diff options
| author |   Sean Nyekjaer <sean@geanix.com> | 2019-12-06 16:29:22 +0100 |
|---|---|---|
| committer |   Marc Kleine-Budde <mkl@pengutronix.de> | 2019-12-08 12:22:01 +0100 |
| commit | 60552253e29c8860ee5bf1e6064591b0917c0394 (patch) | |
| tree | 8ce308b2e14a2281ae9e4b91d9e5787d1af848c6 /drivers/net/can | |
| parent | can: flexcan: poll MCR_LPM_ACK instead of GPR ACK for stop mode acknowledgment (diff) | |
| download | linux-dev-60552253e29c8860ee5bf1e6064591b0917c0394.tar.xz linux-dev-60552253e29c8860ee5bf1e6064591b0917c0394.zip | |
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>
Diffstat (limited to 'drivers/net/can')
| -rw-r--r-- | drivers/net/can/m_can/tcan4x5x.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/can/m_can/tcan4x5x.c b/drivers/net/can/m_can/tcan4x5x.c index 3db619209fe1..d5d4bfa9c8fd 100644 --- a/drivers/net/can/m_can/tcan4x5x.c +++ b/drivers/net/can/m_can/tcan4x5x.c @@ -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); |