This patch adds support for the 'phy-handle' binding which allows for a
system to specifically select a phy which can be attached via any MDIO
bus available in the system.
Signed-off-by: Nathan Rossi <nat...@nathanrossi.com>
Cc: Nicolas Ferre <nicolas.fe...@atmel.com>
---
drivers/net/ethernet/cadence/macb.c | 58 ++++++++++++++++++++++---------------
drivers/net/ethernet/cadence/macb.h | 1 +
2 files changed, 36 insertions(+), 23 deletions(-)
diff --git a/drivers/net/ethernet/cadence/macb.c
b/drivers/net/ethernet/cadence/macb.c
index 50c9410..ea8ec32 100644
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c
@@ -375,27 +375,37 @@ static int macb_mii_probe(struct net_device *dev)
int phy_irq;
int ret;
- phydev = phy_find_first(bp->mii_bus);
- if (!phydev) {
- netdev_err(dev, "no PHY found\n");
- return -ENXIO;
- }
+ if (bp->phy_node) {
+ phydev = of_phy_connect(dev, bp->phy_node,
+ &macb_handle_link_change, 0,
+ bp->phy_interface);
+ if (!phydev)
+ return -EPROBE_DEFER;
+ } else {
+ phydev = phy_find_first(bp->mii_bus);
+ if (!phydev) {
+ netdev_err(dev, "no PHY found\n");
+ return -ENXIO;
+ }
- pdata = dev_get_platdata(&bp->pdev->dev);
- if (pdata && gpio_is_valid(pdata->phy_irq_pin)) {
- ret = devm_gpio_request(&bp->pdev->dev, pdata->phy_irq_pin,
"phy int");
- if (!ret) {
- phy_irq = gpio_to_irq(pdata->phy_irq_pin);
- phydev->irq = (phy_irq < 0) ? PHY_POLL : phy_irq;
+ pdata = dev_get_platdata(&bp->pdev->dev);
+ if (pdata && gpio_is_valid(pdata->phy_irq_pin)) {
+ ret = devm_gpio_request(&bp->pdev->dev,
+ pdata->phy_irq_pin, "phy int");
+ if (!ret) {
+ phy_irq = gpio_to_irq(pdata->phy_irq_pin);
+ phydev->irq = (phy_irq < 0) ? PHY_POLL :
+ phy_irq;
+ }
}
- }
- /* attach the mac to the phy */
- ret = phy_connect_direct(dev, phydev, &macb_handle_link_change,
- bp->phy_interface);
- if (ret) {
- netdev_err(dev, "Could not attach to PHY\n");
- return ret;
+ /* attach the mac to the phy */
+ ret = phy_connect_direct(dev, phydev, &macb_handle_link_change,
+ bp->phy_interface);
+ if (ret) {
+ netdev_err(dev, "Could not attach to PHY\n");
+ return ret;
+ }
}
/* mask with MAC supported features */
@@ -2821,7 +2831,6 @@ static int macb_probe(struct platform_device *pdev)
= macb_clk_init;
int (*init)(struct platform_device *) = macb_init;
struct device_node *np = pdev->dev.of_node;
- struct device_node *phy_node;
const struct macb_config *macb_config = NULL;
struct clk *pclk, *hclk = NULL, *tx_clk = NULL;
unsigned int queue_mask, num_queues;
@@ -2909,15 +2918,18 @@ static int macb_probe(struct platform_device *pdev)
else
macb_get_hwaddr(bp);
+ bp->phy_node = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0);
+ /* If phy-handle not provided assume first child is the phy node. */
+ if (!bp->phy_node)
+ bp->phy_node = of_get_next_available_child(np, NULL);
+
/* Power up the PHY if there is a GPIO reset */
- phy_node = of_get_next_available_child(np, NULL);
- if (phy_node) {
- int gpio = of_get_named_gpio(phy_node, "reset-gpios", 0);
+ if (bp->phy_node) {
+ int gpio = of_get_named_gpio(bp->phy_node, "reset-gpios", 0);
if (gpio_is_valid(gpio))
bp->reset_gpio = gpio_to_desc(gpio);
gpiod_set_value(bp->reset_gpio, GPIOD_OUT_HIGH);
}
- of_node_put(phy_node);
err = of_get_phy_mode(np);
if (err < 0) {
diff --git a/drivers/net/ethernet/cadence/macb.h
b/drivers/net/ethernet/cadence/macb.h
index 0d4ecfc..0373aa47 100644
--- a/drivers/net/ethernet/cadence/macb.h
+++ b/drivers/net/ethernet/cadence/macb.h
@@ -822,6 +822,7 @@ struct macb {
struct mii_bus *mii_bus;
struct phy_device *phy_dev;
+ struct device_node *phy_node;
int link;
int speed;
int duplex;
--
2.7.0
