From: Mark Brown <broonie@kernel.org>
To: Felipe Balbi <felipe.balbi@linux.intel.com>
Cc: Jisheng Zhang <jszhang@marvell.com>,
mathias.nyman@linux.intel.com, gregkh@linuxfoundation.org,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
yendapally.reddy@broadcom.com
Subject: Re: [RESEND PATCH v2 7/7] usb: xhci: plat: add vbus regulator control
Date: Wed, 27 Apr 2016 11:35:21 +0100 [thread overview]
Message-ID: <20160427103521.GJ3217@sirena.org.uk> (raw)
In-Reply-To: <87oa8vmjqg.fsf@intel.com>
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On Wed, Apr 27, 2016 at 01:25:27PM +0300, Felipe Balbi wrote:
> Mark Brown <broonie@kernel.org> writes:
> > 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 ?
Yes we do that, but even regulators that are not software controlled
should really be described anyway since it's a much simpler rule for
people to understand, it ensures that we can just scale up on systems
where there does happen to be software control and it makes all the
resulting code much simpler and hence less error prone if we're not
randomly ignoring some errors.
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WARNING: multiple messages have this Message-ID (diff)
From: broonie@kernel.org (Mark Brown)
To: linux-arm-kernel@lists.infradead.org
Subject: [RESEND PATCH v2 7/7] usb: xhci: plat: add vbus regulator control
Date: Wed, 27 Apr 2016 11:35:21 +0100 [thread overview]
Message-ID: <20160427103521.GJ3217@sirena.org.uk> (raw)
In-Reply-To: <87oa8vmjqg.fsf@intel.com>
On Wed, Apr 27, 2016 at 01:25:27PM +0300, Felipe Balbi wrote:
> Mark Brown <broonie@kernel.org> writes:
> > 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 ?
Yes we do that, but even regulators that are not software controlled
should really be described anyway since it's a much simpler rule for
people to understand, it ensures that we can just scale up on systems
where there does happen to be software control and it makes all the
resulting code much simpler and hence less error prone if we're not
randomly ignoring some errors.
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next prev parent reply other threads:[~2016-04-27 10:35 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-26 12:57 [RESEND PATCH v2 0/7] usb: xhci-plat: support generic PHY and vbus regulator Jisheng Zhang
2016-04-26 12:57 ` Jisheng Zhang
2016-04-26 12:57 ` [RESEND PATCH v2 1/7] usb: xhci: plat: Fix suspend/resume when the optional clk exists Jisheng Zhang
2016-04-26 12:57 ` Jisheng Zhang
2016-04-27 5:25 ` Felipe Balbi
2016-04-27 5:25 ` Felipe Balbi
2016-04-27 5:46 ` Jisheng Zhang
2016-04-27 5:46 ` Jisheng Zhang
2016-04-26 12:57 ` [RESEND PATCH v2 2/7] usb: xhci: plat: attach the usb_phy to the correct hcd Jisheng Zhang
2016-04-26 12:57 ` Jisheng Zhang
2016-04-27 5:29 ` Felipe Balbi
2016-04-27 5:29 ` Felipe Balbi
2016-04-27 5:59 ` Jisheng Zhang
2016-04-27 5:59 ` Jisheng Zhang
2016-04-27 6:19 ` Felipe Balbi
2016-04-27 6:19 ` Felipe Balbi
2016-04-26 12:57 ` [RESEND PATCH v2 3/7] usb: xhci: plat: Fix suspend/resume when the optional usb_phy exists Jisheng Zhang
2016-04-26 12:57 ` Jisheng Zhang
2016-04-27 5:30 ` Felipe Balbi
2016-04-27 5:30 ` Felipe Balbi
2016-04-26 12:57 ` [RESEND PATCH v2 4/7] usb: xhci: plat: sort the headers in alphabetic order Jisheng Zhang
2016-04-26 12:57 ` Jisheng Zhang
2016-04-26 12:57 ` [RESEND PATCH v2 5/7] usb: xhci: plat: Remove checks for optional clock in error/remove path Jisheng Zhang
2016-04-26 12:57 ` Jisheng Zhang
2016-04-27 5:33 ` Felipe Balbi
2016-04-27 5:33 ` Felipe Balbi
2016-04-27 6:33 ` Jisheng Zhang
2016-04-27 6:33 ` Jisheng Zhang
2016-04-27 7:19 ` Felipe Balbi
2016-04-27 7:19 ` Felipe Balbi
2016-04-26 12:57 ` [RESEND PATCH v2 6/7] usb: xhci: plat: add generic PHY support Jisheng Zhang
2016-04-26 12:57 ` Jisheng Zhang
2016-04-27 5:35 ` Felipe Balbi
2016-04-27 5:35 ` Felipe Balbi
2016-04-27 6:46 ` Jisheng Zhang
2016-04-27 6:46 ` Jisheng Zhang
2016-04-27 7:21 ` Felipe Balbi
2016-04-27 7:21 ` Felipe Balbi
2016-04-27 7:57 ` Heikki Krogerus
2016-04-27 7:57 ` Heikki Krogerus
2016-04-27 9:34 ` Felipe Balbi
2016-04-27 9:34 ` Felipe Balbi
2016-04-26 12:57 ` [RESEND PATCH v2 7/7] usb: xhci: plat: add vbus regulator control Jisheng Zhang
2016-04-26 12:57 ` Jisheng Zhang
2016-04-27 5:37 ` Felipe Balbi
2016-04-27 5:37 ` Felipe Balbi
2016-04-27 9:57 ` Mark Brown
2016-04-27 9:57 ` Mark Brown
2016-04-27 10:25 ` Jisheng Zhang
2016-04-27 10:25 ` Jisheng Zhang
2016-04-27 13:24 ` Mark Brown
2016-04-27 13:24 ` Mark Brown
2016-04-27 10:25 ` Felipe Balbi
2016-04-27 10:25 ` Felipe Balbi
2016-04-27 10:35 ` Mark Brown [this message]
2016-04-27 10:35 ` Mark Brown
2016-04-27 10:38 ` Felipe Balbi
2016-04-27 10:38 ` Felipe Balbi
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