diff options
| author | Grygorii Strashko <grygorii.strashko@ti.com> | 2023-05-10 18:21:39 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-05-12 08:44:43 +0100 |
| commit | 0b01db274028f5acd207332686ffc92ac77491ac (patch) | |
| tree | a46bbc755bcf0ee18e5339d8f7447f76697f04ff /CREDITS | |
| parent | f816b9829b19394d318e01953aa3b2721bca040d (diff) | |
net: phy: dp83867: add w/a for packet errors seen with short cables
Introduce the W/A for packet errors seen with short cables (<1m) between
two DP83867 PHYs.
The W/A recommended by DM requires FFE Equalizer Configuration tuning by
writing value 0x0E81 to DSP_FFE_CFG register (0x012C), surrounded by hard
and soft resets as follows:
write_reg(0x001F, 0x8000); //hard reset
write_reg(DSP_FFE_CFG, 0x0E81);
write_reg(0x001F, 0x4000); //soft reset
Since DP83867 PHY DM says "Changing this register to 0x0E81, will not
affect Long Cable performance.", enable the W/A by default.
Fixes: 2a10154abcb7 ("net: phy: dp83867: Add TI dp83867 phy")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'CREDITS')
0 files changed, 0 insertions, 0 deletions