map = <0 0 0 1 &intc 0 0 0 499 IRQ_TYPE_LEVEL_HIGH>, + <0 0 0 2 &intc 0 0 0 500 IRQ_TYPE_LEVEL_HIGH>, + <0 0 0 3 &intc 0 0 0 501 IRQ_TYPE_LEVEL_HIGH>, + <0 0 0 4 &intc 0 0 0 502 IRQ_TYPE_LEVEL_HIGH>; + interrupt-map-mask = <0 0 0 0x7>; + #interrupt-cells = <1>; + + clocks = <&gcc GCC_PCIE_AUX_CLK>, + <&gcc GCC_PCIE_CFG_AHB_CLK>, + <&gcc GCC_PCIE_MSTR_AXI_CLK>, + <&gcc GCC_PCIE_SLV_AXI_CLK>, + <&gcc GCC_PCIE_SLV_Q2A_AXI_CLK>, + <&gcc GCC_DDRSS_MEMNOC_PCIE_SF_CLK>, + <&gcc GCC_PCIE_TILE_AXI_SYS_NOC_CLK>, + <&gcc GCC_QMIP_PCIE_CFG_AHB_CLK>; + clock-names = "aux", + "cfg", + "bus_master", + "bus_slave", + "slave_q2a", + "ddrss_memnoc_pcie", + "tile", + "qmip_pcie_ahb"; + + assigned-clocks = <&gcc GCC_PCIE_AUX_CLK>; + assigned-clock-rates = <19200000>; + + interconnects = <&system_noc MASTER_PCIE2_0 RPM_ALWAYS_TAG + &mc_virt SLAVE_EBI_CH0 RPM_ALWAYS_TAG>, + <&mem_noc MASTER_AMPSS_M0 RPM_ACTIVE_TAG + &config_noc SLAVE_PCIE2_0 RPM_ACTIVE_TAG>; + + interconnect-names = "pcie-mem", + "cpu-pcie"; + + iommu-map = <0x0 &apps_smmu 0x800 0x1>, + <0x100 &apps_smmu 0x801 0x1>; + + resets = <&gcc GCC_PCIE_BCR>; + reset-names = "pci"; + + power-domains = <&gcc GCC_PCIE_GDSC>; + + max-link-speed = <2>; + + operating-points-v2 = <&pcie_opp_table>; + + status = "disabled"; + + pcie_opp_table: opp-table { + compatible = "operating-points-v2"; + + /* GEN 1 x1 */ + opp-2500000 { + opp-hz = /bits/ 64 <2500000>; + required-opps = <&rpmpd_opp_nom>; + opp-peak-kBps = <250000 1>; + opp-level = <1>; + }; + + /* GEN 2 x1 */ + opp-5000000 { + opp-hz = /bits/ 64 <5000000>; + required-opps = <&rpmpd_opp_nom>; + opp-peak-kBps = <500000 1>; + opp-level = <2>; + }; + }; + }; + }; -- 2.43.0