[PATCH linux v1 1/4] Documentation: dt-bindings: Document bindings for seven segment display support
From: Jaghathiswari Rankappagounder Natarajan <hidden>
Date: 2016-12-14 07:56:08
Also in:
linux-devicetree, lkml, openbmc
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
This binding provides interface for adding clock, data and clear signal GPIO lines to control seven segment display. Signed-off-by: Jaghathiswari Rankappagounder Natarajan <redacted> --- .../devicetree/bindings/misc/seven-seg-gpio.txt | 27 ++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 Documentation/devicetree/bindings/misc/seven-seg-gpio.txt
diff --git a/Documentation/devicetree/bindings/misc/seven-seg-gpio.txt b/Documentation/devicetree/bindings/misc/seven-seg-gpio.txt
new file mode 100644
index 0000000..9a4e255
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/seven-seg-gpio.txt@@ -0,0 +1,27 @@ +This binding defines interface to add clock, data and clear GPIO lines required +for seven segment display support. + +Required properties: +- compatible : should be "seven-seg-gpio-dev". +- clock-gpios : Should specify the GPIO pin connected to the Clock line on the + hardware. +- data-gpios : Should specify the GPIO pin connected to Data line on the + hardware. +- clear-gpios : Should specify the GPIO pin connected to Clear line on the + hardware. + +Optional properties: +- refresh-interval-ms : The interval at which to refresh the display. + If this property is not present, the default value is 1000. + +Examples: + +#include <dt-bindings/gpio/gpio.h> + +seven-seg-disp { + compatible = "seven-seg-gpio-dev"; + refresh-interval-ms = "1000"; + clock-gpios = <&gpio 0 GPIO_ACTIVE_LOW>; + data-gpios = <&gpio 1 GPIO_ACTIVE_HIGH>; + clear-gpios = <&gpio 2 GPIO_ACTIVE_HIGH>; +}; --
2.8.0.rc3.226.g39d4020