So others can find out whether a firmware node depends on a phy as
specified in bindings/usb/nvidia,tegra20-ehci.txt.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
---
Changes in v2: None
drivers/usb/host/ehci-tegra.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index 4031b37..3665eaa 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -589,6 +589,18 @@ static const struct ehci_driver_overrides tegra_overrides __initconst = {
.reset = tegra_ehci_reset,
};
+static void tegra_ehci_get_dependencies(struct fwnode_handle *fwnode,
+ struct list_head *deps)
+{
+ struct device_node *np;
+
+ np = of_parse_phandle(to_of_node(fwnode), "nvidia,phy", 0);
+ if (!np)
+ return;
+
+ fwnode_add_dependency(&np->fwnode, deps);
+}
+
static int __init ehci_tegra_init(void)
{
if (usb_disabled())
@@ -611,6 +623,8 @@ static int __init ehci_tegra_init(void)
tegra_ehci_hc_driver.unmap_urb_for_dma = tegra_ehci_unmap_urb_for_dma;
tegra_ehci_hc_driver.hub_control = tegra_ehci_hub_control;
+ fwnode_add_dependency_parser(tegra_ehci_get_dependencies);
+
return platform_driver_register(&tegra_ehci_driver);
}
module_init(ehci_tegra_init);
@@ -618,6 +632,8 @@ module_init(ehci_tegra_init);
static void __exit ehci_tegra_cleanup(void)
{
platform_driver_unregister(&tegra_ehci_driver);
+
+ fwnode_remove_dependency_parser(tegra_ehci_get_dependencies);
}
module_exit(ehci_tegra_cleanup);
--
2.4.1
--
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