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| author | Florian Fainelli <f.fainelli@gmail.com> | 2014-09-24 17:05:19 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-09-28 17:14:09 -0400 |
| commit | 7de1557ce7521e756974d5c28794c2375d28e3cc (patch) | |
| tree | d8744be27bcc91ad7918e78db3220d9b9495a6c5 /drivers/net/dsa/bcm_sf2.c | |
| parent | b2f2af21e37f6d12bd735c27da8942331aa9b3d7 (diff) | |
| download | lwn-7de1557ce7521e756974d5c28794c2375d28e3cc.tar.gz lwn-7de1557ce7521e756974d5c28794c2375d28e3cc.zip | |
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: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/bcm_sf2.c')
| -rw-r--r-- | drivers/net/dsa/bcm_sf2.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c index d9b7da545063..58b8fef25b96 100644 --- a/drivers/net/dsa/bcm_sf2.c +++ b/drivers/net/dsa/bcm_sf2.c @@ -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; } |