| Device-tree bindings for ColdFire offloaded gpio-based FSI master driver |
| ------------------------------------------------------------------------ |
| |
| Required properties: |
| - compatible = |
| "aspeed,ast2400-cf-fsi-master" for an AST2400 based system |
| or |
| "aspeed,ast2500-cf-fsi-master" for an AST2500 based system |
| |
| - clock-gpios = <gpio-descriptor>; : GPIO for FSI clock |
| - data-gpios = <gpio-descriptor>; : GPIO for FSI data signal |
| - enable-gpios = <gpio-descriptor>; : GPIO for enable signal |
| - trans-gpios = <gpio-descriptor>; : GPIO for voltage translator enable |
| - mux-gpios = <gpio-descriptor>; : GPIO for pin multiplexing with other |
| functions (eg, external FSI masters) |
| - memory-region = <phandle>; : Reference to the reserved memory for |
| the ColdFire. Must be 2M aligned on |
| AST2400 and 1M aligned on AST2500 |
| - aspeed,sram = <phandle>; : Reference to the SRAM node. |
| - aspeed,cvic = <phandle>; : Reference to the CVIC node. |
| |
| Examples: |
| |
| fsi-master { |
| compatible = "aspeed,ast2500-cf-fsi-master", "fsi-master"; |
| |
| clock-gpios = <&gpio 0>; |
| data-gpios = <&gpio 1>; |
| enable-gpios = <&gpio 2>; |
| trans-gpios = <&gpio 3>; |
| mux-gpios = <&gpio 4>; |
| |
| memory-region = <&coldfire_memory>; |
| aspeed,sram = <&sram>; |
| aspeed,cvic = <&cvic>; |
| } |
