Commit 60552253 authored Dec 06, 2019 by Sean Nyekjaer Committed by Marc Kleine-Budde Dec 08, 2019

can: m_can: tcan4x5x: add required delay after reset



According to section "8.3.8 RST Pin" in the datasheet we are required to
wait >700us after the device is reset.

Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Acked-by: Dan Murphy <dmurphy@ti.com>
Cc: linux-stable <stable@vger.kernel.org> # >= v5.4
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

parent 048e3a34

drivers/net/can/m_can/tcan4x5x.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -354,6 +354,8 @@ static int tcan4x5x_parse_config(struct m_can_classdev *cdev)
		if (IS_ERR(tcan4x5x->reset_gpio))
		tcan4x5x->reset_gpio = NULL;

		usleep_range(700, 1000);

		tcan4x5x->device_state_gpio = devm_gpiod_get_optional(cdev->dev,
		"device-state",
		GPIOD_IN);

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