target/linux/ipq806x/patches-4.0/701-stmmac-add-phy-handle-support-to-the-platform-layer.patch

   1 From 4f09499bc1d9bb095caccbcd73ff951ee631e521 Mon Sep 17 00:00:00 2001
   2 From: Mathieu Olivari <mathieu@codeaurora.org>
   3 Date: Fri, 8 May 2015 15:42:40 -0700
   4 Subject: [PATCH 1/8] stmmac: add phy-handle support to the platform layer
   5
   6 On stmmac driver, PHY specification in device-tree was done using the
   7 non-standard property "snps,phy-addr". Specifying a PHY on a different
   8 MDIO bus that the one within the stmmac controller doesn't seem to be
   9 possible when device-tree is used.
  10
  11 This change adds support for the phy-handle property, as specified in
  12 Documentation/devicetree/bindings/net/ethernet.txt.
  13
  14 Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
  15 ---
  16  drivers/net/ethernet/stmicro/stmmac/stmmac_main.c  | 28 ++++++++++++++--------
  17  .../net/ethernet/stmicro/stmmac/stmmac_platform.c  |  6 ++++-
  18  include/linux/stmmac.h                             |  1 +
  19  3 files changed, 24 insertions(+), 11 deletions(-)
  20
  21 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
  22 +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
  23 @@ -52,6 +52,7 @@
  24  #include "stmmac_ptp.h"
  25  #include "stmmac.h"
  26  #include <linux/reset.h>
  27 +#include <linux/of_mdio.h>
  28
  29  #define STMMAC_ALIGN(x)        L1_CACHE_ALIGN(x)
  30
  31 @@ -816,18 +817,25 @@ static int stmmac_init_phy(struct net_de
  32         priv->speed = 0;
  33         priv->oldduplex = -1;
  34
  35 -       if (priv->plat->phy_bus_name)
  36 -               snprintf(bus_id, MII_BUS_ID_SIZE, "%s-%x",
  37 -                        priv->plat->phy_bus_name, priv->plat->bus_id);
  38 -       else
  39 -               snprintf(bus_id, MII_BUS_ID_SIZE, "stmmac-%x",
  40 -                        priv->plat->bus_id);
  41 -
  42 -       snprintf(phy_id_fmt, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, bus_id,
  43 -                priv->plat->phy_addr);
  44 -       pr_debug("stmmac_init_phy:  trying to attach to %s\n", phy_id_fmt);
  45 +       if (priv->plat->phy_node) {
  46 +               phydev = of_phy_connect(dev, priv->plat->phy_node,
  47 +                                       &stmmac_adjust_link, 0, interface);
  48 +       } else {
  49 +               if (priv->plat->phy_bus_name)
  50 +                       snprintf(bus_id, MII_BUS_ID_SIZE, "%s-%x",
  51 +                                priv->plat->phy_bus_name, priv->plat->bus_id);
  52 +               else
  53 +                       snprintf(bus_id, MII_BUS_ID_SIZE, "stmmac-%x",
  54 +                                priv->plat->bus_id);
  55 +
  56 +               snprintf(phy_id_fmt, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, bus_id,
  57 +                        priv->plat->phy_addr);
  58 +               pr_debug("stmmac_init_phy:  trying to attach to %s\n",
  59 +                        phy_id_fmt);
  60
  61 -       phydev = phy_connect(dev, phy_id_fmt, &stmmac_adjust_link, interface);
  62 +               phydev = phy_connect(dev, phy_id_fmt, &stmmac_adjust_link,
  63 +                                    interface);
  64 +       }
  65
  66         if (IS_ERR(phydev)) {
  67                 pr_err("%s: Could not attach to PHY\n", dev->name);
  68 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
  69 +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
  70 @@ -27,6 +27,7 @@
  71  #include <linux/of.h>
  72  #include <linux/of_net.h>
  73  #include <linux/of_device.h>
  74 +#include <linux/of_mdio.h>
  75
  76  #include "stmmac.h"
  77  #include "stmmac_platform.h"
  78 @@ -167,13 +168,16 @@ static int stmmac_probe_config_dt(struct
  79         /* Default to phy auto-detection */
  80         plat->phy_addr = -1;
  81
  82 +       /* If we find a phy-handle property, use it as the PHY */
  83 +       plat->phy_node = of_parse_phandle(np, "phy-handle", 0);
  84 +
  85         /* "snps,phy-addr" is not a standard property. Mark it as deprecated
  86          * and warn of its use. Remove this when phy node support is added.
  87          */
  88         if (of_property_read_u32(np, "snps,phy-addr", &plat->phy_addr) == 0)
  89                 dev_warn(&pdev->dev, "snps,phy-addr property is deprecated\n");
  90
  91 -       if (plat->phy_bus_name)
  92 +       if (plat->phy_node || plat->phy_bus_name)
  93                 plat->mdio_bus_data = NULL;
  94         else
  95                 plat->mdio_bus_data =
  96 --- a/include/linux/stmmac.h
  97 +++ b/include/linux/stmmac.h
  98 @@ -99,6 +99,7 @@ struct plat_stmmacenet_data {
  99         int phy_addr;
 100         int interface;
 101         struct stmmac_mdio_bus_data *mdio_bus_data;
 102 +       struct device_node *phy_node;
 103         struct stmmac_dma_cfg *dma_cfg;
 104         int clk_csr;
 105         int has_gmac;