1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
/dts-v1/;
/plugin/;
/ {
compatible = "brcm,bcm2835";
fragment@0 {
target = <&gpio>;
__overlay__ {
spi2_pins: spi2_pins {
brcm,pins = <40 41 42>;
brcm,function = <3>; /* alt4 */
};
spi2_cs_pins: spi2_cs_pins {
brcm,pins = <43 44>;
brcm,function = <1>; /* output */
};
};
};
fragment@1 {
target = <&spi2>;
frag1: __overlay__ {
/* needed to avoid dtc warning */
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&spi2_pins &spi2_cs_pins>;
cs-gpios = <&gpio 43 1>, <&gpio 44 1>;
status = "okay";
spidev2_0: spidev@0 {
compatible = "spidev";
reg = <0>; /* CE0 */
#address-cells = <1>;
#size-cells = <0>;
spi-max-frequency = <125000000>;
status = "okay";
};
spidev2_1: spidev@1 {
compatible = "spidev";
reg = <1>; /* CE1 */
#address-cells = <1>;
#size-cells = <0>;
spi-max-frequency = <125000000>;
status = "okay";
};
};
};
fragment@2 {
target = <&aux>;
__overlay__ {
status = "okay";
};
};
__overrides__ {
cs0_pin = <&spi2_cs_pins>,"brcm,pins:0",
<&frag1>,"cs-gpios:4";
cs1_pin = <&spi2_cs_pins>,"brcm,pins:4",
<&frag1>,"cs-gpios:16";
cs0_spidev = <&spidev2_0>,"status";
cs1_spidev = <&spidev2_1>,"status";
};
};
|
