diff options
| author |   Ben Hutchings <bhutchings@solarflare.com> | 2010-12-02 13:46:37 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2010-12-03 09:08:04 -0800 |
| commit | 3157183a90fdbd686f939d2f032b675f7e9983d6 (patch) | |
| tree | 14bd61a1eada344db7778aa66a0aaf4c8d67870c /drivers/net/sfc/qt202x_phy.c | |
| parent | sfc: Read-to-clear LM87 alarm/interrupt status at start of day (diff) | |
| download | linux-dev-3157183a90fdbd686f939d2f032b675f7e9983d6.tar.xz linux-dev-3157183a90fdbd686f939d2f032b675f7e9983d6.zip | |
sfc: Clear RXIN_SEL when soft-resetting QT2025C
When we enable PMA/PMD loopback this automatically sets RXIN_SEL
(inverse polarity for RXIN). We need to clear that bit during the
soft-reset sequence, as it is not done automatically.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/sfc/qt202x_phy.c')
| -rw-r--r-- | drivers/net/sfc/qt202x_phy.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/sfc/qt202x_phy.c b/drivers/net/sfc/qt202x_phy.c index 68813d1d85f3..ea3ae0089315 100644 --- a/drivers/net/sfc/qt202x_phy.c +++ b/drivers/net/sfc/qt202x_phy.c @@ -41,6 +41,8 @@ #define PCS_UC_STATUS_LBN 0 #define PCS_UC_STATUS_WIDTH 8 #define PCS_UC_STATUS_FW_SAVE 0x20 +#define PMA_PMD_MODE_REG 0xc301 +#define PMA_PMD_RXIN_SEL_LBN 6 #define PMA_PMD_FTX_CTRL2_REG 0xc309 #define PMA_PMD_FTX_STATIC_LBN 13 #define PMA_PMD_VEND1_REG 0xc001 @@ -282,6 +284,10 @@ static int qt2025c_select_phy_mode(struct efx_nic *efx) * slow) reload of the firmware image (the microcontroller's code * memory is not affected by the microcontroller reset). */ efx_mdio_write(efx, 1, 0xc317, 0x00ff); + /* PMA/PMD loopback sets RXIN to inverse polarity and the firmware + * restart doesn't reset it. We need to do that ourselves. */ + efx_mdio_set_flag(efx, 1, PMA_PMD_MODE_REG, + 1 << PMA_PMD_RXIN_SEL_LBN, false); efx_mdio_write(efx, 1, 0xc300, 0x0002); msleep(20); |