target/linux/layerscape/patches-5.4/701-net-0329-net-phy-Inphi-IN112525_s03-retimer-updates.patch

   1 From a1b049babfd0ae224179dc82ec69cb9bbf585699 Mon Sep 17 00:00:00 2001
   2 From: Florin Chiculita <florinlaurentiu.chiculita@nxp.com>
   3 Date: Sun, 16 Dec 2018 22:35:44 +0200
   4 Subject: [PATCH] net/phy: Inphi IN112525_s03 retimer updates
   5
   6 The retimer doesn't get probed in linux due to the fact that it's a
   7 non-standard clause-45 device. Hardcoding the phyid in device-tree
   8 and adding custom routines for registry read/write operations
   9 solves the issue.
  10
  11 Signed-off-by: Florin Chiculita <florinlaurentiu.chiculita@nxp.com>
  12 ---
  13  drivers/net/phy/inphi.c | 30 +++++++++++++++++++++++-------
  14  1 file changed, 23 insertions(+), 7 deletions(-)
  15
  16 --- a/drivers/net/phy/inphi.c
  17 +++ b/drivers/net/phy/inphi.c
  18 @@ -82,11 +82,7 @@
  19  #define PHYMISC_REG22  0x01C0
  20
  21  #define RX_VCO_CODE_OFFSET     5
  22 -
  23 -#define mdio_wr(a, b)  phy_write_mmd(inphi_phydev, MDIO_MMD_VEND1, (a), (b))
  24 -#define mdio_rd(a)     phy_read_mmd(inphi_phydev, MDIO_MMD_VEND1, (a))
  25 -
  26 -#define VCO_CODE  390
  27 +#define VCO_CODE               390
  28
  29  int vco_codes[ALL_LANES] = {
  30         VCO_CODE,
  31 @@ -102,6 +98,23 @@ static DECLARE_DELAYED_WORK(mykmod_work,
  32  static unsigned long onesec;
  33  struct phy_device *inphi_phydev;
  34
  35 +static int mdio_wr(u32 regnum, u16 val)
  36 +{
  37 +       regnum = MII_ADDR_C45 | (MDIO_MMD_VEND1 << 16) | (regnum & 0xffff);
  38 +
  39 +       return mdiobus_write(inphi_phydev->mdio.bus, inphi_phydev->mdio.addr,
  40 +                               regnum, val);
  41 +}
  42 +
  43 +static int mdio_rd(u32 regnum)
  44 +{
  45 +       regnum = MII_ADDR_C45 | (MDIO_MMD_VEND1 << 16) | (regnum & 0xffff);
  46 +
  47 +       return mdiobus_read(inphi_phydev->mdio.bus, inphi_phydev->mdio.addr,
  48 +                               regnum);
  49 +}
  50 +
  51 +
  52  int bit_test(int value, int bit_field)
  53  {
  54         int result;
  55 @@ -518,14 +531,17 @@ int inphi_probe(struct phy_device *phyde
  56  {
  57         int phy_id = 0, id_lsb = 0, id_msb = 0;
  58
  59 +       /* setup the inphi_phydev ptr for mdio_rd/mdio_wr APIs */
  60 +       inphi_phydev = phydev;
  61 +
  62         /* Read device id from phy registers */
  63 -       id_lsb = phy_read_mmd(phydev, MDIO_MMD_VEND1, INPHI_S03_DEVICE_ID_MSB);
  64 +       id_lsb = mdio_rd(INPHI_S03_DEVICE_ID_MSB);
  65         if (id_lsb < 0)
  66                 return -ENXIO;
  67
  68         phy_id = id_lsb << 16;
  69
  70 -       id_msb = phy_read_mmd(phydev, MDIO_MMD_VEND1, INPHI_S03_DEVICE_ID_LSB);
  71 +       id_msb = mdio_rd(INPHI_S03_DEVICE_ID_LSB);
  72         if (id_msb < 0)
  73                 return -ENXIO;
  74