diff options
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/nxp,pcf8575.yaml | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/nxp,pcf8575.yaml b/Documentation/devicetree/bindings/gpio/nxp,pcf8575.yaml index 3718103e966a..8bca574bb66d 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 |