Le 07/12/2014 19:35, Wenyou Yang a écrit : > Appearance: On some boards, after power up, the Ethernet doesn't work. > > Reason: On the SAMA5D4EK, the PIOE2 pin is connected to the NAND_Tree# of > KSZ8081, > But it outputs LOW during the reset period, which cause the NAND_Tree# > enabled. > > Workaround: In the .config_init(), add code to disable NAND_Tree# > by operating Operation Mode Strap Override(i.e. Register 16h).
Your patch won't apply cleanly to the net-next tree where the PHY drivers development is happening, especially not after Johan's recent changes. Is not what you are looking for a phy_fixup() rather than clearing this bit for all Micrel PHYs? > > Signed-off-by: Wenyou Yang <wenyou.y...@atmel.com> > --- > drivers/net/phy/micrel.c | 8 +++++++- > 1 file changed, 7 insertions(+), 1 deletion(-) > > diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c > index 8c2a29a..11d72cb 100644 > --- a/drivers/net/phy/micrel.c > +++ b/drivers/net/phy/micrel.c > @@ -31,6 +31,7 @@ > /* Operation Mode Strap Override */ > #define MII_KSZPHY_OMSO 0x16 > #define KSZPHY_OMSO_B_CAST_OFF (1 << 9) > +#define KSZPHY_OMSO_NAND_TREE_OVERRIDE (1 << 5) > #define KSZPHY_OMSO_RMII_OVERRIDE (1 << 1) > #define KSZPHY_OMSO_MII_OVERRIDE (1 << 0) > > @@ -180,7 +181,12 @@ static int kszphy_setup_led(struct phy_device *phydev, > > static int kszphy_config_init(struct phy_device *phydev) > { > - return 0; > + int rc; > + > + phy_write(phydev, MII_KSZPHY_OMSO, phy_read(phydev, MII_KSZPHY_OMSO) > + & (~KSZPHY_OMSO_NAND_TREE_OVERRIDE)); > + rc = ksz_config_flags(phydev); > + return rc < 0 ? rc : 0; > } > > static int kszphy_config_init_led8041(struct phy_device *phydev) > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/