From: Chunfeng Yun <chunfeng.yun@mediatek.com>
To: Chunfeng Yun <chunfeng.yun@mediatek.com>
Cc: <linux-mediatek@lists.infradead.org>
Subject: [PATCH v3 4/4] usb: xhci-mtk: support quirk to disable usb2 lpm
Date: Tue, 30 Mar 2021 14:02:37 +0800 [thread overview]
Message-ID: <1617084157-18652-4-git-send-email-chunfeng.yun@mediatek.com> (raw)
In-Reply-To: <1617084157-18652-1-git-send-email-chunfeng.yun@mediatek.com>
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>
---
v2~3: no changes
---
drivers/usb/host/xhci-mtk.c | 3 +++
drivers/usb/host/xhci-mtk.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c
index 4e3d53cc24f4..744639d23fa8 100644
--- a/drivers/usb/host/xhci-mtk.c
+++ b/drivers/usb/host/xhci-mtk.c
@@ -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);
diff --git a/drivers/usb/host/xhci-mtk.h b/drivers/usb/host/xhci-mtk.h
index 621ec1a85009..4ccd08e20a15 100644
--- a/drivers/usb/host/xhci-mtk.h
+++ b/drivers/usb/host/xhci-mtk.h
@@ -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;
--
2.18.0
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next prev parent reply other threads:[~2021-03-30 6:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-30 6:02 [PATCH v3 1/4] dt-bindings: usb: mtk-xhci: support property usb2-lpm-disable Chunfeng Yun
2021-03-30 6:02 ` [PATCH v3 2/4] dt-bindings: usb: mtk-xhci: remove redefinitions of usb3-lpm-capable Chunfeng Yun
2021-03-30 6:02 ` [PATCH v3 3/4] usb: xhci-mtk: fix broken streams issue on 0.96 xHCI Chunfeng Yun
2021-03-30 10:28 ` Frank Wunderlich
2021-03-30 6:02 ` Chunfeng Yun [this message]
-- strict thread matches above, loose matches on Subject: below --
2021-03-29 7:20 [PATCH v3 1/4] dt-bindings: usb: mtk-xhci: support property usb2-lpm-disable Chunfeng Yun
2021-03-29 7:20 ` [PATCH v3 4/4] usb: xhci-mtk: support quirk to disable usb2 lpm Chunfeng Yun
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