power: pmic: stpmu1: Add regulator bindings

Add regulator bindings to get access to regulator managed
by drivers/power/regulator/stpmu1.c regulator driver.

Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

drivers/power/pmic/stpmu1.c

@@ -12,6 +12,17 @@
 
 #define STMPU1_NUM_OF_REGS 0x100
 
+#ifndef CONFIG_SPL_BUILD
+static const struct pmic_child_info stpmu1_children_info[] = {
+	{ .prefix = "ldo", .driver = "stpmu1_ldo" },
+	{ .prefix = "buck", .driver = "stpmu1_buck" },
+	{ .prefix = "vref_ddr", .driver = "stpmu1_vref_ddr" },
+	{ .prefix = "pwr_sw", .driver = "stpmu1_pwr_sw" },
+	{ .prefix = "boost", .driver = "stpmu1_boost" },
+	{ },
+};
+#endif /* CONFIG_SPL_BUILD */
+
 static int stpmu1_reg_count(struct udevice *dev)
 {
 	return STMPU1_NUM_OF_REGS;
@@ -42,6 +53,28 @@ static int stpmu1_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
 	return ret;
 }
 
+static int stpmu1_bind(struct udevice *dev)
+{
+#ifndef CONFIG_SPL_BUILD
+	ofnode regulators_node;
+	int children;
+
+	regulators_node = dev_read_subnode(dev, "regulators");
+	if (!ofnode_valid(regulators_node)) {
+		dev_dbg(dev, "regulators subnode not found!");
+		return -ENXIO;
+	}
+	dev_dbg(dev, "found regulators subnode\n");
+
+	children = pmic_bind_children(dev, regulators_node,
+				      stpmu1_children_info);
+	if (!children)
+		dev_dbg(dev, "no child found\n");
+#endif /* CONFIG_SPL_BUILD */
+
+	return 0;
+}
+
 static struct dm_pmic_ops stpmu1_ops = {
 	.reg_count = stpmu1_reg_count,
 	.read = stpmu1_read,
@@ -57,5 +90,6 @@ U_BOOT_DRIVER(pmic_stpmu1) = {
 	.name = "stpmu1_pmic",
 	.id = UCLASS_PMIC,
 	.of_match = stpmu1_ids,
+	.bind = stpmu1_bind,
 	.ops = &stpmu1_ops,
 };