mirror of
https://github.com/Qortal/Brooklyn.git
synced 2025-01-31 15:22:18 +00:00
68 lines
1.2 KiB
Plaintext
68 lines
1.2 KiB
Plaintext
/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>;
|
|
brcm,function = <1>; /* output */
|
|
};
|
|
};
|
|
};
|
|
|
|
fragment@1 {
|
|
target = <&spi1>;
|
|
__overlay__ {
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&spi1_pins &spi1_cs_pins>;
|
|
cs-gpios = <&gpio 18 1>;
|
|
status = "okay";
|
|
|
|
sc16is752: sc16is752@0 {
|
|
compatible = "nxp,sc16is752";
|
|
reg = <0>; /* CE0 */
|
|
clocks = <&sc16is752_clk>;
|
|
interrupt-parent = <&gpio>;
|
|
interrupts = <24 2>; /* IRQ_TYPE_EDGE_FALLING */
|
|
gpio-controller;
|
|
#gpio-cells = <2>;
|
|
spi-max-frequency = <4000000>;
|
|
};
|
|
};
|
|
};
|
|
|
|
fragment@2 {
|
|
target = <&aux>;
|
|
__overlay__ {
|
|
status = "okay";
|
|
};
|
|
};
|
|
|
|
fragment@3 {
|
|
target-path = "/";
|
|
__overlay__ {
|
|
sc16is752_clk: sc16is752_spi1_0_clk {
|
|
compatible = "fixed-clock";
|
|
#clock-cells = <0>;
|
|
clock-frequency = <14745600>;
|
|
};
|
|
};
|
|
};
|
|
|
|
__overrides__ {
|
|
int_pin = <&sc16is752>,"interrupts:0";
|
|
xtal = <&sc16is752_clk>,"clock-frequency:0";
|
|
};
|
|
};
|