projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 2be5263c BH |
1 | Device-tree bindings for ColdFire offloaded gpio-based FSI master driver |
| 2 | ------------------------------------------------------------------------ | |
| 3 | ||
| 4 | Required properties: | |
| 5 | - compatible = | |
| 6 | "aspeed,ast2400-cf-fsi-master" for an AST2400 based system | |
| 7 | or | |
| 8 | "aspeed,ast2500-cf-fsi-master" for an AST2500 based system | |
| 9 | ||
| 10 | - clock-gpios = <gpio-descriptor>; : GPIO for FSI clock | |
| 11 | - data-gpios = <gpio-descriptor>; : GPIO for FSI data signal | |
| 12 | - enable-gpios = <gpio-descriptor>; : GPIO for enable signal | |
| 13 | - trans-gpios = <gpio-descriptor>; : GPIO for voltage translator enable | |
| 14 | - mux-gpios = <gpio-descriptor>; : GPIO for pin multiplexing with other | |
| 15 | functions (eg, external FSI masters) | |
| 16 | - memory-region = <phandle>; : Reference to the reserved memory for | |
| 17 | the ColdFire. Must be 2M aligned on | |
| 18 | AST2400 and 1M aligned on AST2500 | |
| 19 | - aspeed,sram = <phandle>; : Reference to the SRAM node. | |
| 20 | - aspeed,cvic = <phandle>; : Reference to the CVIC node. | |
| 21 | ||
| 22 | Examples: | |
| 23 | ||
| 24 | fsi-master { | |
| 25 | compatible = "aspeed,ast2500-cf-fsi-master", "fsi-master"; | |
| 26 | ||
| 27 | clock-gpios = <&gpio 0>; | |
| 28 | data-gpios = <&gpio 1>; | |
| 29 | enable-gpios = <&gpio 2>; | |
| 30 | trans-gpios = <&gpio 3>; | |
| 31 | mux-gpios = <&gpio 4>; | |
| 32 | ||
| 33 | memory-region = <&coldfire_memory>; | |
| 34 | aspeed,sram = <&sram>; | |
| 35 | aspeed,cvic = <&cvic>; | |
| 36 | } |