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[net-next,08/11] net: mscc: ocelot: disable flow control on NPI interface

Message ID 20200527234113.2491988-9-olteanv@gmail.com
State New
Headers show
Series [net-next,01/11] regmap: add helper for per-port regfield initialization | expand

Commit Message

Vladimir Oltean May 27, 2020, 11:41 p.m. UTC 
From: Vladimir Oltean <vladimir.oltean@nxp.com>

The Ocelot switches do not support flow control on Ethernet interfaces
where a DSA tag must be added. If pause frames are enabled, they will be
encapsulated in the DSA tag just like regular frames, and the DSA master
will not recognize them.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
 drivers/net/ethernet/mscc/ocelot.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index 6fc5b72c9260..41d1026ec5b3 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -2200,6 +2200,10 @@  void ocelot_configure_cpu(struct ocelot *ocelot, int npi,
 				    extraction);
 		ocelot_fields_write(ocelot, npi, SYS_PORT_MODE_INCL_INJ_HDR,
 				    injection);
+
+		/* Disable transmission of pause frames */
+		ocelot_rmw_rix(ocelot, 0, SYS_PAUSE_CFG_PAUSE_ENA,
+			       SYS_PAUSE_CFG, npi);
 	}
 
 	/* Enable CPU port module */