projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| d0fc2eaa KG |
1 | * Parallel I/O Ports |
| 2 | ||
| 3 | This node configures Parallel I/O ports for CPUs with QE support. | |
| 4 | The node should reside in the "soc" node of the tree. For each | |
| 5 | device that using parallel I/O ports, a child node should be created. | |
| 6 | See the definition of the Pin configuration nodes below for more | |
| 7 | information. | |
| 8 | ||
| 9 | Required properties: | |
| 10 | - device_type : should be "par_io". | |
| 11 | - reg : offset to the register set and its length. | |
| 12 | - num-ports : number of Parallel I/O ports | |
| 13 | ||
| 14 | Example: | |
| 15 | par_io@1400 { | |
| 16 | reg = <1400 100>; | |
| 17 | #address-cells = <1>; | |
| 18 | #size-cells = <0>; | |
| 19 | device_type = "par_io"; | |
| 20 | num-ports = <7>; | |
| 21 | ucc_pin@01 { | |
| 22 | ...... | |
| 23 | }; | |
| 24 | ||
| 25 | Note that "par_io" nodes are obsolete, and should not be used for | |
| 26 | the new device trees. Instead, each Par I/O bank should be represented | |
| 27 | via its own gpio-controller node: | |
| 28 | ||
| 29 | Required properties: | |
| 30 | - #gpio-cells : should be "2". | |
| 31 | - compatible : should be "fsl,<chip>-qe-pario-bank", | |
| 32 | "fsl,mpc8323-qe-pario-bank". | |
| 33 | - reg : offset to the register set and its length. | |
| 34 | - gpio-controller : node to identify gpio controllers. | |
| 35 | ||
| 36 | Example: | |
| 37 | qe_pio_a: gpio-controller@1400 { | |
| 38 | #gpio-cells = <2>; | |
| 39 | compatible = "fsl,mpc8360-qe-pario-bank", | |
| 40 | "fsl,mpc8323-qe-pario-bank"; | |
| 41 | reg = <0x1400 0x18>; | |
| 42 | gpio-controller; | |
| 43 | }; | |
| 44 | ||
| 45 | qe_pio_e: gpio-controller@1460 { | |
| 46 | #gpio-cells = <2>; | |
| 47 | compatible = "fsl,mpc8360-qe-pario-bank", | |
| 48 | "fsl,mpc8323-qe-pario-bank"; | |
| 49 | reg = <0x1460 0x18>; | |
| 50 | gpio-controller; | |
| 51 | }; |