bindings/fsi/fsi-master-ast-cf.txt

0001 Device-tree bindings for ColdFire offloaded gpio-based FSI master driver
0002 ------------------------------------------------------------------------
0003
0004 Required properties:
0005  - compatible =
0006         "aspeed,ast2400-cf-fsi-master" for an AST2400 based system
0007    or
0008         "aspeed,ast2500-cf-fsi-master" for an AST2500 based system
0009
0010  - clock-gpios = <gpio-descriptor>;     : GPIO for FSI clock
0011  - data-gpios = <gpio-descriptor>;      : GPIO for FSI data signal
0012  - enable-gpios = <gpio-descriptor>;    : GPIO for enable signal
0013  - trans-gpios = <gpio-descriptor>;     : GPIO for voltage translator enable
0014  - mux-gpios = <gpio-descriptor>;       : GPIO for pin multiplexing with other
0015                                           functions (eg, external FSI masters)
0016  - memory-region = <phandle>;           : Reference to the reserved memory for
0017                                           the ColdFire. Must be 2M aligned on
0018                                           AST2400 and 1M aligned on AST2500
0019  - aspeed,sram = <phandle>;             : Reference to the SRAM node.
0020  - aspeed,cvic = <phandle>;             : Reference to the CVIC node.
0021
0022 Examples:
0023
0024     fsi-master {
0025         compatible = "aspeed,ast2500-cf-fsi-master", "fsi-master";
0026
0027         clock-gpios = <&gpio 0>;
0028         data-gpios = <&gpio 1>;
0029         enable-gpios = <&gpio 2>;
0030         trans-gpios = <&gpio 3>;
0031         mux-gpios = <&gpio 4>;
0032
0033         memory-region = <&coldfire_memory>;
0034         aspeed,sram = <&sram>;
0035         aspeed,cvic = <&cvic>;
0036     }