| Message ID | 1598003509-27896-2-git-send-email-wuht06@gmail.com (mailing list archive) |
|---|---|
| State | Changes Requested, archived |
| Delegated to: | Lorenzo Pieralisi |
| Headers | show |
| Series | [1/2] dt-bindings: PCI: sprd: Document Unisoc PCIe RC host controller | expand |
On Fri, Aug 21, 2020 at 3:52 AM Hongtao Wu <wuht06@gmail.com> wrote: > > From: Billows Wu <billows.wu@unisoc.com> > > This series adds PCIe bindings for Uisoc SoCs. typo > This controller is based on DesignWare PCIe IP. > > Signed-off-by: Billows Wu <billows.wu@unisoc.com> > --- > .../devicetree/bindings/pci/sprd-pcie.yaml | 88 ++++++++++++++++++++++ > 1 file changed, 88 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..6eab4b8 > --- /dev/null > +++ b/Documentation/devicetree/bindings/pci/sprd-pcie.yaml > @@ -0,0 +1,88 @@ > +# 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: > + - Billows Wu <billows.wu@unisoc.com> > + > +allOf: > + - $ref: /schemas/pci/pci-bus.yaml# > + - $ref: "sprd-pcie.yaml#" Drop this. You don't need to include yourself. > + > +properties: > + compatible: > + items: > + - const: sprd,pcie > + - const: sprd,pcie-ep > + > + reg: > + minItems: 2 > + maxItems: 3 > + items: > + - description: Controller control and status registers. > + - description: PCIe shadow registers. > + - description: PCIe configuration registers. > + > + reg-names: > + items: > + - const: dbi > + - const: dbi2 > + - const: cfg 'config' is the standard name. > + > + ranges: > + maxItems: 2 > + > + num-lanes: > + maxItems: 1 maxItems is for arrays and this is not an array. How many lanes are valid? enum: [ 1, 2, 27?, ... ] > + description: Number of lanes to use for this port. > + > + num-ib-windows: > + maxItems: 1 Not an array. > + description: Number of inbound windows to use for this port. > + > + num-ob-windows: > + maxItems: 1 Not an array. > + description: Number of outbound windows to use for this port. > + > + bus-range: > + description: Range of bus numbers associated with this controller. Drop if you don't have constraints. > + > + interrupts: > + maxItems: 1 > + > + interrupt-names: > + maxItems: 1 Need to define the name, though you don't really need this with only 1. > + > +required: > + - compatible > + - reg > + - reg-names > + - num-lanes > + - ranges > + - bus-range > + - interrupts > + - interrupt-names > + > +examples: > + - | > + #include <dt-bindings/interrupt-controller/arm-gic.h> > + pcie0@2b100000 { > + compatible = "sprd,pcie", "snps,dw-pcie"; Didn't document "snps,dw-pcie". You'll need a custom 'select' to avoid selecting all instances of "snps,dw-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>; > + bus-range = <0 15>; > + num-lanes = <1>; > + num-viewport = <8>; > + interrupts = <GIC_SPI 153 IRQ_TYPE_LEVEL_HIGH>; > + interrupt-names = "msi"; > + }; > -- > 2.7.4 >
diff --git a/Documentation/devicetree/bindings/pci/sprd-pcie.yaml b/Documentation/devicetree/bindings/pci/sprd-pcie.yaml new file mode 100644 index 0000000..6eab4b8 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/sprd-pcie.yaml @@ -0,0 +1,88 @@ +# 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: + - Billows Wu <billows.wu@unisoc.com> + +allOf: + - $ref: /schemas/pci/pci-bus.yaml# + - $ref: "sprd-pcie.yaml#" + +properties: + compatible: + items: + - const: sprd,pcie + - const: sprd,pcie-ep + + reg: + minItems: 2 + maxItems: 3 + items: + - description: Controller control and status registers. + - description: PCIe shadow registers. + - description: PCIe configuration registers. + + reg-names: + items: + - const: dbi + - const: dbi2 + - const: cfg + + ranges: + maxItems: 2 + + num-lanes: + maxItems: 1 + description: Number of lanes to use for this port. + + num-ib-windows: + maxItems: 1 + description: Number of inbound windows to use for this port. + + num-ob-windows: + maxItems: 1 + description: Number of outbound windows to use for this port. + + bus-range: + description: Range of bus numbers associated with this controller. + + interrupts: + maxItems: 1 + + interrupt-names: + maxItems: 1 + +required: + - compatible + - reg + - reg-names + - num-lanes + - ranges + - bus-range + - interrupts + - interrupt-names + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + pcie0@2b100000 { + compatible = "sprd,pcie", "snps,dw-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>; + bus-range = <0 15>; + num-lanes = <1>; + num-viewport = <8>; + interrupts = <GIC_SPI 153 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "msi"; + };