| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 1 | Device-tree bindings for AST2600 FSI master |
| 2 | ------------------------------------------- |
| 3 | |
| 4 | The AST2600 contains two identical FSI masters. They share a clock and have a |
| 5 | separate interrupt line and output pins. |
| 6 | |
| 7 | Required properties: |
| 8 | - compatible: "aspeed,ast2600-fsi-master" |
| 9 | - reg: base address and length |
| 10 | - clocks: phandle and clock number |
| 11 | - interrupts: platform dependent interrupt description |
| 12 | - pinctrl-0: phandle to pinctrl node |
| 13 | - pinctrl-names: pinctrl state |
| 14 | |
| 15 | Optional properties: |
| 16 | - cfam-reset-gpios: GPIO for CFAM reset |
| 17 | |
| 18 | - fsi-routing-gpios: GPIO for setting the FSI mux (internal or cabled) |
| 19 | - fsi-mux-gpios: GPIO for detecting the desired FSI mux state |
| 20 | |
| 21 | |
| 22 | Examples: |
| 23 | |
| 24 | fsi-master { |
| 25 | compatible = "aspeed,ast2600-fsi-master", "fsi-master"; |
| 26 | reg = <0x1e79b000 0x94>; |
| 27 | interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>; |
| 28 | pinctrl-names = "default"; |
| 29 | pinctrl-0 = <&pinctrl_fsi1_default>; |
| 30 | clocks = <&syscon ASPEED_CLK_GATE_FSICLK>; |
| 31 | |
| 32 | fsi-routing-gpios = <&gpio0 ASPEED_GPIO(Q, 7) GPIO_ACTIVE_HIGH>; |
| 33 | fsi-mux-gpios = <&gpio0 ASPEED_GPIO(B, 0) GPIO_ACTIVE_HIGH>; |
| 34 | |
| 35 | cfam-reset-gpios = <&gpio0 ASPEED_GPIO(Q, 0) GPIO_ACTIVE_LOW>; |
| 36 | }; |