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Commit 100a9b9d authored by Andrew Lunn's avatar Andrew Lunn Committed by David S. Miller
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net: dsa :mv88e6xxx: Disable unused ports 



If the NO_CPU strap is set, the switch starts in 'dumb hub' mode, with
all ports enable. Ports which are then actively used are reconfigured
as required when the driver starts. However unused ports are left
alone. Change this to disable them, and turn off any SERDES
interface. This could save some power and so reduce the temperature a
bit.

Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Reviewed-by: default avatarVivien Didelot <vivien.didelot@gmail.com>
Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4a0eb731

drivers/net/dsa/mv88e6xxx/chip.c

+11 −1
Original line number Diff line number Diff line
@@ -2599,8 +2599,18 @@ static int mv88e6xxx_setup(struct dsa_switch *ds) 


	/* Setup Switch Port Registers */

	for (i = 0; i < mv88e6xxx_num_ports(chip); i++) {

		if (dsa_is_unused_port(ds, i))

		if (dsa_is_unused_port(ds, i)) {

			err = mv88e6xxx_port_set_state(chip, i,

						       BR_STATE_DISABLED);

			if (err)

				goto unlock;



			err = mv88e6xxx_serdes_power(chip, i, false);

			if (err)

				goto unlock;



			continue;

		}



		err = mv88e6xxx_setup_port(chip, i);

		if (err)