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usb: xhci-mtk: support quirk to disable usb2 lpm

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[ Upstream commit bee1f89aad2a51cd3339571bc8eadbb0dc88a683 ]

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: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1617181553-3503-4-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chunfeng Yun 2021-03-31 17:05:53 +08:00 committed by Greg Kroah-Hartman
parent 5c22421fb3
commit e22fd53151
2 changed files with 4 additions and 0 deletions
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3
drivers/usb/host/xhci-mtk.c
View File

@ -397,6 +397,8 @@ 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,
@ -469,6 +471,7 @@ 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);

1
drivers/usb/host/xhci-mtk.h
View File

@ -150,6 +150,7 @@ 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;