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

   1 From 444044a410d4cf3b6dd462f2c9352d56039d9e07 Mon Sep 17 00:00:00 2001
   2 From: Hauke Mehrtens <hauke@hauke-m.de>
   3 Date: Sun, 6 Oct 2013 17:58:24 +0200
   4 Subject: [PATCH 6/6] 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 ---
  12  drivers/net/ethernet/broadcom/b44.c |    5 ++++-
  13  1 file changed, 4 insertions(+), 1 deletion(-)
  14
  15 --- a/drivers/net/ethernet/broadcom/b44.c
  16 +++ b/drivers/net/ethernet/broadcom/b44.c
  17 @@ -1358,7 +1358,10 @@ static void b44_halt(struct b44 *bp)
  18         bw32(bp, B44_MAC_CTRL, MAC_CTRL_PHY_PDOWN);
  19         /* now reset the chip, but without enabling the MAC&PHY
  20          * part of it. This has to be done _after_ we shut down the PHY */
  21 -       b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
  22 +       if (bp->has_phy)
  23 +               b44_chip_reset(bp, B44_CHIP_RESET_FULL);
  24 +       else
  25 +               b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
  26  }
  27
  28  /* bp->lock is held. */