| Message ID | 20240301014203.2033844-3-chris.packham@alliedtelesis.co.nz (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | auxdisplay: 7 segment LED display | expand |
On Fri, Mar 01, 2024 at 02:42:01PM +1300, Chris Packham wrote: > Add bindings for a generic 7-segment LED display using GPIOs. ... > + segment-gpios: > + description: > + An array of GPIOs one per segment. The first GPIO corresponds to the A > + segment the last GPIO corresponds to the G segment. > + minItems: 7 > + maxItems: 7 As we discussed, put the ASCII art here to be sure everybody on the same page what 'a' - 'g' are and I would put 'dp' as well for the better understanding of the possible configurations (it doesn't mean you have to support it). ... Either way this will require an Ack by DT maintainers.
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..76af4bf4e9a6 --- /dev/null +++ b/Documentation/devicetree/bindings/auxdisplay/gpio-7-segment.yaml @@ -0,0 +1,42 @@ +# 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 last GPIO corresponds to the G segment. + minItems: 7 + maxItems: 7 + +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>; + };
Add bindings for a generic 7-segment LED display using GPIOs. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> --- Notes: Changes in v3: - Set maxItems: 7 - Expand description of segment-gpios property. - Use compatible = "gpio-7-segment" as suggested by Rob Changes in v2: - Use compatible = "generic-gpio-7seg" to keep checkpatch.pl happy .../bindings/auxdisplay/gpio-7-segment.yaml | 42 +++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 Documentation/devicetree/bindings/auxdisplay/gpio-7-segment.yaml