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Haibo Chen c3b0bb15ef phy: phy-can-transceiver: default silent GPIO to high during probe ...

The silent pin of the CAN transceiver is active high, asserting it puts
the transceiver into silent (listen-only) mode where the transmitter is
disabled.

At probe time, and before the PHY is powered on, the transceiver should
default to silent mode. This is the correct and lower-power state: the
transceiver should not actively drive the CAN bus until the PHY is
explicitly powered on. Requesting the silent GPIO as GPIOD_OUT_LOW leaves
the transceiver in normal mode by default, which is both incorrect and
wastes power.

Request the silent GPIO as GPIOD_OUT_HIGH so the transceiver starts in
silent mode, and let the power_on/power_off callbacks manage the mode
afterwards.

Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Reviewed-by: Marc Kleine-Budde <mkl@pengutronix.de>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260730-can-share-silent-v1-1-63fd603f943d@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

2026-08-06 21:41:02 +05:30

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