mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
netdev: bfin_mac: document TE setting in RMII modes
The current code sometimes generates build warnings due to how it checks the silicon revision, so clean it up and properly document things. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
bc8d7da3f1
commit
72f49050ba
1 changed files with 11 additions and 2 deletions
|
@ -1237,8 +1237,17 @@ static int bfin_mac_enable(struct phy_device *phydev)
|
||||||
|
|
||||||
if (phydev->interface == PHY_INTERFACE_MODE_RMII) {
|
if (phydev->interface == PHY_INTERFACE_MODE_RMII) {
|
||||||
opmode |= RMII; /* For Now only 100MBit are supported */
|
opmode |= RMII; /* For Now only 100MBit are supported */
|
||||||
#if (defined(CONFIG_BF537) || defined(CONFIG_BF536)) && CONFIG_BF_REV_0_2
|
#if defined(CONFIG_BF537) || defined(CONFIG_BF536)
|
||||||
opmode |= TE;
|
if (__SILICON_REVISION__ < 3) {
|
||||||
|
/*
|
||||||
|
* This isn't publicly documented (fun times!), but in
|
||||||
|
* silicon <=0.2, the RX and TX pins are clocked together.
|
||||||
|
* So in order to recv, we must enable the transmit side
|
||||||
|
* as well. This will cause a spurious TX interrupt too,
|
||||||
|
* but we can easily consume that.
|
||||||
|
*/
|
||||||
|
opmode |= TE;
|
||||||
|
}
|
||||||
#endif
|
#endif
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in a new issue