| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | * Amazon Annapurna Labs PCIe host bridge |
| 2 | |
| 3 | Amazon's Annapurna Labs PCIe Host Controller is based on the Synopsys DesignWare |
| 4 | PCI core. It inherits common properties defined in |
| 5 | Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml. |
| 6 | |
| 7 | Properties of the host controller node that differ from it are: |
| 8 | |
| 9 | - compatible: |
| 10 | Usage: required |
| 11 | Value type: <stringlist> |
| 12 | Definition: Value should contain |
| 13 | - "amazon,al-alpine-v2-pcie" for alpine_v2 |
| 14 | - "amazon,al-alpine-v3-pcie" for alpine_v3 |
| 15 | |
| 16 | - reg: |
| 17 | Usage: required |
| 18 | Value type: <prop-encoded-array> |
| 19 | Definition: Register ranges as listed in the reg-names property |
| 20 | |
| 21 | - reg-names: |
| 22 | Usage: required |
| 23 | Value type: <stringlist> |
| 24 | Definition: Must include the following entries |
| 25 | - "config" PCIe ECAM space |
| 26 | - "controller" AL proprietary registers |
| 27 | - "dbi" Designware PCIe registers |
| 28 | |
| 29 | Example: |
| 30 | |
| 31 | pcie-external0: pcie@fb600000 { |
| 32 | compatible = "amazon,al-alpine-v3-pcie"; |
| 33 | reg = <0x0 0xfb600000 0x0 0x00100000 |
| 34 | 0x0 0xfd800000 0x0 0x00010000 |
| 35 | 0x0 0xfd810000 0x0 0x00001000>; |
| 36 | reg-names = "config", "controller", "dbi"; |
| 37 | bus-range = <0 255>; |
| 38 | device_type = "pci"; |
| 39 | #address-cells = <3>; |
| 40 | #size-cells = <2>; |
| 41 | #interrupt-cells = <1>; |
| 42 | interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>; |
| 43 | interrupt-map-mask = <0x00 0 0 7>; |
| 44 | interrupt-map = <0x0000 0 0 1 &gic GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>; /* INTa */ |
| 45 | ranges = <0x02000000 0x0 0xc0010000 0x0 0xc0010000 0x0 0x07ff0000>; |
| 46 | }; |