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| author | Chris Packham <chris.packham@alliedtelesis.co.nz> | 2024-03-08 08:50:52 +1300 |
|---|---|---|
| committer | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2024-03-08 14:15:47 +0200 |
| commit | 4664b0bbb69ce61a913336a1f093383a4aa43824 (patch) | |
| tree | 2c29701f5c3cfd92b2ee2b95123dc5134aceab9c | |
| parent | 899383f9ecf59881a0f43fbf7d74b26bd1e1a16f (diff) | |
dt-bindings: auxdisplay: Add bindings for generic 7-segment LED
Add bindings for a generic 7-segment LED display using GPIOs.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
| -rw-r--r-- | Documentation/devicetree/bindings/auxdisplay/gpio-7-segment.yaml | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/auxdisplay/gpio-7-segment.yaml b/Documentation/devicetree/bindings/auxdisplay/gpio-7-segment.yaml new file mode 100644 index 000000000000..328954893c64 --- /dev/null +++ b/Documentation/devicetree/bindings/auxdisplay/gpio-7-segment.yaml @@ -0,0 +1,55 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/auxdisplay/gpio-7-segment.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: GPIO based LED segment display + +maintainers: + - Chris Packham <chris.packham@alliedtelesis.co.nz> + +properties: + compatible: + const: gpio-7-segment + + segment-gpios: + description: | + An array of GPIOs one per segment. The first GPIO corresponds to the A + segment, the seventh GPIO corresponds to the G segment. Some LED blocks + also have a decimal point which can be specified as an optional eighth + segment. + + -a- + | | + f b + | | + -g- + | | + e c + | | + -d- dp + + minItems: 7 + maxItems: 8 + +required: + - segment-gpios + +additionalProperties: false + +examples: + - | + + #include <dt-bindings/gpio/gpio.h> + + led-7seg { + compatible = "gpio-7-segment"; + segment-gpios = <&gpio 0 GPIO_ACTIVE_LOW>, + <&gpio 1 GPIO_ACTIVE_LOW>, + <&gpio 2 GPIO_ACTIVE_LOW>, + <&gpio 3 GPIO_ACTIVE_LOW>, + <&gpio 4 GPIO_ACTIVE_LOW>, + <&gpio 5 GPIO_ACTIVE_LOW>, + <&gpio 6 GPIO_ACTIVE_LOW>; + }; |