diff options
| author | Lubomir Rintel <lkundrak@v3.sk> | 2019-12-21 07:50:06 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-30 20:11:29 +0100 |
| commit | 7b104f890adea9b7ec554a491ac4d89a0a57ce96 (patch) | |
| tree | d44aa1ee9d871b1946928ff55b48304ae9c38bef /drivers/usb/host | |
| parent | 92f983520cb82c407a091bbeabb505fc97419d3a (diff) | |
USB: EHCI: ehci-mv: add HSIC support
Some special dance is needed to initialize the HSIC port.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20191221065008.266445-2-lkundrak@v3.sk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/ehci-mv.c | 11 |
1 files changed, 11 insertions, 0 deletions
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 <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; } |