target/linux/generic/pending-5.15/727-net-mtk_sgmii-mtk_pcs_setup_mode_an-don-t-rely-on-re.patch

   1 From e4dca7affb8c03438b63bdb5fddefd6ad2431cfd Mon Sep 17 00:00:00 2001
   2 From: Alexander Couzens <lynxis@fe80.eu>
   3 Date: Mon, 15 Aug 2022 14:59:29 +0200
   4 Subject: [PATCH 07/10] net: mtk_sgmii: mtk_pcs_setup_mode_an: don't rely on
   5  register defaults
   6
   7 Ensure autonegotiation is enabled.
   8
   9 Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
  10 ---
  11  drivers/net/ethernet/mediatek/mtk_sgmii.c | 5 +++--
  12  1 file changed, 3 insertions(+), 2 deletions(-)
  13
  14 --- a/drivers/net/ethernet/mediatek/mtk_sgmii.c
  15 +++ b/drivers/net/ethernet/mediatek/mtk_sgmii.c
  16 @@ -32,12 +32,13 @@ static int mtk_pcs_setup_mode_an(struct
  17         regmap_write(mpcs->regmap, SGMSYS_PCS_LINK_TIMER,
  18                      SGMII_LINK_TIMER_DEFAULT);
  19
  20 +       /* disable remote fault & enable auto neg */
  21         regmap_read(mpcs->regmap, SGMSYS_SGMII_MODE, &val);
  22 -       val |= SGMII_REMOTE_FAULT_DIS;
  23 +       val |= SGMII_REMOTE_FAULT_DIS | SGMII_SPEED_DUPLEX_AN;
  24         regmap_write(mpcs->regmap, SGMSYS_SGMII_MODE, val);
  25
  26         regmap_read(mpcs->regmap, SGMSYS_PCS_CONTROL_1, &val);
  27 -       val |= SGMII_AN_RESTART;
  28 +       val |= SGMII_AN_RESTART | SGMII_AN_ENABLE;
  29         regmap_write(mpcs->regmap, SGMSYS_PCS_CONTROL_1, val);
  30
  31