Messages in this thread | | | From | Felipe Balbi <> | Subject | Re: [RESEND PATCH v2 7/7] usb: xhci: plat: add vbus regulator control | Date | Wed, 27 Apr 2016 13:25:27 +0300 |
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Hi,
Mark Brown <broonie@kernel.org> writes: > On Wed, Apr 27, 2016 at 08:37:20AM +0300, Felipe Balbi wrote: >> Jisheng Zhang <jszhang@marvell.com> writes: > >> > + vbus = devm_regulator_get(&pdev->dev, "vbus"); > >> devm_regulator_get_optional() ?? > > Does USB work without a VBUS? Unless the answer is yes then I'd expect
<joke> it can, just source VBUS from a lab power supply </joke>
> this to be just a normal regulator_get().
jokes aside, this regulator is optional because not all platforms require a SW controlled regulator, no ? Will normal regulator_get() give us a dummy regulator in case it's not listed in DT/ACPI ?
-- balbi [unhandled content-type:application/pgp-signature]
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