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path: root/drivers/usb/host/ehci-exynos.c
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Diffstat (limited to 'drivers/usb/host/ehci-exynos.c')
-rw-r--r--drivers/usb/host/ehci-exynos.c23
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c
index 3a29a1a8519c..01debfd03d4a 100644
--- a/drivers/usb/host/ehci-exynos.c
+++ b/drivers/usb/host/ehci-exynos.c
@@ -41,6 +41,7 @@ struct exynos_ehci_hcd {
struct clk *clk;
struct device_node *of_node;
struct phy *phy[PHY_NUMBER];
+ bool legacy_phy;
};
#define to_exynos_ehci(hcd) (struct exynos_ehci_hcd *)(hcd_to_ehci(hcd)->priv)
@@ -50,10 +51,22 @@ static int exynos_ehci_get_phy(struct device *dev,
{
struct device_node *child;
struct phy *phy;
- int phy_number;
+ int phy_number, num_phys;
int ret;
/* Get PHYs for the controller */
+ num_phys = of_count_phandle_with_args(dev->of_node, "phys",
+ "#phy-cells");
+ for (phy_number = 0; phy_number < num_phys; phy_number++) {
+ phy = devm_of_phy_get_by_index(dev, dev->of_node, phy_number);
+ if (IS_ERR(phy))
+ return PTR_ERR(phy);
+ exynos_ehci->phy[phy_number] = phy;
+ }
+ if (num_phys > 0)
+ return 0;
+
+ /* Get PHYs using legacy bindings */
for_each_available_child_of_node(dev->of_node, child) {
ret = of_property_read_u32(child, "reg", &phy_number);
if (ret) {
@@ -84,6 +97,7 @@ static int exynos_ehci_get_phy(struct device *dev,
}
}
+ exynos_ehci->legacy_phy = true;
return 0;
}
@@ -205,11 +219,12 @@ static int exynos_ehci_probe(struct platform_device *pdev)
ehci->caps = hcd->regs;
/*
- * Workaround: reset of_node pointer to avoid conflict between Exynos
- * EHCI port subnodes and generic USB device bindings
+ * Workaround: reset of_node pointer to avoid conflict between legacy
+ * Exynos EHCI port subnodes and generic USB device bindings
*/
exynos_ehci->of_node = pdev->dev.of_node;
- pdev->dev.of_node = NULL;
+ if (exynos_ehci->legacy_phy)
+ pdev->dev.of_node = NULL;
/* DMA burst Enable */
writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));