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| author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2014-12-18 05:43:43 +0100 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2014-12-18 05:43:43 +0100 |
| commit | 629b91fa046df5213ed3312d2e2b8683e6bdd70c (patch) | |
| tree | 49452c488fabe6e551dfff856a267cf486aaad76 /arch/arm/mach-tegra/tegra3_usb_phy.c | |
| parent | 18d5f4a85d71d7921e9b121aeefb9c12c888d781 (diff) | |
apalis/colibri_t30: usb: fix low-speed issue hack
Certain low-speed USB devices were not detected correctly when plugged
into a running system.
Diffstat (limited to 'arch/arm/mach-tegra/tegra3_usb_phy.c')
| -rw-r--r-- | arch/arm/mach-tegra/tegra3_usb_phy.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/tegra3_usb_phy.c b/arch/arm/mach-tegra/tegra3_usb_phy.c index 66637f29b19c..0ab61758addd 100644 --- a/arch/arm/mach-tegra/tegra3_usb_phy.c +++ b/arch/arm/mach-tegra/tegra3_usb_phy.c @@ -755,6 +755,9 @@ bool utmi_phy_remotewake_detected(struct tegra_usb_phy *phy) unsigned int inst = phy->inst; u32 val; + /* Hack: avoid system lock-up condition upon device hot-plugging */ + mdelay(4); + DBG("%s(%d) inst:[%d]\n", __func__, __LINE__, phy->inst); val = readl(base + UTMIP_PMC_WAKEUP0); if (val & EVENT_INT_ENB) { |