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| author | Michal Simek <michal.simek@xilinx.com> | 2020-02-06 15:59:23 +0100 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2020-02-28 12:04:10 +0100 |
| commit | 380376520f726ee7544c2fcd3c114187f01a6f27 (patch) | |
| tree | fd2a7d7ad46a3c33bf8a082740012187526c4382 /drivers | |
| parent | 4c2c28a46571498c55b38d988ace3d176368ed6b (diff) | |
| download | u-boot-380376520f726ee7544c2fcd3c114187f01a6f27.tar.gz u-boot-380376520f726ee7544c2fcd3c114187f01a6f27.tar.xz u-boot-380376520f726ee7544c2fcd3c114187f01a6f27.zip | |
net: phy: dp83867: Clean force link good bit
On Xilinx ZynqMP revA board initial value of PHYCR register is 0x5448 which
means FORCE_LINK_GOOD is already setup. Origin code was doing write but the
new code is doing read/modify/write and keep this bit untouched. That's why
ethernet stop to work.
The patch is cleaning this bit when PHYCR value is composed.
Tested on Xilinx zcu102-revA and zcu104-rev1.0 boards.
Fixes: 37d6265f2bfa ("net: phy: dp83867: refactor rgmii configuration")
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/phy/dp83867.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/phy/dp83867.c b/drivers/net/phy/dp83867.c index 08935d9c15..0098997c0c 100644 --- a/drivers/net/phy/dp83867.c +++ b/drivers/net/phy/dp83867.c @@ -65,6 +65,7 @@ #define DP83867_PHYCR_FIFO_DEPTH_SHIFT 14 #define DP83867_PHYCR_FIFO_DEPTH_MASK GENMASK(15, 14) #define DP83867_PHYCR_RESERVED_MASK BIT(11) +#define DP83867_PHYCR_FORCE_LINK_GOOD BIT(10) #define DP83867_MDI_CROSSOVER 5 #define DP83867_MDI_CROSSOVER_MDIX 2 #define DP83867_PHYCTRL_SGMIIEN 0x0800 @@ -284,6 +285,9 @@ static int dp83867_config(struct phy_device *phydev) val &= ~DP83867_PHYCR_FIFO_DEPTH_MASK; val |= (dp83867->fifo_depth << DP83867_PHYCR_FIFO_DEPTH_SHIFT); + /* Do not force link good */ + val &= ~DP83867_PHYCR_FORCE_LINK_GOOD; + /* The code below checks if "port mirroring" N/A MODE4 has been * enabled during power on bootstrap. * |