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Commit | Line | Data |
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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 | ||
4c9847b7 | 22 | spi1: spi@4000c400 { /* USART1 */ |
86f8973c UKK |
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 | |
32 | ks8851@0 { | |
33 | compatible = "ks8851"; | |
34 | spi-max-frequency = <6000000>; | |
35 | reg = <0>; | |
36 | interrupt-parent = <&boardfpga>; | |
37 | interrupts = <4>; | |
86f8973c UKK |
38 | }; |
39 | }; |