This adds device tree bindings for the Intel IXP4xx PCI controller which can be used as both host and option. Cc: devicetree@xxxxxxxxxxxxxxx Cc: Arnd Bergmann <arnd@xxxxxxxx> Cc: Imre Kaloz <kaloz@xxxxxxxxxxx> Cc: Krzysztof Halasa <khalasa@xxxxxxx> Cc: Zoltan HERPAI <wigyori@xxxxxxx> Cc: Raylynn Knight <rayknight@xxxxxx> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> --- PCI maintainers: mainly looking for a review and ACK (if you care about DT bindings) the patch will be merged through ARM SoC. --- .../bindings/pci/intel,ixp4xx-pci.yaml | 96 +++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/intel,ixp4xx-pci.yaml diff --git a/Documentation/devicetree/bindings/pci/intel,ixp4xx-pci.yaml b/Documentation/devicetree/bindings/pci/intel,ixp4xx-pci.yaml new file mode 100644 index 000000000000..5b6af2f5c2a5 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/intel,ixp4xx-pci.yaml @@ -0,0 +1,96 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pci/intel,ixp4xx-pci.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Intel IXP4xx PCI controller + +maintainers: + - Linus Walleij <linus.walleij@xxxxxxxxxx> + +description: PCI host controller found in the Intel IXP4xx SoC series. + +allOf: + - $ref: /schemas/pci/pci-bus.yaml# + +properties: + compatible: + items: + - enum: + - intel,ixp42x-pci + - intel,ixp43x-pci + description: The two supported variants are ixp42x and ixp43x, + though more variants may exist. + + reg: + items: + - description: IXP4xx-specific registers + + ranges: + maxItems: 2 + description: Typically one memory range of 64MB and one IO + space range of 64KB. + + dma-ranges: + maxItems: 1 + description: The DMA range tells the PCI host which addresses + the RAM is at. It can map only 64MB so if the RAM is bigger + than 64MB the DMA access has to be restricted to these + addresses. + + "#interrupt-cells": true + + interrupt-map: true + + interrupt-map-mask: + items: + - const: 0xf800 + - const: 0 + - const: 0 + - const: 7 + +required: + - compatible + - reg + - ranges + - dma-ranges + - "#interrupt-cells" + - interrupt-map + - interrupt-map-mask + +unevaluatedProperties: false + +examples: + - | + pci@c0000000 { + compatible = "intel,ixp43x-pci"; + reg = <0xc0000000 0x1000>; + #address-cells = <3>; + #size-cells = <2>; + device_type = "pci"; + bus-range = <0x00 0xff>; + status = "disabled"; + + ranges = + <0x02000000 0 0x48000000 0x48000000 0 0x04000000>, + <0x01000000 0 0x00000000 0x4c000000 0 0x00010000>; + dma-ranges = + <0x02000000 0 0x00000000 0x00000000 0 0x04000000>; + + #interrupt-cells = <1>; + interrupt-map-mask = <0xf800 0 0 7>; + interrupt-map = + <0x0800 0 0 1 &gpio0 11 3>, /* INT A on slot 1 is irq 11 */ + <0x0800 0 0 2 &gpio0 10 3>, /* INT B on slot 1 is irq 10 */ + <0x0800 0 0 3 &gpio0 9 3>, /* INT C on slot 1 is irq 9 */ + <0x0800 0 0 4 &gpio0 8 3>, /* INT D on slot 1 is irq 8 */ + <0x1000 0 0 1 &gpio0 10 3>, /* INT A on slot 2 is irq 10 */ + <0x1000 0 0 2 &gpio0 9 3>, /* INT B on slot 2 is irq 9 */ + <0x1000 0 0 3 &gpio0 8 3>, /* INT C on slot 2 is irq 8 */ + <0x1000 0 0 4 &gpio0 11 3>, /* INT D on slot 2 is irq 11 */ + <0x1800 0 0 1 &gpio0 9 3>, /* INT A on slot 3 is irq 9 */ + <0x1800 0 0 2 &gpio0 8 3>, /* INT B on slot 3 is irq 8 */ + <0x1800 0 0 3 &gpio0 11 3>, /* INT C on slot 3 is irq 11 */ + <0x1800 0 0 4 &gpio0 10 3>; /* INT D on slot 3 is irq 10 */ + }; -- 2.29.2
