1Broadcom BCM2835 auxiliar SPI1/2 controller 2 3The BCM2835 contains two forms of SPI master controller, one known simply as 4SPI0, and the other known as the "Universal SPI Master"; part of the 5auxiliary block. This binding applies to the SPI1/2 controller. 6 7Required properties: 8- compatible: Should be "brcm,bcm2835-aux-spi". 9- reg: Should contain register location and length for the spi block 10- interrupts: Should contain shared interrupt of the aux block 11- clocks: The clock feeding the SPI controller - needs to 12 point to the auxiliar clock driver of the bcm2835, 13 as this clock will enable the output gate for the specific 14 clock. 15- cs-gpios: the cs-gpios (native cs is NOT supported) 16 see also spi-bus.txt 17 18Example: 19 20spi1@7e215080 { 21 compatible = "brcm,bcm2835-aux-spi"; 22 reg = <0x7e215080 0x40>; 23 interrupts = <1 29>; 24 clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI1>; 25 #address-cells = <1>; 26 #size-cells = <0>; 27 cs-gpios = <&gpio 18>, <&gpio 17>, <&gpio 16>; 28}; 29 30spi2@7e2150c0 { 31 compatible = "brcm,bcm2835-aux-spi"; 32 reg = <0x7e2150c0 0x40>; 33 interrupts = <1 29>; 34 clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI2>; 35 #address-cells = <1>; 36 #size-cells = <0>; 37 cs-gpios = <&gpio 43>, <&gpio 44>, <&gpio 45>; 38}; 39