Add a description of the RPi3 GPIO expander that the VC4 firmware controls.
Signed-off-by: Baruch Siach <baruch@xxxxxxxxxx>
---
arch/arm/boot/dts/bcm2837-rpi-3-b.dts | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
index b44b3b5af00d..09dca48da2bd 100644
--- a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+++ b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
@@ -23,6 +23,16 @@
gpios = <&gpio 47 0>;
};
};
+
+ soc {
+ expgpio: expgpio {
+ compatible = "brcm,bcm2835-expgpio";
+ gpio-controller;
+ #gpio-cells = <2>;
+ firmware = <&firmware>;
+ status = "okay";
+ };
+ };
};
/* uart0 communicates with the BT module */
--
2.15.1
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