xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: phy: smsc: disable energy detect mode

Browse Source 
On some boards the energy enable detect mode leads in
trouble with some switches, so make the enabling of
this mode configurable through DT.

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Heiko Schocher
2015-10-17 06:04:36 +02:00
committed by David S. Miller
parent 9e42f71526
commit d88ecb373b
2 changed files with 38 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/net/phy/smsc.c
View File

@@ -43,16 +43,25 @@ static int smsc_phy_ack_interrupt(struct phy_device *phydev)
static int smsc_phy_config_init(struct phy_device *phydev)
{
int __maybe_unused len;
struct device *dev __maybe_unused = &phydev->dev;
struct device_node *of_node __maybe_unused = dev->of_node;
int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
int enable_energy = 1;
if (rc < 0)
return rc;
/* Enable energy detect mode for this SMSC Transceivers */
rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
rc | MII_LAN83C185_EDPWRDOWN);
if (rc < 0)
return rc;
if (of_find_property(of_node, "smsc,disable-energy-detect", &len))
enable_energy = 0;
if (enable_energy) {
/* Enable energy detect mode for this SMSC Transceivers */
rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS,
rc | MII_LAN83C185_EDPWRDOWN);
if (rc < 0)
return rc;
}
return smsc_phy_ack_interrupt(phydev);
}