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stmmac: add phy-handle support to the platform layer

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On stmmac driver, PHY specification in device-tree was done using the
non-standard property "snps,phy-addr". Specifying a PHY on a different
MDIO bus that the one within the stmmac controller doesn't seem to be
possible when device-tree is used.

This change adds support for the phy-handle property, as specified in
Documentation/devicetree/bindings/net/ethernet.txt.

Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mathieu Olivari 2015-05-27 11:02:47 -07:00 committed by David S. Miller
parent f7b81d67d0
commit 5790cf3c00
3 changed files with 24 additions and 11 deletions
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28
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
View file

@ -52,6 +52,7 @@
#include "stmmac_ptp.h"
#include "stmmac.h"
#include <linux/reset.h>
#include <linux/of_mdio.h>
#define STMMAC_ALIGN(x) L1_CACHE_ALIGN(x)
@ -816,18 +817,25 @@ static int stmmac_init_phy(struct net_device *dev)
priv->speed = 0;
priv->oldduplex = -1;
if (priv->plat->phy_bus_name)
snprintf(bus_id, MII_BUS_ID_SIZE, "%s-%x",
priv->plat->phy_bus_name, priv->plat->bus_id);
else
snprintf(bus_id, MII_BUS_ID_SIZE, "stmmac-%x",
priv->plat->bus_id);
if (priv->plat->phy_node) {
phydev = of_phy_connect(dev, priv->plat->phy_node,
&stmmac_adjust_link, 0, interface);
} else {
if (priv->plat->phy_bus_name)
snprintf(bus_id, MII_BUS_ID_SIZE, "%s-%x",
priv->plat->phy_bus_name, priv->plat->bus_id);
else
snprintf(bus_id, MII_BUS_ID_SIZE, "stmmac-%x",
priv->plat->bus_id);
snprintf(phy_id_fmt, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, bus_id,
priv->plat->phy_addr);
pr_debug("stmmac_init_phy: trying to attach to %s\n", phy_id_fmt);
snprintf(phy_id_fmt, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, bus_id,
priv->plat->phy_addr);
pr_debug("stmmac_init_phy: trying to attach to %s\n",
phy_id_fmt);
phydev = phy_connect(dev, phy_id_fmt, &stmmac_adjust_link, interface);
phydev = phy_connect(dev, phy_id_fmt, &stmmac_adjust_link,
interface);
}
if (IS_ERR(phydev)) {
pr_err("%s: Could not attach to PHY\n", dev->name);

6
drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
View file

@ -28,6 +28,7 @@
#include <linux/of.h>
#include <linux/of_net.h>
#include <linux/of_device.h>
#include <linux/of_mdio.h>
#include "stmmac.h"
#include "stmmac_platform.h"
@ -144,13 +145,16 @@ static int stmmac_probe_config_dt(struct platform_device *pdev,
/* Default to phy auto-detection */
plat->phy_addr = -1;
/* If we find a phy-handle property, use it as the PHY */
plat->phy_node = of_parse_phandle(np, "phy-handle", 0);
/* "snps,phy-addr" is not a standard property. Mark it as deprecated
* and warn of its use. Remove this when phy node support is added.
*/
if (of_property_read_u32(np, "snps,phy-addr", &plat->phy_addr) == 0)
dev_warn(&pdev->dev, "snps,phy-addr property is deprecated\n");
if (plat->phy_bus_name)
if (plat->phy_node || plat->phy_bus_name)
plat->mdio_bus_data = NULL;
else
plat->mdio_bus_data =

1
include/linux/stmmac.h
View file

@ -99,6 +99,7 @@ struct plat_stmmacenet_data {
int phy_addr;
int interface;
struct stmmac_mdio_bus_data *mdio_bus_data;
struct device_node *phy_node;
struct stmmac_dma_cfg *dma_cfg;
int clk_csr;
int has_gmac;