From 7b104f890adea9b7ec554a491ac4d89a0a57ce96 Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Sat, 21 Dec 2019 07:50:06 +0100 Subject: [PATCH] USB: EHCI: ehci-mv: add HSIC support Some special dance is needed to initialize the HSIC port. Signed-off-by: Lubomir Rintel Acked-by: Alan Stern Link: https://lore.kernel.org/r/20191221065008.266445-2-lkundrak@v3.sk Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-mv.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/usb/host/ehci-mv.c b/drivers/usb/host/ehci-mv.c index 57e97903e7eb..91602e349208 100644 --- a/drivers/usb/host/ehci-mv.c +++ b/drivers/usb/host/ehci-mv.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include @@ -67,6 +68,8 @@ static int mv_ehci_reset(struct usb_hcd *hcd) { struct device *dev = hcd->self.controller; struct ehci_hcd_mv *ehci_mv = hcd_to_ehci_hcd_mv(hcd); + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + u32 status; int retval; if (ehci_mv == NULL) { @@ -80,6 +83,14 @@ static int mv_ehci_reset(struct usb_hcd *hcd) if (retval) dev_err(dev, "ehci_setup failed %d\n", retval); + if (of_usb_get_phy_mode(dev->of_node) == USBPHY_INTERFACE_MODE_HSIC) { + status = ehci_readl(ehci, &ehci->regs->port_status[0]); + status |= PORT_TEST_FORCE; + ehci_writel(ehci, status, &ehci->regs->port_status[0]); + status &= ~PORT_TEST_FORCE; + ehci_writel(ehci, status, &ehci->regs->port_status[0]); + } + return retval; }