[PATCH 4/4] ARM: dts: da850-evm: add the UI expander node
From: Bartosz Golaszewski <hidden>
Date: 2017-02-16 18:15:50
Also in:
linux-devicetree, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
If we're using the UI board and want vpif capture, we need to select the video capture functionality by driving the sel_c pin low on the tca6416 expander and sel_a & sel_b pins high. Do it statically by hogging relevant GPIOs in the device tree. Signed-off-by: Bartosz Golaszewski <redacted> --- arch/arm/boot/dts/da850-evm.dts | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+)
diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts
index b549861..a90c764 100644
--- a/arch/arm/boot/dts/da850-evm.dts
+++ b/arch/arm/boot/dts/da850-evm.dts@@ -9,6 +9,7 @@ */ /dts-v1/; #include "da850.dtsi" +#include <dt-bindings/gpio/gpio.h> / { compatible = "ti,da850-evm", "ti,da850";
@@ -78,7 +79,33 @@ DRVDD-supply = <&vbat>; DVDD-supply = <&vbat>; }; + ui_expander: tca6416 at 20 { + compatible = "ti,tca6416"; + reg = <0x20>; + gpio-controller; + #gpio-cells = <2>; + sel_a { + gpio-hog; + gpios = <7 GPIO_ACTIVE_HIGH>; + output-high; + line-name = "sel_a"; + }; + + sel_b { + gpio-hog; + gpios = <6 GPIO_ACTIVE_HIGH>; + output-high; + line-name = "sel_b"; + }; + + sel_c { + gpio-hog; + gpios = <5 GPIO_ACTIVE_HIGH>; + output-low; + line-name = "sel_c"; + }; + }; }; wdt: wdt at 21000 { status = "okay";
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2.9.3