From: Hongtao Wu <billows.wu@xxxxxxxxxx> This series adds PCIe bindings for Unisoc SoCs. This controller is based on DesignWare PCIe IP. Reviewed-by: Rob Herring <robh@xxxxxxxxxx> Signed-off-by: Hongtao Wu <billows.wu@xxxxxxxxxx> --- .../devicetree/bindings/pci/sprd-pcie.yaml | 93 ++++++++++++++++++++++ 1 file changed, 93 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/sprd-pcie.yaml diff --git a/Documentation/devicetree/bindings/pci/sprd-pcie.yaml b/Documentation/devicetree/bindings/pci/sprd-pcie.yaml new file mode 100644 index 0000000..ede06a8 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/sprd-pcie.yaml @@ -0,0 +1,93 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pci/sprd-pcie.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: SoC PCIe Host Controller Device Tree Bindings + +maintainers: + - Hongtao Wu <billows.wu@xxxxxxxxxx> + +allOf: + - $ref: /schemas/pci/pci-bus.yaml# + +properties: + compatible: + items: + - const: sprd,ums9520-pcie + + reg: + minItems: 2 + items: + - description: Controller control and status registers. + - description: PCIe configuration registers. + + reg-names: + items: + - const: dbi + - const: config + + ranges: + maxItems: 2 + + num-lanes: + maximum: 1 + description: Number of lanes to use for this port. + + interrupts: + minItems: 1 + description: Builtin MSI controller and PCIe host controller. + + interrupt-names: + items: + - const: msi + + sprd,regmap-aon: + $ref: '/schemas/types.yaml#/definitions/phandle' + description: + Phandle to the AON system controller node (to access the + AON_ACCESS_PCIE_EN register on ums9520). + sprd,regmap-pmu: + $ref: '/schemas/types.yaml#/definitions/phandle' + description: + Phandle to the PMU system controller node (to access the PERST_N_ASSERT + register on ums9520). + +required: + - compatible + - reg + - reg-names + - num-lanes + - ranges + - interrupts + - interrupt-names + +additionalProperties: true + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + + ipa { + #address-cells = <2>; + #size-cells = <2>; + + pcie0: pcie@2b100000 { + compatible = "sprd,ums9520-pcie"; + reg = <0x0 0x2b100000 0x0 0x2000>, + <0x2 0x00000000 0x0 0x2000>; + reg-names = "dbi", "config"; + #address-cells = <3>; + #size-cells = <2>; + device_type = "pci"; + ranges = <0x01000000 0x0 0x00000000 0x2 0x00002000 0x0 0x00010000>, + <0x03000000 0x0 0x10000000 0x2 0x10000000 0x1 0xefffffff>; + num-lanes = <1>; + interrupts = <GIC_SPI 153 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "msi"; + + sprd,regmap-aon = <&aon_regs>; + sprd,regmap-pmu = <&pmu_regs>; + }; + }; -- 2.7.4
