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can: flexcan: invoke flexcan_chip_freeze() to enter freeze mode

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commit c63820045e2000f05657467a08715c18c9f490d9 upstream.

Invoke flexcan_chip_freeze() to enter freeze mode, since need poll
freeze mode acknowledge.

Fixes: e955cead03117 ("CAN: Add Flexcan CAN controller driver")
Link: https://lore.kernel.org/r/20210218110037.16591-4-qiangqing.zhang@nxp.com
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Joakim Zhang 2021-02-18 19:00:37 +08:00 committed by Greg Kroah-Hartman
parent e0eccdfc5c
commit a7e187a87e
1 changed files with 7 additions and 5 deletions
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12
drivers/net/can/flexcan.c
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@ -1057,10 +1057,13 @@ static int flexcan_chip_start(struct net_device *dev)
flexcan_set_bittiming(dev);
/* set freeze, halt */
err = flexcan_chip_freeze(priv);
if (err)
goto out_chip_disable;
/* MCR
*
* enable freeze
* halt now
* only supervisor access
* enable warning int
* enable individual RX masking
@ -1069,9 +1072,8 @@ static int flexcan_chip_start(struct net_device *dev)
*/
reg_mcr = priv->read(&regs->mcr);
reg_mcr &= ~FLEXCAN_MCR_MAXMB(0xff);
reg_mcr |= FLEXCAN_MCR_FRZ | FLEXCAN_MCR_HALT | FLEXCAN_MCR_SUPV |
FLEXCAN_MCR_WRN_EN | FLEXCAN_MCR_IRMQ | FLEXCAN_MCR_IDAM_C |
FLEXCAN_MCR_MAXMB(priv->tx_mb_idx);
reg_mcr |= FLEXCAN_MCR_SUPV | FLEXCAN_MCR_WRN_EN | FLEXCAN_MCR_IRMQ |
FLEXCAN_MCR_IDAM_C | FLEXCAN_MCR_MAXMB(priv->tx_mb_idx);
/* MCR
*