From: Roger Quadros <rogerq@ti.com>
To: Tony Lindgren <tony@atomide.com>, Nishanth Menon <nm@ti.com>
Cc: <rnayak@ti.com>, <balbi@ti.com>, <nsekhar@ti.com>,
<kishon@ti.com>, <george.cherian@ti.com>,
<linux-omap@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] ARM: DRA7-evm: Enable SATA PHY and USB PHY power supplies
Date: Thu, 26 Jun 2014 12:36:45 +0300 [thread overview]
Message-ID: <53ABE9AD.1000100@ti.com> (raw)
In-Reply-To: <20140626073115.GD28884@atomide.com>
On 06/26/2014 10:31 AM, Tony Lindgren wrote:
> * Nishanth Menon <nm@ti.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@ti.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.
>
Agreed. PHY framework must deal with this. Till then USB, SATA and most likely PCIe as well will not work on DRA7-evm.
cheers,
-roger
next prev parent reply other threads:[~2014-06-26 9:36 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-25 12:56 [PATCH] ARM: DRA7-evm: Enable SATA PHY and USB PHY power supplies Roger Quadros
2014-06-25 22:27 ` Nishanth Menon
2014-06-26 7:31 ` Tony Lindgren
2014-06-26 9:36 ` Roger Quadros [this message]
2014-06-26 14:22 ` Roger Quadros
2014-06-26 15:06 ` Tero Kristo
2014-06-30 7:55 ` Roger Quadros
2014-07-02 11:51 ` Roger Quadros
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