From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Lunn Subject: [PATCH net-next 10/13] net: dsa: mv88e6xxx: Power on/off SERDES on cmode change Date: Thu, 9 Aug 2018 15:38:46 +0200 Message-ID: <1533821929-20071-11-git-send-email-andrew@lunn.ch> References: <1533821929-20071-1-git-send-email-andrew@lunn.ch> Cc: netdev , Russell King , Florian Fainelli , nikita.yoush@cogentembedded.com, Chris Healy , marek.behun@nic.cz, Andrew Lunn To: David Miller Return-path: Received: from vps0.lunn.ch ([185.16.172.187]:59870 "EHLO vps0.lunn.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732079AbeHIQKs (ORCPT ); Thu, 9 Aug 2018 12:10:48 -0400 In-Reply-To: <1533821929-20071-1-git-send-email-andrew@lunn.ch> Sender: netdev-owner@vger.kernel.org List-ID: The 6390 family has a number of SERDES interfaces per port. When the cmode changes, eg 1000Base-X to XAUI, the SERDES interface in use will also change. Power down the old SERDES interface and power up the new SERDES interface. Signed-off-by: Andrew Lunn --- drivers/net/dsa/mv88e6xxx/port.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c index d236f3420f2d..977b4cb82299 100644 --- a/drivers/net/dsa/mv88e6xxx/port.c +++ b/drivers/net/dsa/mv88e6xxx/port.c @@ -19,6 +19,7 @@ #include "chip.h" #include "port.h" +#include "serdes.h" int mv88e6xxx_port_read(struct mv88e6xxx_chip *chip, int port, int reg, u16 *val) @@ -372,6 +373,10 @@ int mv88e6390x_port_set_cmode(struct mv88e6xxx_chip *chip, int port, cmode = 0; } + err = mv88e6390_serdes_power(chip, port, false); + if (err) + return err; + if (cmode) { err = mv88e6xxx_port_read(chip, port, MV88E6XXX_PORT_STS, ®); if (err) @@ -383,6 +388,10 @@ int mv88e6390x_port_set_cmode(struct mv88e6xxx_chip *chip, int port, err = mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_STS, reg); if (err) return err; + + err = mv88e6390_serdes_power(chip, port, true); + if (err) + return err; } chip->ports[port].cmode = cmode; -- 2.18.0