Commit c6382004 authored by Joakim Zhang's avatar Joakim Zhang Committed by Marc Kleine-Budde
Browse files

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

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

Fixes: e955cead ("CAN: Add Flexcan CAN controller driver")
Link: https://lore.kernel.org/r/20210218110037.16591-4-qiangqing.zhang@nxp.com


Signed-off-by: default avatarJoakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent ec15e27c

drivers/net/can/flexcan.c

+7 −5
Original line number Diff line number Diff line
@@ -1480,10 +1480,13 @@ 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
@@ -1492,9 +1495,8 @@ 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

	 *