Path: blob/master/Documentation/devicetree/bindings/fsi/fsi-master-ast-cf.txt
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Device-tree bindings for ColdFire offloaded gpio-based FSI master driver1------------------------------------------------------------------------23Required properties:4- compatible =5"aspeed,ast2400-cf-fsi-master" for an AST2400 based system6or7"aspeed,ast2500-cf-fsi-master" for an AST2500 based system89- clock-gpios = <gpio-descriptor>; : GPIO for FSI clock10- data-gpios = <gpio-descriptor>; : GPIO for FSI data signal11- enable-gpios = <gpio-descriptor>; : GPIO for enable signal12- trans-gpios = <gpio-descriptor>; : GPIO for voltage translator enable13- mux-gpios = <gpio-descriptor>; : GPIO for pin multiplexing with other14functions (eg, external FSI masters)15- memory-region = <phandle>; : Reference to the reserved memory for16the ColdFire. Must be 2M aligned on17AST2400 and 1M aligned on AST250018- aspeed,sram = <phandle>; : Reference to the SRAM node.19- aspeed,cvic = <phandle>; : Reference to the CVIC node.2021Examples:2223fsi-master {24compatible = "aspeed,ast2500-cf-fsi-master", "fsi-master";2526clock-gpios = <&gpio 0>;27data-gpios = <&gpio 1>;28enable-gpios = <&gpio 2>;29trans-gpios = <&gpio 3>;30mux-gpios = <&gpio 4>;3132memory-region = <&coldfire_memory>;33aspeed,sram = <&sram>;34aspeed,cvic = <&cvic>;35}363738