Commit be30fc4b authored by Aguilar Pena, Leed's avatar Aguilar Pena, Leed Committed by Greg Kroah-Hartman
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USB: twl4030: Enable USB regulators before enabling USB charging

For TWL family of power management ICs, USB charging works only
when USB regulators are in enabled state: 3v1, 1v5, 1v8

On a USB cable attach, twl4030_phy_resume(twl) function enables
the regulators. Enable USB charging, only after all regulators
are enabled.

Its observed that enabling USB charging before regulators are
enabled, causes USB charging to fail.

Tested on: Zoom2: omap3430: ES3.1 + TWL5030
Needs T2-MADC and T2-BCI drivers which are still not upstreamed.
Signed-off-by: default avatarMoiz Sonasath <>
Signed-off-by: default avatarLeed Aguilar <>
Acked-by: default avatarVikram Pandita <>
Acked-by: default avatarAnand Gadiyar <>
Acked-by: default avatarNishanth Menon <>
Acked-by: default avatarFelipe Balbi <>
Signed-off-by: default avatarGreg Kroah-Hartman <>
parent ec412b92
......@@ -598,12 +598,12 @@ static irqreturn_t twl4030_usb_irq(int irq, void *_twl)
* USB_LINK_VBUS state. musb_hdrc won't care until it
* starts to handle softconnect right.
twl4030charger_usb_en(status == USB_LINK_VBUS);
if (status == USB_LINK_NONE)
twl4030_phy_suspend(twl, 0);
twl4030charger_usb_en(status == USB_LINK_VBUS);
sysfs_notify(&twl->dev->kobj, NULL, "vbus");
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