target/linux/brcm47xx/patches-3.10/206-b44-activate-PHY-when-MAC-is-off.patch

   1 From bea69c47f5b93b3142f8833f8a34b666d5d7d6a7 Mon Sep 17 00:00:00 2001
   2 From: Hauke Mehrtens <hauke@hauke-m.de>
   3 Date: Fri, 20 Dec 2013 02:16:11 +0100
   4 Subject: [PATCH 206/208] b44: activate PHY when MAC is off
   5
   6 Without this patch we can not access the PHY when the MAC is switched
   7 off. This PHY access is needed to configure the switch, which is done
   8 through PHY registers.
   9
  10 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  11 Signed-off-by: David S. Miller <davem@davemloft.net>
  12 ---
  13  drivers/net/ethernet/broadcom/b44.c |    5 ++++-
  14  1 file changed, 4 insertions(+), 1 deletion(-)
  15
  16 --- a/drivers/net/ethernet/broadcom/b44.c
  17 +++ b/drivers/net/ethernet/broadcom/b44.c
  18 @@ -1360,7 +1360,10 @@ static void b44_halt(struct b44 *bp)
  19         bw32(bp, B44_MAC_CTRL, MAC_CTRL_PHY_PDOWN);
  20         /* now reset the chip, but without enabling the MAC&PHY
  21          * part of it. This has to be done _after_ we shut down the PHY */
  22 -       b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
  23 +       if (bp->flags & B44_FLAG_EXTERNAL_PHY)
  24 +               b44_chip_reset(bp, B44_CHIP_RESET_FULL);
  25 +       else
  26 +               b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
  27  }
  28
  29  /* bp->lock is held. */