Add device tree overlay for Coral Boards, compile.
* Adds device tree overlay (compiled and source) for both platforms.
* RPi is expected to not need this (included on HAT EEPROM).
* Coral boards can add the dtbo to their overlays.txt to load on boot.
Change-Id: Ibc68008b24537205182db62aa40bdd6e335a6564
diff --git a/coral-enviro-devicetree/README b/coral-enviro-devicetree/README
index fc73f44..aa96282 100644
--- a/coral-enviro-devicetree/README
+++ b/coral-enviro-devicetree/README
@@ -1,11 +1,24 @@
This device tree overlay is provided to enable the functionality of the Coral
-Environmental Sensor Board. It is already included on the HAT EEPROM included
-with the board.
+Environmental Sensor Board.
+For Raspberry Pi platforms:
+
+The included EEPROM is already flashed with this overlay. No additional steps are needed.
If customization of the blob is desired, dtc is used to compile the overlay:
-dtc -@ -I dts -O dtb -o coral-enviro-board-overlay.dtbo coral-enviro-board-overlay.dts
+dtc -@ -I dts -O dtb -o coral-enviro-board.dtbo coral-enviro-board.dts
It is also possible to overwrite the EEPROM. In order to do this:
1) Short JP1 (a solder bridge) to unlock the EEPROM.
2) Enable I2C0 access (add dtparam=i2c0=on to config.txt in the boot partiton).
3) Rebuild and flash following instructions at https://github.com/raspberrypi/hats/tree/master/eepromutils
+
+
+For Coral platforms:
+
+The overlay can be put in the boot folder in order to automatically load on boot.
+Once added to /boot, modify overlays.txt to add coral-enviro-board
+(e.g overlays=coral-enviro-board).
+
+If customization of the blob is desired, dtc is used to compile the overlay:
+dtc -@ -I dts -O dtb -o coral-enviro-board.dtbo coral-enviro-board.dts
+
diff --git a/coral-enviro-devicetree/coral-enviro-board.dtbo b/coral-enviro-devicetree/coral-enviro-board.dtbo
new file mode 100644
index 0000000..500600d
--- /dev/null
+++ b/coral-enviro-devicetree/coral-enviro-board.dtbo
Binary files differ
diff --git a/coral-enviro-devicetree/coral-enviro-board-overlay.dts b/coral-enviro-devicetree/coral-enviro-board.dts
similarity index 79%
copy from coral-enviro-devicetree/coral-enviro-board-overlay.dts
copy to coral-enviro-devicetree/coral-enviro-board.dts
index 7a460bc..1a305de 100644
--- a/coral-enviro-devicetree/coral-enviro-board-overlay.dts
+++ b/coral-enviro-devicetree/coral-enviro-board.dts
@@ -1,5 +1,5 @@
/*
- * coral-enviro-board-overlay.dts
+ * coral-enviro-board.dts
* Device Tree Overlay to support Coral Environmental Sensor Board
*
* Copyright (C) 2019 Google LLC
@@ -20,10 +20,10 @@
/plugin/;
/ {
- compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+ compatible = "fsl,imx8mq-phanbell", "fsl,imx8mq";
fragment@0 {
- target = <&i2c_arm>;
+ target-path = "/i2c@30a30000";
__overlay__ {
#address-cells = <1>;
#size-cells = <0>;
@@ -32,9 +32,6 @@
opt3002@44 {
compatible = "ti,opt3001";
reg = <0x45>; /* address */
- interrupt-parent = <&gpio>;
- interrupts = <27 2>; /* IRQ_TYPE_EDGE_FALLING */
- #gpio-cells = <2>;
};
hdc2010@40 {
@@ -60,12 +57,5 @@
};
};
};
-
- fragment@1 {
- target = <&spi0>;
- __overlay__ {
- status = "okay";
- };
- };
};
diff --git a/coral-enviro-devicetree/rpi-enviro-board.dtbo b/coral-enviro-devicetree/rpi-enviro-board.dtbo
new file mode 100644
index 0000000..3ba31df
--- /dev/null
+++ b/coral-enviro-devicetree/rpi-enviro-board.dtbo
Binary files differ
diff --git a/coral-enviro-devicetree/coral-enviro-board-overlay.dts b/coral-enviro-devicetree/rpi-enviro-board.dts
similarity index 97%
rename from coral-enviro-devicetree/coral-enviro-board-overlay.dts
rename to coral-enviro-devicetree/rpi-enviro-board.dts
index 7a460bc..821733d 100644
--- a/coral-enviro-devicetree/coral-enviro-board-overlay.dts
+++ b/coral-enviro-devicetree/rpi-enviro-board.dts
@@ -1,5 +1,5 @@
/*
- * coral-enviro-board-overlay.dts
+ * rpi-enviro-board.dts
* Device Tree Overlay to support Coral Environmental Sensor Board
*
* Copyright (C) 2019 Google LLC
