diff options
| -rw-r--r-- | src/drivers/net/realtek.c | 10 | ||||
| -rw-r--r-- | src/include/mii.h | 2 |
2 files changed, 12 insertions, 0 deletions
diff --git a/src/drivers/net/realtek.c b/src/drivers/net/realtek.c index 0af3416d5..a43efb68b 100644 --- a/src/drivers/net/realtek.c +++ b/src/drivers/net/realtek.c @@ -420,6 +420,16 @@ static int realtek_phy_reset ( struct realtek_nic *rtl ) { */ } + /* Some cards (e.g. RTL8211B) have a hardware errata that + * requires the MII_MMD_DATA register to be cleared before the + * link will come up. + */ + if ( ( rc = mii_write ( &rtl->mii, MII_MMD_DATA, 0 ) ) != 0 ) { + /* Ignore failures, since the register may not be + * present on all PHYs. + */ + } + /* Restart autonegotiation */ if ( ( rc = mii_restart ( &rtl->mii ) ) != 0 ) { DBGC ( rtl, "REALTEK %p could not restart MII: %s\n", diff --git a/src/include/mii.h b/src/include/mii.h index e2afef854..515ba224d 100644 --- a/src/include/mii.h +++ b/src/include/mii.h @@ -23,6 +23,8 @@ FILE_LICENCE ( GPL2_ONLY ); #define MII_EXPANSION 0x06 /* Expansion register */ #define MII_CTRL1000 0x09 /* 1000BASE-T control */ #define MII_STAT1000 0x0a /* 1000BASE-T status */ +#define MII_MMD_CTRL 0x0d /* MMD Access Control Register */ +#define MII_MMD_DATA 0x0e /* MMD Access Data Register */ #define MII_ESTATUS 0x0f /* Extended Status */ #define MII_DCOUNTER 0x12 /* Disconnect counter */ #define MII_FCSCOUNTER 0x13 /* False carrier counter */ |