[RFC PATCH v2 4/4] sensehat: Add device tree overlay (do not merge)

[Charles Mirabile <cmirabil@redhat.com>]

This patch is an RFC. The overlay included here is suitable for the
Sense HAT but we are not sure where overlays like this should go, or if we
should even include it, because the Raspberry Pi kernel tree already
includes that device tree blob that this was based on and most
distributions for the Raspberry Pi include those blobs.

The overlay is just in the root of the source tree since we did not know
where to put it so this patch should not be merged in this state.

Signed-off-by: Charles Mirabile <cmirabil@redhat.com>
Signed-off-by: Mwesigwa Guma <mguma@redhat.com>
Signed-off-by: Joel Savitz <jsavitz@redhat.com>
---
 sensehat.dtbs | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 sensehat.dtbs

diff --git a/sensehat.dtbs b/sensehat.dtbs
new file mode 100644
index 000000000000..3f1c12c8f75f
--- /dev/null
+++ b/sensehat.dtbs
@@ -0,0 +1,51 @@
+/dts-v1/;
+
+/ {
+	compatible = "brcm,bcm2835";
+
+	fragment@0 {
+		target = <0xffffffff>;
+
+		__overlay__ {
+			#address-cells = <0x01>;
+			#size-cells = <0x00>;
+			status = "okay";
+
+			sensehat@46 {
+				compatible = "raspberrypi,sensehat";
+				reg = <0x46>;
+				keys-int-gpios = <0xffffffff 0x17 0x01>;
+				status = "okay";
+			};
+
+			lsm9ds1-magn@1c {
+				compatible = "st,lsm9ds1-magn";
+				reg = <0x1c>;
+				status = "okay";
+			};
+
+			lsm9ds1-accel6a {
+				compatible = "st,lsm9ds1-accel";
+				reg = <0x6a>;
+				status = "okay";
+			};
+
+			lps25h-press@5c {
+				compatible = "st,lps25h-press";
+				reg = <0x5c>;
+				status = "okay";
+			};
+
+			hts221-humid@5f {
+				compatible = "st,hts221-humid\0st,hts221";
+				reg = <0x5f>;
+				status = "okay";
+			};
+		};
+	};
+
+	__fixups__ {
+		i2c1 = "/fragment@0:target:0";
+		gpio = "/fragment@0/__overlay__/sensehat@46:keys-int-gpios:0";
+	};
+};
-- 
2.27.0