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@@ -10,6 +10,16 @@
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#include <dm/device-internal.h>
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#include <dm/uclass-internal.h>
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+/* DT node properties for MAC-PHY interface */
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+#define PHY_MODE_STR_CNT 2
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+static const char *phy_mode_str[PHY_MODE_STR_CNT] = { "phy-mode",
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+ "phy-connection-type" };
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+/* DT node properties that reference a PHY node */
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+#define PHY_HANDLE_STR_CNT 3
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+const char *phy_handle_str[PHY_HANDLE_STR_CNT] = { "phy-handle",
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+ "phy",
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+ "phy-device" };
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+
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void dm_mdio_probe_devices(void)
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{
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struct udevice *it;
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@@ -116,6 +126,86 @@ struct phy_device *dm_mdio_phy_connect(struct udevice *mdiodev, int phyaddr,
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return phy_connect(pdata->mii_bus, phyaddr, ethdev, interface);
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}
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+static struct phy_device *dm_eth_connect_phy_handle(struct udevice *ethdev,
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+ phy_interface_t interface)
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+{
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+ u32 phy_addr;
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+ struct udevice *mdiodev;
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+ struct phy_device *phy;
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+ struct ofnode_phandle_args phandle = {.node = ofnode_null()};
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+ int i;
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+
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+ for (i = 0; i < PHY_HANDLE_STR_CNT; i++)
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+ if (!dev_read_phandle_with_args(ethdev, phy_handle_str[i], NULL,
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+ 0, 0, &phandle))
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+ break;
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+
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+ if (!ofnode_valid(phandle.node)) {
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+ dev_dbg(dev, "can't find PHY node\n");
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+ return NULL;
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+ }
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+
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+ /*
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+ * reading 'reg' directly should be fine. This is a PHY node, the
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+ * address is always size 1 and requires no translation
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+ */
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+ if (ofnode_read_u32(phandle.node, "reg", &phy_addr)) {
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+ dev_dbg(ethdev, "missing reg property in phy node\n");
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+ return NULL;
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+ }
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+
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+ if (uclass_get_device_by_ofnode(UCLASS_MDIO,
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+ ofnode_get_parent(phandle.node),
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+ &mdiodev)) {
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+ dev_dbg(dev, "can't find MDIO bus for node %s\n",
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+ ofnode_get_name(ofnode_get_parent(phandle.node)));
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+ return NULL;
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+ }
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+
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+ phy = dm_mdio_phy_connect(mdiodev, phy_addr, ethdev, interface);
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+
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+ if (phy)
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+ phy->node = phandle.node;
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+
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+ return phy;
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+}
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+
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+/* Connect to a PHY linked in eth DT node */
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+struct phy_device *dm_eth_phy_connect(struct udevice *ethdev)
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+{
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+ const char *if_str;
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+ phy_interface_t interface;
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+ struct phy_device *phy;
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+ int i;
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+
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+ if (!ofnode_valid(ethdev->node)) {
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+ debug("%s: supplied eth dev has no DT node!\n", ethdev->name);
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+ return NULL;
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+ }
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+
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+ interface = PHY_INTERFACE_MODE_NONE;
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+ for (i = 0; i < PHY_MODE_STR_CNT; i++) {
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+ if_str = ofnode_read_string(ethdev->node, phy_mode_str[i]);
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+ if (if_str) {
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+ interface = phy_get_interface_by_name(if_str);
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+ break;
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+ }
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+ }
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+ if (interface < 0)
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+ interface = PHY_INTERFACE_MODE_NONE;
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+ if (interface == PHY_INTERFACE_MODE_NONE)
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+ dev_dbg(ethdev, "can't find interface mode, default to NONE\n");
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+
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+ phy = dm_eth_connect_phy_handle(ethdev, interface);
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+
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+ if (!phy)
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+ return NULL;
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+
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+ phy->interface = interface;
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+
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+ return phy;
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+}
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+
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UCLASS_DRIVER(mdio) = {
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.id = UCLASS_MDIO,
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.name = "mdio",
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