target/linux/layerscape/patches-5.4/701-net-0330-net-phy-at803x-add-vddio-1v8-and-eee-disable-support.patch

   1 From e54e051c0adbe86116ab81c09a208f3a62c84f92 Mon Sep 17 00:00:00 2001
   2 From: Fugang Duan <fugang.duan@nxp.com>
   3 Date: Wed, 5 Jun 2019 18:38:51 +0800
   4 Subject: [PATCH] net: phy: at803x: add vddio-1v8 and eee disable support
   5
   6 Add new property "at803x,vddio-1p8v" and "at803x,eee-disabled"
   7 support.
   8
   9 Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
  10 [ Aisheng: fix small merge conflict ]
  11 Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
  12 [rebase]
  13 Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
  14 ---
  15  drivers/net/phy/at803x.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++
  16  1 file changed, 64 insertions(+)
  17
  18 --- a/drivers/net/phy/at803x.c
  19 +++ b/drivers/net/phy/at803x.c
  20 @@ -44,8 +44,13 @@
  21  #define AT803X_LOC_MAC_ADDR_0_15_OFFSET                0x804C
  22  #define AT803X_LOC_MAC_ADDR_16_31_OFFSET       0x804B
  23  #define AT803X_LOC_MAC_ADDR_32_47_OFFSET       0x804A
  24 +#define AT803X_SMARTEEE_CTL3_OFFSET            0x805D
  25 +#define AT803X_MMD_ACCESS_CONTROL              0x0D
  26 +#define AT803X_MMD_ACCESS_CONTROL_DATA         0x0E
  27 +#define AT803X_FUNC_DATA                       0x4003
  28  #define AT803X_REG_CHIP_CONFIG                 0x1f
  29  #define AT803X_BT_BX_REG_SEL                   0x8000
  30 +#define AT803X_SMARTEEE_DISABLED_VAL           0x1000
  31  #define AT803X_SGMII_ANEG_EN                   0x1000
  32
  33  #define AT803X_DEBUG_ADDR                      0x1D
  34 @@ -65,6 +70,9 @@
  35
  36  #define AT803X_LPI_EN                          BIT(8)
  37
  38 +#define AT803X_DEBUG_REG_31                    0x1f
  39 +#define AT803X_VDDIO_1P8V_EN                   0x8
  40 +
  41  #define ATH8030_PHY_ID 0x004dd076
  42  #define ATH8031_PHY_ID 0x004dd074
  43  #define ATH8032_PHY_ID 0x004dd023
  44 @@ -72,12 +80,16 @@
  45  #define AT803X_PHY_ID_MASK                     0xffffffef
  46  #define AT8032_PHY_ID_MASK                     0xffffffff
  47
  48 +#define AT803X_EEE_FEATURE_DISABLE             (1 << 1)
  49 +#define AT803X_VDDIO_1P8V                      (1 << 2)
  50 +
  51  MODULE_DESCRIPTION("Atheros 803x PHY driver");
  52  MODULE_AUTHOR("Matus Ujhelyi");
  53  MODULE_LICENSE("GPL");
  54
  55  struct at803x_priv {
  56         bool phy_reset:1;
  57 +       u32 quirks;
  58  };
  59
  60  struct at803x_context {
  61 @@ -141,6 +153,39 @@ static int at803x_disable_tx_delay(struc
  62                                      AT803X_DEBUG_TX_CLK_DLY_EN, 0);
  63  }
  64
  65 +static inline int at803x_set_vddio_1p8v(struct phy_device *phydev)
  66 +{
  67 +       return at803x_debug_reg_mask(phydev, AT803X_DEBUG_REG_31, 0,
  68 +                                       AT803X_VDDIO_1P8V_EN);
  69 +}
  70 +
  71 +static int at803x_disable_eee(struct phy_device *phydev)
  72 +{
  73 +       int ret;
  74 +
  75 +       ret = phy_write(phydev, AT803X_MMD_ACCESS_CONTROL,
  76 +                                 AT803X_DEVICE_ADDR);
  77 +       if (ret < 0)
  78 +               return ret;
  79 +
  80 +       ret = phy_write(phydev, AT803X_MMD_ACCESS_CONTROL_DATA,
  81 +                                 AT803X_SMARTEEE_CTL3_OFFSET);
  82 +       if (ret < 0)
  83 +               return ret;
  84 +
  85 +       ret = phy_write(phydev, AT803X_MMD_ACCESS_CONTROL,
  86 +                                 AT803X_FUNC_DATA);
  87 +       if (ret < 0)
  88 +               return ret;
  89 +
  90 +       ret = phy_write(phydev, AT803X_MMD_ACCESS_CONTROL_DATA,
  91 +                                 AT803X_SMARTEEE_DISABLED_VAL);
  92 +       if (ret < 0)
  93 +               return ret;
  94 +
  95 +       return 0;
  96 +}
  97 +
  98  /* save relevant PHY registers to private copy */
  99  static void at803x_context_save(struct phy_device *phydev,
 100                                 struct at803x_context *context)
 101 @@ -254,6 +299,12 @@ static int at803x_probe(struct phy_devic
 102         if (!priv)
 103                 return -ENOMEM;
 104
 105 +       if (of_property_read_bool(dev->of_node, "at803x,eee-disabled"))
 106 +               priv->quirks |= AT803X_EEE_FEATURE_DISABLE;
 107 +
 108 +       if (of_property_read_bool(dev->of_node, "at803x,vddio-1p8v"))
 109 +               priv->quirks |= AT803X_VDDIO_1P8V;
 110 +
 111         phydev->priv = priv;
 112
 113         return 0;
 114 @@ -275,6 +326,7 @@ static void at803x_enable_smart_eee(stru
 115  static int at803x_config_init(struct phy_device *phydev)
 116  {
 117         int ret;
 118 +       struct at803x_priv *priv = phydev->priv;
 119         u32 v;
 120
 121         if (phydev->drv->phy_id == ATH8031_PHY_ID &&
 122 @@ -323,6 +375,18 @@ static int at803x_config_init(struct phy
 123         else
 124                 ret = at803x_disable_tx_delay(phydev);
 125
 126 +       if (priv->quirks & AT803X_VDDIO_1P8V) {
 127 +               ret = at803x_set_vddio_1p8v(phydev);
 128 +               if (ret < 0)
 129 +                       return ret;
 130 +       }
 131 +
 132 +       if (priv->quirks & AT803X_EEE_FEATURE_DISABLE) {
 133 +               ret = at803x_disable_eee(phydev);
 134 +               if (ret < 0)
 135 +                       return ret;
 136 +       }
 137 +
 138         return ret;
 139  }
 140