tree 134a557b0285497dfc3f6a3901c4e0b5b026a450
parent b7603d080ffcf8689ec91ca300caf84d8dbed317
author Joakim Zhang <qiangqing.zhang@nxp.com> 1575459374 +0000
committer Marc Kleine-Budde <mkl@pengutronix.de> 1575804095 +0100

can: flexcan: poll MCR_LPM_ACK instead of GPR ACK for stop mode acknowledgment

Stop Mode is entered when Stop Mode is requested at chip level and
MCR[LPM_ACK] is asserted by the FlexCAN.

Double check with IP owner, the MCR[LPM_ACK] bit should be polled for
stop mode acknowledgment, not the acknowledgment from chip level which
is used to gate flexcan clocks.

This patch depends on:

    b7603d080ffc ("can: flexcan: add low power enter/exit acknowledgment helper")

Fixes: 5f186c257fa4 (can: flexcan: fix stop mode acknowledgment)
Tested-by: Sean Nyekjaer <sean@geanix.com>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Cc: linux-stable <stable@vger.kernel.org> # >= v5.0
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>