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.

Chunfeng Yun committed 5 years ago

Commit bee1f891 parent 1f743c82 files · +4 −0Browse files

Unified · Split

2 files

@@ -411,6 +411,8 @@ static void xhci_mtk_quirks(struct device dev, struct xhci_hcd xhci) · 410 unmodified lines
411	411	xhci->quirks \|= XHCI_SPURIOUS_SUCCESS;
412	412	if (mtk->lpm_support)
413	413	xhci->quirks \|= XHCI_LPM_SUPPORT;
	414	+ if (mtk->u2_lpm_disable)
	415	+ xhci->quirks \|= XHCI_HW_LPM_DISABLE;
414	416
415	417	/*
416	418	* 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) · 76 unmodified lines
493	495	return ret;
494	496
495	497	mtk->lpm_support = of_property_read_bool(node, "usb3-lpm-capable");
	498	+ mtk->u2_lpm_disable = of_property_read_bool(node, "usb2-lpm-disable");
496	499	/* optional property, ignore the error if it does not exist */
497	500	of_property_read_u32(node, "mediatek,u3p-dis-msk",
498	501	&mtk->u3p_dis_msk);

@@ -149,6 +149,7 @@ struct xhci_hcd_mtk { · 148 unmodified lines
149	149	struct phy **phys;
150	150	int num_phys;
151	151	bool lpm_support;
	152	+ bool u2_lpm_disable;
152	153	/* usb remote wakeup */
153	154	bool uwk_en;
154	155	struct regmap *uwk;