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author | Rob Herring <robh@kernel.org> | 2021-05-26 21:48:36 +0300 |
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committer | Rob Herring <robh@kernel.org> | 2021-06-02 02:20:06 +0300 |
commit | 9b358af7c8186678677102e8c6cc472e7c00c0c0 (patch) | |
tree | 455025cdd8f8ca5abcddaa1b27916ee204785305 /Documentation/devicetree/bindings/mux/gpio-mux.yaml | |
parent | f743c41d00bea01bf3e5c79b1ae5dcebca8f8daa (diff) | |
download | linux-9b358af7c8186678677102e8c6cc472e7c00c0c0.tar.xz |
dt-bindings: mux: Convert mux controller bindings to schema
Convert the mux controller bindings to DT schema.
Cc: Peter Rosin <peda@axentia.se>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Wolfram Sang <wsa@kernel.org>
Acked-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210526184839.2937899-4-robh@kernel.org
Diffstat (limited to 'Documentation/devicetree/bindings/mux/gpio-mux.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/mux/gpio-mux.yaml | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mux/gpio-mux.yaml b/Documentation/devicetree/bindings/mux/gpio-mux.yaml new file mode 100644 index 000000000000..0a7c8d64981a --- /dev/null +++ b/Documentation/devicetree/bindings/mux/gpio-mux.yaml @@ -0,0 +1,92 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mux/gpio-mux.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: GPIO-based multiplexer controller bindings + +maintainers: + - Peter Rosin <peda@axentia.se> + +description: |+ + Define what GPIO pins are used to control a multiplexer. Or several + multiplexers, if the same pins control more than one multiplexer. + + The multiplexer state is defined as the number represented by the + multiplexer GPIO pins, where the first pin is the least significant + bit. An active pin is a binary 1, an inactive pin is a binary 0. + +properties: + compatible: + const: gpio-mux + + mux-gpios: + description: + List of gpios used to control the multiplexer, least significant bit first. + + '#mux-control-cells': + const: 0 + + idle-state: + default: -1 + +required: + - compatible + - mux-gpios + - "#mux-control-cells" + +additionalProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + + mux: mux-controller { + compatible = "gpio-mux"; + #mux-control-cells = <0>; + + mux-gpios = <&pioA 0 GPIO_ACTIVE_HIGH>, + <&pioA 1 GPIO_ACTIVE_HIGH>; + }; + + adc-mux { + compatible = "io-channel-mux"; + io-channels = <&adc 0>; + io-channel-names = "parent"; + + mux-controls = <&mux>; + + channels = "sync-1", "in", "out", "sync-2"; + }; + + i2c-mux { + compatible = "i2c-mux"; + i2c-parent = <&i2c1>; + + mux-controls = <&mux>; + + #address-cells = <1>; + #size-cells = <0>; + + i2c@0 { + reg = <0>; + #address-cells = <1>; + #size-cells = <0>; + + ssd1307: oled@3c { + reg = <0x3c>; + }; + }; + + i2c@3 { + reg = <3>; + #address-cells = <1>; + #size-cells = <0>; + + pca9555: pca9555@20 { + reg = <0x20>; + }; + }; + }; +... |