[PATCH v2 4/4] ARM: dts: bcm2837-rpi-3-b: add GPIO expander
From: baruch@tkos.co.il (Baruch Siach)
Date: 2018-01-11 19:44:27
Also in:
linux-devicetree, linux-gpio
Subsystem:
the rest · Maintainer:
Linus Torvalds
Add a description of the RPi3 GPIO expander that the VC4 firmware controls. Signed-off-by: Baruch Siach <baruch@tkos.co.il> --- 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 | 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..24555e8a43ec 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>; }; }; + + expgpio: gpio-expander { + 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 */
--
2.15.1