diff options
| author | Philippe Schenker <philippe.schenker@toradex.com> | 2019-02-01 16:00:13 +0100 |
|---|---|---|
| committer | Philippe Schenker <philippe.schenker@toradex.com> | 2019-05-09 11:13:57 +0200 |
| commit | fe4c73c94f19ebca1233172fbadda6e0627edcf6 (patch) | |
| tree | ec3e2c55ddb3da7b5938253cb875a7c580bcb619 | |
| parent | af2f191e5278bb2510e7468c4b9c16c533f02035 (diff) | |
net: can: flexcan: Add pinmuxing in runtime_supsend
Due to the nature of CAN Tx/Rx pins have to be high when they are
idle. After boot, CAN is put into runtime_suspend state. When using
xceiver-supply in DT the power to the transceiver is turned off in this
state. The Tx/Rx pins are then causing backfeeding.
This patch adds selection of the sleep-state pins during
runtime_suspend, so someone is able to define another muxing
in this sate.
Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
| -rw-r--r-- | drivers/net/can/flexcan.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index f971d3432f9c..35bcf97e0ce1 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -1779,6 +1779,7 @@ static int __maybe_unused flexcan_runtime_suspend(struct device *device) struct flexcan_priv *priv = netdev_priv(dev); flexcan_clks_disable(priv); + pinctrl_pm_select_sleep_state(priv->dev); return 0; } @@ -1788,6 +1789,7 @@ static int __maybe_unused flexcan_runtime_resume(struct device *device) struct net_device *dev = dev_get_drvdata(device); struct flexcan_priv *priv = netdev_priv(dev); + pinctrl_pm_select_default_state(priv->dev); flexcan_clks_enable(priv); return 0; |