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dt-bindings: can: tcan4x5x: Document the ti,nwkrq-voltage-vio option

The nWKRQ pin supports an output voltage of either the internal reference
voltage (3.6V) or the reference voltage of
the digital interface 0-6V (VIO).
Add the devicetree option ti,nwkrq-voltage-vio to set it to VIO.

If this property is omitted the reset default, the internal reference
voltage, is used.

Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://patch.msgid.link/20241114-tcan-wkrqv-v5-1-a2d50833ed71@geanix.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

authored by

Sean Nyekjaer and committed by
Marc Kleine-Budde 64955679 79195755

+8
+8
Documentation/devicetree/bindings/net/can/ti,tcan4x5x.yaml
··· 110 110 Must be half or less of "clocks" frequency. 111 111 maximum: 18000000 112 112 113 + ti,nwkrq-voltage-vio: 114 + type: boolean 115 + description: 116 + nWKRQ Pin GPO buffer voltage configuration. 117 + Set nWKRQ to use VIO voltage rail. 118 + When not set nWKRQ will use internal voltage rail. 119 + 113 120 wakeup-source: 114 121 $ref: /schemas/types.yaml#/definitions/flag 115 122 description: ··· 170 163 device-state-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>; 171 164 device-wake-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>; 172 165 reset-gpios = <&gpio1 27 GPIO_ACTIVE_HIGH>; 166 + ti,nwkrq-voltage-vio; 173 167 wakeup-source; 174 168 }; 175 169 };