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Commit 7de1557c authored by Florian Fainelli's avatar Florian Fainelli Committed by David S. Miller
Browse files

net: dsa: bcm_sf2: disable RGMII interface(s) when link is down 



When the link is down, disable the RGMII interface to conserve as much
power as possible. We re-enable the RGMII interface whenever the link is
detected.

Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b2f2af21

drivers/net/dsa/bcm_sf2.c

+9 −0
Original line number Diff line number Diff line
@@ -506,6 +506,15 @@ static void bcm_sf2_sw_adjust_link(struct dsa_switch *ds, int port, 
		port_mode = EXT_REVMII;

		break;

	default:

		/* All other PHYs: internal and MoCA */

		goto force_link;

	}



	/* If the link is down, just disable the interface to conserve power */

	if (!phydev->link) {

		reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));

		reg &= ~RGMII_MODE_EN;

		reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));

		goto force_link;

	}