0001 Device-tree bindings for AST2600 FSI master
0002 -------------------------------------------
0003
0004 The AST2600 contains two identical FSI masters. They share a clock and have a
0005 separate interrupt line and output pins.
0006
0007 Required properties:
0008 - compatible: "aspeed,ast2600-fsi-master"
0009 - reg: base address and length
0010 - clocks: phandle and clock number
0011 - interrupts: platform dependent interrupt description
0012 - pinctrl-0: phandle to pinctrl node
0013 - pinctrl-names: pinctrl state
0014
0015 Optional properties:
0016 - cfam-reset-gpios: GPIO for CFAM reset
0017
0018 - fsi-routing-gpios: GPIO for setting the FSI mux (internal or cabled)
0019 - fsi-mux-gpios: GPIO for detecting the desired FSI mux state
0020
0021
0022 Examples:
0023
0024 fsi-master {
0025 compatible = "aspeed,ast2600-fsi-master", "fsi-master";
0026 reg = <0x1e79b000 0x94>;
0027 interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
0028 pinctrl-names = "default";
0029 pinctrl-0 = <&pinctrl_fsi1_default>;
0030 clocks = <&syscon ASPEED_CLK_GATE_FSICLK>;
0031
0032 fsi-routing-gpios = <&gpio0 ASPEED_GPIO(Q, 7) GPIO_ACTIVE_HIGH>;
0033 fsi-mux-gpios = <&gpio0 ASPEED_GPIO(B, 0) GPIO_ACTIVE_HIGH>;
0034
0035 cfam-reset-gpios = <&gpio0 ASPEED_GPIO(Q, 0) GPIO_ACTIVE_LOW>;
0036 };
