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net: phy: bcm7xxx: fix spurious MDIO failures during workaround 

Writing first to the AFE registers, and then the VCO, RCAL, RC_CAL
registers turned out to unveil some spurious MDIO read/write failures
which would make the workaround partially applied. The fix is to write
first to the VCO, RCAL, RC_CAL registers, and then write to the AFE
registers.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2014-03-24 16:36:48 -07:00 committed by David S. Miller
parent a3622f2c82
commit 9918542e2d
1 changed files with 15 additions and 15 deletions
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30
drivers/net/phy/bcm7xxx.c
View File

@ -103,21 +103,6 @@ static void phy_write_misc(struct phy_device *phydev,
static int bcm7xxx_28nm_afe_config_init(struct phy_device *phydev)
{
/* write AFE_RXCONFIG_0 */
phy_write_misc(phydev, AFE_RXCONFIG_0, 0xeb19);
/* write AFE_RXCONFIG_1 */
phy_write_misc(phydev, AFE_RXCONFIG_1, 0x9a3f);
/* write AFE_RX_LP_COUNTER */
phy_write_misc(phydev, AFE_RX_LP_COUNTER, 0x7fc7);
/* write AFE_HPF_TRIM_OTHERS */
phy_write_misc(phydev, AFE_HPF_TRIM_OTHERS, 0x000b);
/* write AFTE_TX_CONFIG */
phy_write_misc(phydev, AFE_TX_CONFIG, 0x0800);
/* Increase VCO range to prevent unlocking problem of PLL at low
* temp
*/
@ -143,6 +128,21 @@ static int bcm7xxx_28nm_afe_config_init(struct phy_device *phydev)
/* Disable Reset R_CAL/RC_CAL Engine */
phy_write_exp(phydev, CORE_EXPB0, 0x0000);
/* write AFE_RXCONFIG_0 */
phy_write_misc(phydev, AFE_RXCONFIG_0, 0xeb19);
/* write AFE_RXCONFIG_1 */
phy_write_misc(phydev, AFE_RXCONFIG_1, 0x9a3f);
/* write AFE_RX_LP_COUNTER */
phy_write_misc(phydev, AFE_RX_LP_COUNTER, 0x7fc7);
/* write AFE_HPF_TRIM_OTHERS */
phy_write_misc(phydev, AFE_HPF_TRIM_OTHERS, 0x000b);
/* write AFTE_TX_CONFIG */
phy_write_misc(phydev, AFE_TX_CONFIG, 0x0800);
return 0;
}