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Overlays: add overlay for rak-6421 WisBlock hat #7142

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Overlays: add overlay for rak-6421 WisBlock hat #7142

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1 change: 1 addition & 0 deletions arch/arm/boot/dts/overlays/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -234,6 +234,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
pwm1.dtbo \
qca7000.dtbo \
qca7000-uart0.dtbo \
rak-6421.dtbo \
ramoops.dtbo \
ramoops-pi4.dtbo \
rootmaster.dtbo \
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9 changes: 9 additions & 0 deletions arch/arm/boot/dts/overlays/README
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Expand Up @@ -4273,6 +4273,15 @@ Params: baudrate Set the baudrate for the UART (default
"115200")


Name: rak-6421
Info: RAK6421 Meshtastic WisHat
This board allows connecting RAK WisBlock radios and sensors to
the Raspberry Pi. Consists of two SPI radio ports and 4 i2c
sensor slots.
Load: dtoverlay=rak-6421
Params: <None>


Name: ramoops
Info: Enable the preservation of crash logs across a reboot. With
systemd-pstore enabled (as it is on Raspberry Pi OS) the crash logs
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33 changes: 33 additions & 0 deletions arch/arm/boot/dts/overlays/rak-6421-overlay.dts
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@@ -0,0 +1,33 @@
/*
* Device Tree overlay for RAK 6421 Meshtastic HAT+
*
*/

/dts-v1/;
/plugin/;

/ {
compatible = "brcm,bcm2835";


i2c_frag: fragment@0 {
target = <&i2c_arm>;
__overlay__ {
status = "okay";
};
};
fragment@1 {
target = <&spi0_cs_pins>;
frag1: __overlay__ {
brcm,pins = <8 7>;
};
};

fragment@2 {
target = <&spi0>;
frag2: __overlay__ {
cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
status = "okay";
};
};
};
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