From 72f49050ba18959472aac723cd9d094bc3547e89 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Sun, 27 Mar 2011 22:33:13 +0000 Subject: 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 Signed-off-by: David S. Miller --- drivers/net/bfin_mac.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/bfin_mac.c b/drivers/net/bfin_mac.c index 22abfb39d81..68d45ba2d9b 100644 --- a/drivers/net/bfin_mac.c +++ b/drivers/net/bfin_mac.c @@ -1237,8 +1237,17 @@ static int bfin_mac_enable(struct phy_device *phydev) if (phydev->interface == PHY_INTERFACE_MODE_RMII) { opmode |= RMII; /* For Now only 100MBit are supported */ -#if (defined(CONFIG_BF537) || defined(CONFIG_BF536)) && CONFIG_BF_REV_0_2 - opmode |= TE; +#if defined(CONFIG_BF537) || defined(CONFIG_BF536) + 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 } -- cgit v1.2.3