projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 94aea0c6 MC |
1 | Bindings for Analog Devices ADGS1408/1409 8:1/Dual 4:1 Mux |
| 2 | ||
| 3 | Required properties: | |
| 4 | - compatible : Should be one of | |
| 5 | * "adi,adgs1408" | |
| 6 | * "adi,adgs1409" | |
| 9b358af7 | 7 | * Standard mux-controller bindings as described in mux-controller.yaml |
| 94aea0c6 MC |
8 | |
| 9 | Optional properties for ADGS1408/1409: | |
| 10 | - gpio-controller : if present, #gpio-cells is required. | |
| 11 | - #gpio-cells : should be <2> | |
| 12 | - First cell is the GPO line number, i.e. 0 to 3 | |
| 13 | for ADGS1408 and 0 to 4 for ADGS1409 | |
| 14 | - Second cell is used to specify active high (0) | |
| 15 | or active low (1) | |
| 16 | ||
| 17 | Optional properties: | |
| 18 | - idle-state : if present, the state that the mux controller will have | |
| 19 | when idle. The special state MUX_IDLE_AS_IS is the default and | |
| 20 | MUX_IDLE_DISCONNECT is also supported. | |
| 21 | ||
| 22 | States 0 through 7 correspond to signals S1 through S8 in the datasheet. | |
| 23 | For ADGS1409 only states 0 to 3 are available. | |
| 24 | ||
| 25 | Example: | |
| 26 | ||
| 27 | /* | |
| 28 | * One mux controller. | |
| 29 | * Mux state set to idle as is (no idle-state declared) | |
| 30 | */ | |
| 31 | &spi0 { | |
| 32 | mux: mux-controller@0 { | |
| 33 | compatible = "adi,adgs1408"; | |
| 34 | reg = <0>; | |
| 35 | spi-max-frequency = <1000000>; | |
| 36 | #mux-control-cells = <0>; | |
| 37 | }; | |
| 38 | } | |
| 39 | ||
| 40 | adc-mux { | |
| 41 | compatible = "io-channel-mux"; | |
| 42 | io-channels = <&adc 1>; | |
| 43 | io-channel-names = "parent"; | |
| 44 | mux-controls = <&mux>; | |
| 45 | ||
| 46 | channels = "out_a0", "out_a1", "test0", "test1", | |
| 47 | "out_b0", "out_b1", "testb0", "testb1"; | |
| 48 | }; |