From: Senchuan Zhang <zhangsenchuan@xxxxxxxxxxxxxxxxxx> Add Device Tree binding documentation for the ESWIN EIC7700 PCIe controller module,the PCIe controller enables the core to correctly initialize and manage the PCIe bus and connected devices. Co-developed-by: Yu Ning <ningyu@xxxxxxxxxxxxxxxxxx> Signed-off-by: Yu Ning <ningyu@xxxxxxxxxxxxxxxxxx> Signed-off-by: Senchuan Zhang <zhangsenchuan@xxxxxxxxxxxxxxxxxx> --- .../bindings/pci/eswin,eic7700-pcie.yaml | 171 ++++++++++++++++++ 1 file changed, 171 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/eswin,eic7700-pcie.yaml diff --git a/Documentation/devicetree/bindings/pci/eswin,eic7700-pcie.yaml b/Documentation/devicetree/bindings/pci/eswin,eic7700-pcie.yaml new file mode 100644 index 000000000000..e1d150c7c81a --- /dev/null +++ b/Documentation/devicetree/bindings/pci/eswin,eic7700-pcie.yaml @@ -0,0 +1,171 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pci/eswin,eic7700-pcie.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Eswin EIC7700 PCIe host controller + +maintainers: + - Yu Ning <ningyu@xxxxxxxxxxxxxxxxxx> + - Senchuan Zhang <zhangsenchuan@xxxxxxxxxxxxxxxxxx> + +description: | + The PCIe controller on EIC7700 SoC. + +properties: + compatible: + const: eswin,eic7700-pcie + + reg: + maxItems: 3 + + reg-names: + items: + - const: dbi + - const: config + - const: mgmt + + "#address-cells": + const: 3 + "#size-cells": + const: 2 + '#interrupt-cells': + const: 1 + + interrupts: + maxItems: 9 + + interrupt-names: + items: + - const: msi + - const: inta + - const: intb + - const: intc + - const: intd + + interrupt-controller: + type: object + + interrupt-map: + maxItems: 4 + + interrupt-map-mask: + items: + - const: 0 + - const: 0 + - const: 0 + - const: 7 + + clocks: + maxItems: 4 + description: handles to clock for the pcie controller. + + clock-names: + items: + - const: pcie_aclk + - const: pcie_cfg_clk + - const: pcie_cr_clk + - const: pcie_aux_clk + description: the name of each clock. + + resets: + description: resets to be used by the controller. + + reset-names: + items: + - const: pcie_cfg + - const: pcie_powerup + - const: pcie_pwren + description: names of the resets listed in resets property in the same order. + + bus-range: + items: + - const: 0 + - const: 0xff + + device_type: + const: pci + + ranges: true + + dma-noncoherent: true + + num-lanes: + maximum: 4 + + numa-node-id: + maximum: 0 + +required: + - compatible + - reg + - reg-names + - interrupts + - interrupt-names + - interrupt-parent + - interrupt-map-mask + - interrupt-map + - '#address-cells' + - '#size-cells' + - '#interrupt-cells' + - clocks + - clock-names + - resets + - reset-names + - bus-range + - dma-noncoherent + - num-lanes + - ranges + - numa-node-id + +additionalProperties: false + +examples: + - | + soc { + #address-cells = <2>; + #size-cells = <2>; + + pcie: pcie@54000000 { + compatible = "eswin,eic7700-pcie"; + clocks = <&clock 562>, + <&clock 563>, + <&clock 564>, + <&clock 565>; + clock-names = "pcie_aclk", "pcie_cfg_clk", "pcie_cr_clk", "pcie_aux_clk"; + + reset-names = "pcie_cfg", "pcie_powerup", "pcie_pwren"; + resets = <&reset 8 (1 << 0)>, + <&reset 8 (1 << 1)>, + <&reset 8 (1 << 2)>; + + #address-cells = <3>; + #size-cells = <2>; + #interrupt-cells = <1>; + + reg = <0x0 0x54000000 0x0 0x4000000>, + <0x0 0x40000000 0x0 0x800000>, + <0x0 0x50000000 0x0 0x100000>; + reg-names = "dbi", "config", "mgmt"; + device_type = "pci"; + + bus-range = <0x0 0xff>; + ranges = <0x81000000 0x0 0x40800000 0x0 0x40800000 0x0 0x800000>, + <0x82000000 0x0 0x41000000 0x0 0x41000000 0x0 0xf000000>, + <0xc3000000 0x80 0x00000000 0x80 0x00000000 0x2 0x00000000>; + + num-lanes = <0x4>; + interrupts = <220>, <179>, <180>, <181>, <182>, <183>, <184>, <185>, <186>; + interrupt-names = "msi", "inta", "intb", "intc", "intd"; + interrupt-parent = <&plic>; + interrupt-map-mask = <0x0 0x0 0x0 0x7>; + interrupt-map = <0x0 0x0 0x0 0x1 &plic 179>, + <0x0 0x0 0x0 0x2 &plic 180>, + <0x0 0x0 0x0 0x3 &plic 181>, + <0x0 0x0 0x0 0x4 &plic 182>; + status = "disabled"; + numa-node-id = <0>; + dma-noncoherent; + }; + }; -- 2.25.1
