Add a description of the RPi3 GPIO expander that the VC4 firmware controls.
Acked-by: Stefan Wahren <stefan.wahren@xxxxxxxx>
Signed-off-by: Baruch Siach <baruch@xxxxxxxxxx>
---
v4:
* Move the gpio node under the firmware node
* Rename the gpio node to plain 'gpio'
* Add Stefan's ack
v3:
* List GPIO names one per line.
v2:
* Move GPIO expander node out of the soc container
* Rename compatible string
* Add gpio-line-names property
---
arch/arm/boot/dts/bcm2837-rpi-3-b.dts | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
index 3e4ed7c5b0b3..aab904231580 100644
--- a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+++ b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
@@ -25,6 +25,24 @@
};
};
+&firmware {
+ expgpio: gpio {
+ compatible = "raspberrypi,firmware-gpio";
+ gpio-controller;
+ #gpio-cells = <2>;
+ firmware = <&firmware>;
+ gpio-line-names = "BT_ON",
+ "WL_ON",
+ "STATUS_LED",
+ "LAN_RUN",
+ "HPD_N",
+ "CAM_GPIO0",
+ "CAM_GPIO1",
+ "PWR_LOW_N";
+ status = "okay";
+ };
+};
+
/* uart0 communicates with the BT module */
&uart0 {
pinctrl-names = "default";
--
2.15.1
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