From 5b12933de4e76ec164031c18ce8e0904abf530d7 Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Mon, 23 May 2022 17:18:33 +0200 Subject: [PATCH] can: m_can: m_can_chip_config(): actually enable internal timestamping In commit df06fd678260 ("can: m_can: m_can_chip_config(): enable and configure internal timestamps") the timestamping in the m_can core should be enabled. In peripheral mode, the RX'ed CAN frames, TX compete frames and error events are sorted by the timestamp. The above mentioned commit however forgot to enable the timestamping. Add the missing bits to enable the timestamp counter to the write of the Timestamp Counter Configuration register. Link: https://lore.kernel.org/all/20220612212708.4081756-1-mkl@pengutronix.de Fixes: df06fd678260 ("can: m_can: m_can_chip_config(): enable and configure internal timestamps") Cc: # 5.13 Cc: Torin Cooper-Bennun Reviewed-by: Chandrasekar Ramakrishnan Signed-off-by: Marc Kleine-Budde --- drivers/net/can/m_can/m_can.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c index 5d0c82d..03a22d4 100644 --- a/drivers/net/can/m_can/m_can.c +++ b/drivers/net/can/m_can/m_can.c @@ -1351,7 +1351,9 @@ static void m_can_chip_config(struct net_device *dev) /* enable internal timestamp generation, with a prescalar of 16. The * prescalar is applied to the nominal bit timing */ - m_can_write(cdev, M_CAN_TSCC, FIELD_PREP(TSCC_TCP_MASK, 0xf)); + m_can_write(cdev, M_CAN_TSCC, + FIELD_PREP(TSCC_TCP_MASK, 0xf) | + FIELD_PREP(TSCC_TSS_MASK, TSCC_TSS_INTERNAL)); m_can_config_endisable(cdev, false); -- 2.7.4