BCM270X_DT: Add pi3-disable-wifi overlay

pi3-disable-wifi is a minimal overlay to disable the onboard WiFi.

Signed-off-by: Phil Elwell <[email protected]>

Author: Phil Elwell

arch/arm/boot/dts/overlays/Makefile

@@ -51,6 +51,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
 	mz61581.dtbo \
 	pi3-act-led.dtbo \
 	pi3-disable-bt.dtbo \
+	pi3-disable-wifi.dtbo \
 	pi3-miniuart-bt.dtbo \
 	piscreen.dtbo \
 	piscreen2r.dtbo \

arch/arm/boot/dts/overlays/README

@@ -800,6 +800,12 @@ Load:   dtoverlay=pi3-disable-bt
 Params: <None>
 
 
+Name:   pi3-disable-wifi
+Info:   Disable Pi3 onboard WiFi
+Load:   dtoverlay=pi3-disable-wifi
+Params: <None>
+
+
 Name:   pi3-miniuart-bt
 Info:   Switch Pi3 Bluetooth function to use the mini-UART (ttyS0) and restore
         UART0/ttyAMA0 over GPIOs 14 & 15. Note that this may reduce the maximum

arch/arm/boot/dts/overlays/pi3-disable-wifi-overlay.dts

@@ -0,0 +1,13 @@
+/dts-v1/;
+/plugin/;
+
+/{
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&mmc>;
+		__overlay__ {
+			status = "disabled";
+		};
+	};
+};