From a2e47134e577713add97124afd812bc3f93627fb Mon Sep 17 00:00:00 2001 From: Brandon Streiff Date: Wed, 14 Feb 2018 01:07:51 +0100 Subject: net: dsa: mv88e6xxx: add workaround for 6341 timestamping 88E6341 devices default to timestamping at the PHY, but due to a hardware issue, timestamps via this component are unreliable. For this family, configure the PTP hardware to force the timestamping to occur at the MAC. Signed-off-by: Brandon Streiff Signed-off-by: Andrew Lunn Signed-off-by: David S. Miller --- drivers/net/dsa/mv88e6xxx/hwtstamp.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/net/dsa/mv88e6xxx/hwtstamp.h') diff --git a/drivers/net/dsa/mv88e6xxx/hwtstamp.h b/drivers/net/dsa/mv88e6xxx/hwtstamp.h index 18ff39cdab4c..bc71c9212a08 100644 --- a/drivers/net/dsa/mv88e6xxx/hwtstamp.h +++ b/drivers/net/dsa/mv88e6xxx/hwtstamp.h @@ -34,6 +34,15 @@ /* Offset 0x02: Timestamp Arrival Capture Pointers */ #define MV88E6XXX_PTP_TS_ARRIVAL_PTR 0x02 +/* Offset 0x07: PTP Global Configuration */ +#define MV88E6341_PTP_CFG 0x07 +#define MV88E6341_PTP_CFG_UPDATE 0x8000 +#define MV88E6341_PTP_CFG_IDX_MASK 0x7f00 +#define MV88E6341_PTP_CFG_DATA_MASK 0x00ff +#define MV88E6341_PTP_CFG_MODE_IDX 0x0 +#define MV88E6341_PTP_CFG_MODE_TS_AT_PHY 0x00 +#define MV88E6341_PTP_CFG_MODE_TS_AT_MAC 0x80 + /* Offset 0x08: PTP Interrupt Status */ #define MV88E6XXX_PTP_IRQ_STATUS 0x08 -- cgit v1.2.3