Some host controllers need addidional re-initialization
after ehci_reset() so we add .init_after_reset callback
which is requires to reinit the phy after controller reset.
Signed-off-by: Anand Moon <linux.am...@gmail.com>
---
drivers/usb/host/ehci-exynos.c | 20 +++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c
index b0f7bd4936..e6a542e092 100644
--- a/drivers/usb/host/ehci-exynos.c
+++ b/drivers/usb/host/ehci-exynos.c
@@ -143,6 +143,23 @@ static void exynos5_setup_usb_phy(struct exynos_usb_phy
*usb)
EHCICTRL_ENAINCR16);
}
+static int ehci_exynos_init_after_reset(struct ehci_ctrl *ehcntl)
+{
+ if (cpu_is_exynos4()) {
+ if (proid_is_exynos4412()) {
+ /*
+ * "usb reset" cmd: restart re-initialize the usb driver
+ */
+ exynos_usb_init();
+ }
+ }
+ return 0;
+}
+
+static const struct ehci_ops exynos_ehci_ops = {
+ .init_after_reset = ehci_exynos_init_after_reset,
+};
+
static void exynos4412_setup_usb_phy(struct exynos4412_usb_phy *usb)
{
writel(CLK_24MHZ, &usb->usbphyclk);
@@ -234,7 +251,8 @@ static int ehci_usb_probe(struct udevice *dev)
hcor = (struct ehci_hcor *)((uint32_t)ctx->hcd +
HC_LENGTH(ehci_readl(&ctx->hcd->cr_capbase)));
- return ehci_register(dev, ctx->hcd, hcor, NULL, 0, USB_INIT_HOST);
+ return ehci_register(dev, ctx->hcd, hcor, &exynos_ehci_ops,
+ 0, USB_INIT_HOST);
}
static int ehci_usb_remove(struct udevice *dev)
--
2.21.0
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