[PATCH v3 4/4] ARM: dts: bcm2837-rpi-3-b: add GPIO expander
From: Baruch Siach <baruch@tkos.co.il>
Date: 2018-01-16 12:45:10
Also in:
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> --- 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 | 16 ++++++++++++++++ 1 file changed, 16 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..8cd93425ffe3 100644
--- a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+++ b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts@@ -23,6 +23,22 @@ 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