linux-kernel - Re: [PATCH] ARM: DRA7-evm: Enable SATA PHY and USB PHY power supplies

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Message-ID: <20140626073115.GD28884@atomide.com>
Date:	Thu, 26 Jun 2014 00:31:16 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	Nishanth Menon <nm@...com>
Cc:	Roger Quadros <rogerq@...com>, rnayak@...com, balbi@...com,
	nsekhar@...com, kishon@...com, george.cherian@...com,
	linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: DRA7-evm: Enable SATA PHY and USB PHY power supplies

* Nishanth Menon <nm@...com> [140625 15:29]:
> On 06/25/2014 07:56 AM, Roger Quadros wrote:
> > The SATA and USB PHYs need the 1.8V and 3.3V supplies.
> > The PHY drivers/framework don't yet support regulator
> > supply so we have to keep these regulators always-on till
> > then.
> > 
> > Signed-off-by: Roger Quadros <rogerq@...com>
> > ---
> >  arch/arm/boot/dts/dra7-evm.dts | 2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts
> > index 4adc280..99a1f79 100644
> > --- a/arch/arm/boot/dts/dra7-evm.dts
> > +++ b/arch/arm/boot/dts/dra7-evm.dts
> > @@ -241,6 +241,7 @@
> >  					regulator-min-microvolt = <1800000>;
> >  					regulator-max-microvolt = <1800000>;
> >  					regulator-boot-on;
> > +					regulator-always-on;
> >  				};
> >  
> >  				ldo9_reg: ldo9 {
> > @@ -266,6 +267,7 @@
> >  					regulator-min-microvolt = <3300000>;
> >  					regulator-max-microvolt = <3300000>;
> >  					regulator-boot-on;
> > +					regulator-always-on;
> >  				};
> >  			};
> >  		};
> > 
> 
> Why not fix phy driver/framework as needed? the trouble is people
> always forget to remove always-on... who actually audits old logs and
> fixes stuff back up?

Yes I agree let's not play with the regulator-always-on unless
absolutely necessary.

Regards,

Tony
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