Commit f768e718 authored by Peter Chen's avatar Peter Chen Committed by Greg Kroah-Hartman
Browse files

usb: host: xhci-plat: add priv quirk for skip PHY initialization 



Some DRD controllers (eg, dwc3 & cdns3) have PHY management at
their own driver to cover both device and host mode, so add one
priv quirk for such users to skip PHY management from HCD core.

Reviewed-by: default avatarJun Li <jun.li@nxp.com>
Signed-off-by: default avatarPeter Chen <peter.chen@nxp.com>
Signed-off-by: default avatarMathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20200918131752.16488-5-mathias.nyman@linux.intel.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 93cb8f13

drivers/usb/host/xhci-plat.c

+6 −2
Original line number Diff line number Diff line
@@ -183,6 +183,8 @@ static int xhci_plat_probe(struct platform_device *pdev) 
	struct usb_hcd		*hcd;

	int			ret;

	int			irq;

	struct xhci_plat_priv	*priv = NULL;





	if (usb_disabled())

		return -ENODEV;
@@ -280,8 +282,7 @@ static int xhci_plat_probe(struct platform_device *pdev) 
		priv_match = dev_get_platdata(&pdev->dev);



	if (priv_match) {

		struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);



		priv = hcd_to_xhci_priv(hcd);

		/* Just copy data for now */

		*priv = *priv_match;

	}
@@ -329,6 +330,9 @@ static int xhci_plat_probe(struct platform_device *pdev) 


	hcd->tpl_support = of_usb_host_tpl_support(sysdev->of_node);

	xhci->shared_hcd->tpl_support = hcd->tpl_support;

	if (priv && (priv->quirks & XHCI_SKIP_PHY_INIT))

		hcd->skip_phy_initialization = 1;



	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);

	if (ret)

		goto disable_usb_phy;

drivers/usb/host/xhci.h

+1 −0
Original line number Diff line number Diff line
@@ -1876,6 +1876,7 @@ struct xhci_hcd { 
#define XHCI_RESET_PLL_ON_DISCONNECT	BIT_ULL(34)

#define XHCI_SNPS_BROKEN_SUSPEND    BIT_ULL(35)

#define XHCI_RENESAS_FW_QUIRK	BIT_ULL(36)

#define XHCI_SKIP_PHY_INIT	BIT_ULL(37)



	unsigned int		num_active_eps;

	unsigned int		limit_active_eps;

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