[PATCH 01/10] generic-phy: add generic_phy_get_by_node()

[Neil Armstrong]

Add generic_phy_get_by_node() to get a PHY phandle from a node instead
of a udevice.

Signed-off-by: Neil Armstrong <narmstrong at baylibre.com>
---
 drivers/phy/phy-uclass.c | 17 ++++++++++++-----
 include/generic-phy.h    | 27 +++++++++++++++++++++++++++
 2 files changed, 39 insertions(+), 5 deletions(-)

diff --git a/drivers/phy/phy-uclass.c b/drivers/phy/phy-uclass.c
index e201a90c8c..de2c3d2b8e 100644
--- a/drivers/phy/phy-uclass.c
+++ b/drivers/phy/phy-uclass.c
@@ -31,20 +31,20 @@ static int generic_phy_xlate_offs_flags(struct phy *phy,
 	return 0;
 }
 
-int generic_phy_get_by_index(struct udevice *dev, int index,
-			     struct phy *phy)
+int generic_phy_get_by_node(ofnode node, int index, struct phy *phy)
 {
 	struct ofnode_phandle_args args;
 	struct phy_ops *ops;
 	struct udevice *phydev;
 	int i, ret;
 
-	debug("%s(dev=%p, index=%d, phy=%p)\n", __func__, dev, index, phy);
+	debug("%s(node=%s, index=%d, phy=%p)\n",
+	      __func__, ofnode_get_name(node), index, phy);
 
 	assert(phy);
 	phy->dev = NULL;
-	ret = dev_read_phandle_with_args(dev, "phys", "#phy-cells", 0, index,
-					 &args);
+	ret = ofnode_parse_phandle_with_args(node, "phys", "#phy-cells", 0,
+					     index, &args);
 	if (ret) {
 		debug("%s: dev_read_phandle_with_args failed: err=%d\n",
 		      __func__, ret);
@@ -88,6 +88,12 @@ int generic_phy_get_by_index(struct udevice *dev, int index,
 
 err:
 	return ret;
+}
+
+int generic_phy_get_by_index(struct udevice *dev, int index,
+			     struct phy *phy)
+{
+	return generic_phy_get_by_node(dev_ofnode(dev), index, phy);
 }
 
 int generic_phy_get_by_name(struct udevice *dev, const char *phy_name,
diff --git a/include/generic-phy.h b/include/generic-phy.h
index 95caf58341..5873ffb2e0 100644
--- a/include/generic-phy.h
+++ b/include/generic-phy.h
@@ -193,6 +193,33 @@ int generic_phy_power_off(struct phy *phy);
 int generic_phy_get_by_index(struct udevice *user, int index,
 			     struct phy *phy);
 
+/**
+ * generic_phy_get_by_node() - Get a PHY device by integer index on ofnode
+ *
+ * @node:	the device node
+ * @index:	The index in the list of available PHYs
+ * @phy:	A pointer to the PHY port
+ *
+ * This looks up a PHY device for a client device based on its ofnode and on
+ * its position in the list of the possible PHYs.
+ *
+ * example:
+ * usb1: usb_otg_ss at xxx {
+ *       compatible = "xxx";
+ *       reg = <xxx>;
+ *   .
+ *   .
+ *   phys = <&usb2_phy>, <&usb3_phy>;
+ *   .
+ *   .
+ * };
+ * the USB2 phy can be accessed by passing index '0' and the USB3 phy can
+ * be accessed by passing index '1'
+ *
+ * @return 0 if OK, or a negative error code
+ */
+int generic_phy_get_by_node(ofnode node, int index, struct phy *phy);
+
 /**
  * generic_phy_get_by_name() - Get a PHY device by its name.
  *
-- 
2.22.0