1* Energy Micro EFM32 SPI 2 3Required properties: 4- #address-cells: see spi-bus.txt 5- #size-cells: see spi-bus.txt 6- compatible: should be "energymicro,efm32-spi" 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 11 12Recommended properties : 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. 19 20Example: 21 22spi1: spi@4000c400 { /* USART1 */ 23 #address-cells = <1>; 24 #size-cells = <0>; 25 compatible = "energymicro,efm32-spi"; 26 reg = <0x4000c400 0x400>; 27 interrupts = <15 16>; 28 clocks = <&cmu 20>; 29 cs-gpios = <&gpio 51 1>; // D3 30 energymicro,location = <1>; 31 32 ks8851@0 { 33 compatible = "ks8851"; 34 spi-max-frequency = <6000000>; 35 reg = <0>; 36 interrupt-parent = <&boardfpga>; 37 interrupts = <4>; 38 }; 39}; 40