@@ -131,15 +131,17 @@ EXPORT_SYMBOL_GPL(usb_get_dr_mode);
* of_usb_get_dr_mode_by_phy - Get dual role mode for the controller device
* which is associated with the given phy device_node
* @np: Pointer to the given phy device_node
+ * @arg0: phandle args[0] for phy's with #phy-cells >= 1, or -1 for
+ * phys which do not have phy-cells
*
* In dts a usb controller associates with phy devices. The function gets
* the string from property 'dr_mode' of the controller associated with the
* given phy device node, and returns the correspondig enum usb_dr_mode.
*/
-enum usb_dr_mode of_usb_get_dr_mode_by_phy(struct device_node *phy_np)
+enum usb_dr_mode of_usb_get_dr_mode_by_phy(struct device_node *np, int arg0)
{
struct device_node *controller = NULL;
- struct device_node *phy;
+ struct of_phandle_args args;
const char *dr_mode;
int index;
int err;
@@ -148,12 +150,24 @@ enum usb_dr_mode of_usb_get_dr_mode_by_phy(struct device_node *phy_np)
controller = of_find_node_with_property(controller, "phys");
index = 0;
do {
- phy = of_parse_phandle(controller, "phys", index);
- of_node_put(phy);
- if (phy == phy_np)
+ if (arg0 == -1) {
+ args.np = of_parse_phandle(controller, "phys",
+ index);
+ args.args_count = 0;
+ } else {
+ err = of_parse_phandle_with_args(controller,
+ "phys", "#phy-cells",
+ index, &args);
+ if (err)
+ break;
+ }
+
+ of_node_put(args.np);
+ if (args.np == np && (args.args_count == 0 ||
+ args.args[0] == arg0))
goto finish;
index++;
- } while (phy);
+ } while (args.np);
} while (controller);
finish:
@@ -54,7 +54,7 @@ static int am335x_phy_probe(struct platform_device *pdev)
return am_phy->id;
}
- am_phy->dr_mode = of_usb_get_dr_mode_by_phy(pdev->dev.of_node);
+ am_phy->dr_mode = of_usb_get_dr_mode_by_phy(pdev->dev.of_node, -1);
ret = usb_phy_gen_create_phy(dev, &am_phy->usb_phy_gen, NULL);
if (ret)
@@ -12,7 +12,7 @@
#include <linux/usb/phy.h>
#if IS_ENABLED(CONFIG_OF)
-enum usb_dr_mode of_usb_get_dr_mode_by_phy(struct device_node *phy_np);
+enum usb_dr_mode of_usb_get_dr_mode_by_phy(struct device_node *np, int arg0);
bool of_usb_host_tpl_support(struct device_node *np);
int of_usb_update_otg_caps(struct device_node *np,
struct usb_otg_caps *otg_caps);
@@ -20,7 +20,7 @@ struct device_node *usb_of_get_child_node(struct device_node *parent,
int portnum);
#else
static inline enum usb_dr_mode
-of_usb_get_dr_mode_by_phy(struct device_node *phy_np)
+of_usb_get_dr_mode_by_phy(struct device_node *np, int arg0)
{
return USB_DR_MODE_UNKNOWN;
}
Some SoCs have a single phy-hw-block with multiple phys, this is modelled by a single phy dts node, so we end up with multiple controller nodes with a phys property pointing to the phy-node of the otg-phy. Only one of these controllers typically is an otg controller, yet we were checking the first controller who uses a phy from the block and then end up looking for a dr_mode property in e.g. the ehci controller. This commit fixes this by adding an arg0 parameter to of_usb_get_dr_mode_by_phy and make of_usb_get_dr_mode_by_phy check that this matches the phandle args[0] value when looking for the otg controller. Signed-off-by: Hans de Goede <hdegoede@redhat.com> --- Changes in v2: -Add a arg0 parameter instead of looking for nodes with a dr_mode property Changes in v3: -No changes Changes in v4: -When arg0 == -1, use of_parse_phandle instead of of_parse_phandle_with_args because using of_parse_phandle_with_args breaks phy's which use the usb-phy bindings instead of the generic phy bindings --- drivers/usb/common/common.c | 26 ++++++++++++++++++++------ drivers/usb/phy/phy-am335x.c | 2 +- include/linux/usb/of.h | 4 ++-- 3 files changed, 23 insertions(+), 9 deletions(-)