Commit 7b104f89 authored by Lubomir Rintel's avatar Lubomir Rintel Committed by Greg Kroah-Hartman
Browse files

USB: EHCI: ehci-mv: add HSIC support 



Some special dance is needed to initialize the HSIC port.

Signed-off-by: default avatarLubomir Rintel <lkundrak@v3.sk>
Acked-by: default avatarAlan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20191221065008.266445-2-lkundrak@v3.sk


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 92f98352

drivers/usb/host/ehci-mv.c

+11 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 
#include <linux/clk.h>

#include <linux/err.h>

#include <linux/usb/otg.h>

#include <linux/usb/of.h>

#include <linux/platform_data/mv_usb.h>

#include <linux/io.h>
@@ -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;

}

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