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USB: twl4030: Enable USB regulators before enabling USB charging

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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: Moiz Sonasath <[email protected]>
Signed-off-by: Leed Aguilar <[email protected]>
Acked-by: Vikram Pandita <[email protected]>
Acked-by: Anand Gadiyar <[email protected]>
Acked-by: Nishanth Menon <[email protected]>
Acked-by: Felipe Balbi <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Aguilar Pena, Leed 2009-11-20 11:32:53 -06:00 • committed by Greg Kroah-Hartman
commit be30fc4b65
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/otg/twl4030-usb.c
View file

@ -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);
else
twl4030_phy_resume(twl);
twl4030charger_usb_en(status == USB_LINK_VBUS);
}
sysfs_notify(&twl->dev->kobj, NULL, "vbus");