diff options
| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2021-03-31 12:05:53 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-02 16:56:49 +0300 |
| commit | bee1f89aad2a51cd3339571bc8eadbb0dc88a683 (patch) | |
| tree | e12b7db505323688f3e80c5dea1a37cf353aedb8 | |
| parent | 1f743c8749eacd906dd3ce402b7cd540bb69ad3e (diff) | |
| download | linux-bee1f89aad2a51cd3339571bc8eadbb0dc88a683.tar.xz | |
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: 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>
| -rw-r--r-- | drivers/usb/host/xhci-mtk.c | 3 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-mtk.h | 1 |
2 files changed, 4 insertions, 0 deletions
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; |