diff options
| author | Serge Semin <fancer.lancer@gmail.com> | 2019-05-09 00:51:17 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-05-09 02:31:38 +0300 |
| commit | 1da7756e6616c7795c8a104fde0a66f212ef659d (patch) | |
| tree | 5c03f29d13b1e3bb61f055428b3148dd7157384d /drivers | |
| parent | f81dadbcf7fd067baf184b63c179fc392bdb226e (diff) | |
| download | linux-1da7756e6616c7795c8a104fde0a66f212ef659d.tar.xz | |
net: phy: realtek: Change TX-delay setting for RGMII modes only
It's prone to problems if delay is cleared out for other than RGMII
modes. So lets set/clear the TX-delay in the config register only
if actually RGMII-like interface mode is requested. This only
concerns rtl8211f chips.
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/phy/realtek.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c index cfbc0ca61123..761ce3b1e7bd 100644 --- a/drivers/net/phy/realtek.c +++ b/drivers/net/phy/realtek.c @@ -161,12 +161,23 @@ static int rtl8211c_config_init(struct phy_device *phydev) static int rtl8211f_config_init(struct phy_device *phydev) { - u16 val = 0; + u16 val; - /* enable TX-delay for rgmii-id and rgmii-txid, otherwise disable it */ - if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID || - phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) + /* enable TX-delay for rgmii-{id,txid}, and disable it for rgmii and + * rgmii-rxid. The RX-delay can be enabled by the external RXDLY pin. + */ + switch (phydev->interface) { + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_RXID: + val = 0; + break; + case PHY_INTERFACE_MODE_RGMII_ID: + case PHY_INTERFACE_MODE_RGMII_TXID: val = RTL8211F_TX_DELAY; + break; + default: /* the rest of the modes imply leaving delay as is. */ + return 0; + } return phy_modify_paged(phydev, 0xd08, 0x11, RTL8211F_TX_DELAY, val); } |