diff options
Diffstat (limited to 'drivers/net/rtl8169.c')
| -rw-r--r-- | drivers/net/rtl8169.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/net/rtl8169.c b/drivers/net/rtl8169.c index 75058fdadc..fb4fae20e5 100644 --- a/drivers/net/rtl8169.c +++ b/drivers/net/rtl8169.c @@ -240,6 +240,9 @@ enum RTL8169_register_content { /*_TBICSRBit*/ TBILinkOK = 0x02000000, + + /* FuncEvent/Misc */ + RxDv_Gated_En = 0x80000, }; static struct { @@ -1210,6 +1213,19 @@ static int rtl8169_eth_probe(struct udevice *dev) return ret; } + /* + * WAR for DHCP failure after rebooting from kernel. + * Clear RxDv_Gated_En bit which was set by kernel driver. + * Without this, U-Boot can't get an IP via DHCP. + * Register (FuncEvent, aka MISC) and RXDV_GATED_EN bit are from + * the r8169.c kernel driver. + */ + + u32 val = RTL_R32(FuncEvent); + debug("%s: FuncEvent/Misc (0xF0) = 0x%08X\n", __func__, val); + val &= ~RxDv_Gated_En; + RTL_W32(FuncEvent, val); + return 0; } |