On Tue, Sep 23, 2025 at 08:12:00PM +0800, zhangsenchuan@xxxxxxxxxxxxxxxxxx wrote: > 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. > > Signed-off-by: Yu Ning <ningyu@xxxxxxxxxxxxxxxxxx> > Signed-off-by: Yanghui Ou <ouyanghui@xxxxxxxxxxxxxxxxxx> > Signed-off-by: Senchuan Zhang <zhangsenchuan@xxxxxxxxxxxxxxxxxx> > --- > .../bindings/pci/eswin,eic7700-pcie.yaml | 173 ++++++++++++++++++ > 1 file changed, 173 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..2f105d09e38e > --- /dev/null > +++ b/Documentation/devicetree/bindings/pci/eswin,eic7700-pcie.yaml > @@ -0,0 +1,173 @@ > +# 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> > + - Yanghui Ou <ouyanghui@xxxxxxxxxxxxxxxxxx> > + > +description: > + The PCIe controller on EIC7700 SoC. > + > +allOf: > + - $ref: /schemas/pci/pci-host-bridge.yaml# In drivers, you put drivers/pci/controller/dwc/pcie-eic7700.c under dwc, suppose it is dwc core. so it should refer to snps,dw-pcie.yaml. If reg-names or interrupt-names don't match your requirement, please update snps,dw-pcie.yaml in case difference vendor use difference name for the same functions. Frank > + > +properties: > + compatible: > + const: eswin,eic7700-pcie > + > + reg: > + maxItems: 3 > + > + reg-names: > + items: > + - const: dbi > + - const: config > + - const: mgmt > + > + ranges: > + maxItems: 3 > + > + num-lanes: > + maximum: 4 > + > + '#interrupt-cells': > + const: 1 > + > + interrupts: > + maxItems: 9 > + > + interrupt-names: > + items: > + - const: msi > + - const: inta # Assert_INTA > + - const: intb # Assert_INTB > + - const: intc # Assert_INTC > + - const: intd # Assert_INTD > + - const: inte # Desassert_INTA > + - const: intf # Desassert_INTB > + - const: intg # Desassert_INTC > + - const: inth # Desassert_INTD > + > + interrupt-map: > + maxItems: 4 > + > + interrupt-map-mask: > + items: > + - const: 0 > + - const: 0 > + - const: 0 > + - const: 7 > + > + clocks: > + maxItems: 4 > + > + clock-names: > + items: > + - const: mstr > + - const: dbi > + - const: pclk > + - const: aux > + > + resets: > + maxItems: 2 > + > + reset-names: > + items: > + - const: cfg > + - const: powerup > + > +patternProperties: > + "^pcie@": > + type: object > + $ref: /schemas/pci/pci-pci-bridge.yaml# > + > + properties: > + reg: > + maxItems: 1 > + > + resets: > + maxItems: 1 > + > + reset-names: > + items: > + - const: perst > + > + required: > + - reg > + - ranges > + - resets > + - reset-names > + > + unevaluatedProperties: false > + > +required: > + - compatible > + - reg > + - ranges > + - interrupts > + - interrupt-names > + - interrupt-map-mask > + - interrupt-map > + - '#interrupt-cells' > + - clocks > + - clock-names > + - resets > + - reset-names > + > +unevaluatedProperties: false > + > +examples: > + - | > + soc { > + #address-cells = <2>; > + #size-cells = <2>; > + > + pcie@54000000 { > + compatible = "eswin,eic7700-pcie"; > + reg = <0x0 0x54000000 0x0 0x4000000>, > + <0x0 0x40000000 0x0 0x800000>, > + <0x0 0x50000000 0x0 0x100000>; > + reg-names = "dbi", "config", "mgmt"; > + #address-cells = <3>; > + #size-cells = <2>; > + #interrupt-cells = <1>; > + ranges = <0x01000000 0x0 0x40800000 0x0 0x40800000 0x0 0x800000>, > + <0x02000000 0x0 0x41000000 0x0 0x41000000 0x0 0xf000000>, > + <0x43000000 0x80 0x00000000 0x80 0x00000000 0x2 0x00000000>; > + bus-range = <0x00 0xff>; > + clocks = <&clock 203>, > + <&clock 204>, > + <&clock 205>, > + <&clock 206>; > + clock-names = "mstr", "dbi", "pclk", "aux"; > + resets = <&reset 97>, > + <&reset 98>; > + reset-names = "cfg", "powerup"; > + interrupts = <220>, <179>, <180>, <181>, <182>, <183>, <184>, <185>, <186>; > + interrupt-names = "msi", "inta", "intb", "intc", "intd", > + "inte", "intf", "intg", "inth"; > + 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>; > + device_type = "pci"; > + pcie@0 { > + reg = <0x0 0x0 0x0 0x0 0x0>; > + #address-cells = <3>; > + #size-cells = <2>; > + ranges; > + device_type = "pci"; > + num-lanes = <4>; > + resets = <&reset 99>; > + reset-names = "perst"; > + }; > + }; > + }; > -- > 2.25.1 >
