Commit bee1f89a authored by Chunfeng Yun's avatar Chunfeng Yun Committed by Greg Kroah-Hartman
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usb: xhci-mtk: support quirk to disable usb2 lpm 



The xHCI driver support usb2 HW LPM by default, here add support
XHCI_HW_LPM_DISABLE quirk, then we can disable usb2 lpm when
need it.

Signed-off-by: default avatarChunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1617181553-3503-4-git-send-email-chunfeng.yun@mediatek.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 1f743c87

drivers/usb/host/xhci-mtk.c

+3 −0
Original line number Diff line number Diff line
@@ -411,6 +411,8 @@ static void xhci_mtk_quirks(struct device *dev, struct xhci_hcd *xhci) 
	xhci->quirks |= XHCI_SPURIOUS_SUCCESS;

	if (mtk->lpm_support)

		xhci->quirks |= XHCI_LPM_SUPPORT;

	if (mtk->u2_lpm_disable)

		xhci->quirks |= XHCI_HW_LPM_DISABLE;



	/*

	 * MTK xHCI 0.96: PSA is 1 by default even if doesn't support stream,
@@ -493,6 +495,7 @@ static int xhci_mtk_probe(struct platform_device *pdev) 
		return ret;



	mtk->lpm_support = of_property_read_bool(node, "usb3-lpm-capable");

	mtk->u2_lpm_disable = of_property_read_bool(node, "usb2-lpm-disable");

	/* optional property, ignore the error if it does not exist */

	of_property_read_u32(node, "mediatek,u3p-dis-msk",

			     &mtk->u3p_dis_msk);

drivers/usb/host/xhci-mtk.h

+1 −0
Original line number Diff line number Diff line
@@ -149,6 +149,7 @@ struct xhci_hcd_mtk { 
	struct phy **phys;

	int num_phys;

	bool lpm_support;

	bool u2_lpm_disable;

	/* usb remote wakeup */

	bool uwk_en;

	struct regmap *uwk;