1 Broadcom BCM2835 auxiliary SPI1/2 controller
2
3 The BCM2835 contains two forms of SPI master controller, one known simply as
4 SPI0, and the other known as the "Universal SPI Master"; part of the
5 auxiliary block. This binding applies to the SPI1/2 controller.
6
7 Required 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 auxiliary 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
18 Example:
19
20 spi1@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
30 spi2@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 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.