diff options
Diffstat (limited to 'Documentation/devicetree/bindings/gpio/nxp,pcf8575.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/nxp,pcf8575.yaml | 63 |
1 files changed, 50 insertions, 13 deletions
diff --git a/Documentation/devicetree/bindings/gpio/nxp,pcf8575.yaml b/Documentation/devicetree/bindings/gpio/nxp,pcf8575.yaml index 3718103e966a..5a6ecaa7b44b 100644 --- a/Documentation/devicetree/bindings/gpio/nxp,pcf8575.yaml +++ b/Documentation/devicetree/bindings/gpio/nxp,pcf8575.yaml @@ -73,6 +73,43 @@ properties: wakeup-source: true + reset-gpios: + maxItems: 1 + description: + GPIO controlling the (reset active LOW) RESET# pin. + + The active polarity of the GPIO must translate to the low state of the + RESET# pin on the IC, i.e. if a GPIO is directly routed to the RESET# pin + without any inverter, GPIO_ACTIVE_LOW is expected. + + Performing a reset makes all lines initialized to their input (pulled-up) + state. + +allOf: + - if: + properties: + compatible: + not: + contains: + enum: + - nxp,pca9670 + - nxp,pca9671 + - nxp,pca9672 + - nxp,pca9673 + then: + properties: + reset-gpios: false + + # lines-initial-states XOR reset-gpios + # Performing a reset reinitializes all lines to a known state which + # may not match passed lines-initial-states + - if: + required: + - lines-initial-states + then: + properties: + reset-gpios: false + patternProperties: "^(.+-hog(-[0-9]+)?)$": type: object @@ -91,17 +128,17 @@ additionalProperties: false examples: - | i2c { - #address-cells = <1>; - #size-cells = <0>; - - pcf8575: gpio@20 { - compatible = "nxp,pcf8575"; - reg = <0x20>; - interrupt-parent = <&irqpin2>; - interrupts = <3 0>; - gpio-controller; - #gpio-cells = <2>; - interrupt-controller; - #interrupt-cells = <2>; - }; + #address-cells = <1>; + #size-cells = <0>; + + gpio@20 { + compatible = "nxp,pcf8575"; + reg = <0x20>; + interrupt-parent = <&irqpin2>; + interrupts = <3 0>; + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; + }; }; |