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|
/dts-v1/;
/plugin/;
/ {
compatible = "brcm,bcm2835";
fragment@0 {
target = <&gpio>;
__overlay__ {
spi1_pins: spi1_pins {
brcm,pins = <19 20 21>;
brcm,function = <3>; /* alt4 */
};
spi1_cs_pins: spi1_cs_pins {
brcm,pins = <18 17 16>;
brcm,function = <1>; /* output */
};
};
};
fragment@1 {
target = <&spi1>;
frag1: __overlay__ {
/* needed to avoid dtc warning */
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&spi1_pins &spi1_cs_pins>;
cs-gpios = <&gpio 18 1>, <&gpio 17 1>, <&gpio 16 1>;
status = "okay";
spidev1_0: spidev@0 {
compatible = "spidev";
reg = <0>; /* CE0 */
#address-cells = <1>;
#size-cells = <0>;
spi-max-frequency = <125000000>;
status = "okay";
};
spidev1_1: spidev@1 {
compatible = "spidev";
reg = <1>; /* CE1 */
#address-cells = <1>;
#size-cells = <0>;
spi-max-frequency = <125000000>;
status = "okay";
};
spidev1_2: spidev@2 {
compatible = "spidev";
reg = <2>; /* CE2 */
#address-cells = <1>;
#size-cells = <0>;
spi-max-frequency = <125000000>;
status = "okay";
};
};
};
fragment@2 {
target = <&aux>;
__overlay__ {
status = "okay";
};
};
__overrides__ {
cs0_pin = <&spi1_cs_pins>,"brcm,pins:0",
<&frag1>,"cs-gpios:4";
cs1_pin = <&spi1_cs_pins>,"brcm,pins:4",
<&frag1>,"cs-gpios:16";
cs2_pin = <&spi1_cs_pins>,"brcm,pins:8",
<&frag1>,"cs-gpios:28";
cs0_spidev = <&spidev1_0>,"status";
cs1_spidev = <&spidev1_1>,"status";
cs2_spidev = <&spidev1_2>,"status";
};
};
|
