From: JC Kuo <jckuo@nvidia.com>
To: <mathias.nyman@linux.intel.com>, <gregkh@linuxfoundation.org>,
<thierry.reding@gmail.com>, <jonathanh@nvidia.com>
Cc: <linux-tegra@vger.kernel.org>, <linux-usb@vger.kernel.org>,
<nkristam@nvidia.com>, JC Kuo <jckuo@nvidia.com>
Subject: [PATCH] usb: host: xhci-tegra: Tegra186/Tegra194 LPM
Date: Mon, 24 Feb 2020 14:21:45 +0800 [thread overview]
Message-ID: <20200224062145.25785-1-jckuo@nvidia.com> (raw)
Tegra186 and Tegra194 xHC supports USB 3.0 LPM. This commit enables
XHCI_LPM_SUPPORT quirk for Tegra186 and Tegra194.
Signed-off-by: JC Kuo <jckuo@nvidia.com>
---
drivers/usb/host/xhci-tegra.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c
index 8163aefc6c6b..a6e36b3c968f 100644
--- a/drivers/usb/host/xhci-tegra.c
+++ b/drivers/usb/host/xhci-tegra.c
@@ -203,6 +203,7 @@ struct tegra_xusb_soc {
bool scale_ss_clock;
bool has_ipfs;
+ bool lpm_support;
};
struct tegra_xusb_context {
@@ -1779,6 +1780,7 @@ static const struct tegra_xusb_soc tegra186_soc = {
.data_out = 0xec,
.owner = 0xf0,
},
+ .lpm_support = true,
};
static const char * const tegra194_supply_names[] = {
@@ -1808,6 +1810,7 @@ static const struct tegra_xusb_soc tegra194_soc = {
.data_out = 0x70,
.owner = 0x74,
},
+ .lpm_support = true,
};
MODULE_FIRMWARE("nvidia/tegra194/xusb.bin");
@@ -1832,7 +1835,11 @@ static struct platform_driver tegra_xusb_driver = {
static void tegra_xhci_quirks(struct device *dev, struct xhci_hcd *xhci)
{
+ struct tegra_xusb *tegra = dev_get_drvdata(dev);
+
xhci->quirks |= XHCI_PLAT;
+ if (tegra && tegra->soc->lpm_support)
+ xhci->quirks |= XHCI_LPM_SUPPORT;
}
static int tegra_xhci_setup(struct usb_hcd *hcd)
--
2.17.1
next reply other threads:[~2020-02-24 6:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-24 6:21 JC Kuo [this message]
2020-02-24 10:51 ` [PATCH] usb: host: xhci-tegra: Tegra186/Tegra194 LPM Mathias Nyman
2020-02-24 12:51 ` Thierry Reding
2020-02-26 8:12 ` JC Kuo
2020-02-26 9:32 ` Mathias Nyman
2020-02-27 2:03 ` JC Kuo
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