projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 86f8973c UKK |
1 | * Energy Micro EFM32 SPI |
| 2 | ||
| 3 | Required properties: | |
| 4 | - #address-cells: see spi-bus.txt | |
| 5 | - #size-cells: see spi-bus.txt | |
| 12f6dd86 | 6 | - compatible: should be "energymicro,efm32-spi" |
| 86f8973c UKK |
7 | - reg: Offset and length of the register set for the controller |
| 8 | - interrupts: pair specifying rx and tx irq | |
| 9 | - clocks: phandle to the spi clock | |
| 10 | - cs-gpios: see spi-bus.txt | |
| e2872090 AL |
11 | |
| 12 | Recommended properties : | |
| 10ed7e98 UKK |
13 | - energymicro,location: Value to write to the ROUTE register's LOCATION |
| 14 | bitfield to configure the pinmux for the device, see | |
| 15 | datasheet for values. | |
| 16 | If this property is not provided, keeping what is | |
| 17 | already configured in the hardware, so its either the | |
| 18 | reset default 0 or whatever the bootloader did. | |
| 86f8973c UKK |
19 | |
| 20 | Example: | |
| 21 | ||
| 22 | spi1: spi@0x4000c400 { /* USART1 */ | |
| 23 | #address-cells = <1>; | |
| 24 | #size-cells = <0>; | |
| 12f6dd86 | 25 | compatible = "energymicro,efm32-spi"; |
| 86f8973c UKK |
26 | reg = <0x4000c400 0x400>; |
| 27 | interrupts = <15 16>; | |
| 28 | clocks = <&cmu 20>; | |
| 29 | cs-gpios = <&gpio 51 1>; // D3 | |
| 10ed7e98 | 30 | energymicro,location = <1>; |
| 86f8973c UKK |
31 | status = "ok"; |
| 32 | ||
| 33 | ks8851@0 { | |
| 34 | compatible = "ks8851"; | |
| 35 | spi-max-frequency = <6000000>; | |
| 36 | reg = <0>; | |
| 37 | interrupt-parent = <&boardfpga>; | |
| 38 | interrupts = <4>; | |
| 39 | status = "ok"; | |
| 40 | }; | |
| 41 | }; |