linux-kernel - Re: [PATCH V2] ARM: tegra: enable palmas device for dalmore

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Message-ID: <51E43189.5050805@nvidia.com>
Date:	Mon, 15 Jul 2013 13:29:45 -0400
From:	Rhyland Klein <rklein@...dia.com>
To:	Laxman Dewangan <ldewangan@...dia.com>
CC:	Stephen Warren <swarren@...dotorg.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2] ARM: tegra: enable palmas device for dalmore

On 7/15/2013 1:28 PM, Laxman Dewangan wrote:
> On Monday 15 July 2013 10:18 PM, Stephen Warren wrote:
>> On 07/10/2013 01:37 AM, Laxman Dewangan wrote:
>>> Make the entry of Dalmore Power Management Unit device TPS65913
>>> in dalmore DTS file. The Palma driver support this device.
>>>
>>> Enable following submodule of the TPS65913:
>>> - GPIO driver
>>> - RTC driver.
>>> - Power regulator driver.
>> If I apply this, (at least) the SD card no longer works. I assume the
>> regulator for it is being turned off somehow.
> 
> As per downstream power tree, smps9 is feeding power to sd slot and I 
> make this rail as always ON. So there should not be any issue.
> 
> Rhyland,
> Do you see any differences on this power tree with your power tree with 
> DT? There was discussion sometime ago on the sdcard. Am I missing 
> anything here?
> 
> Thanks,
> Laxman
> 


I noticed a couple differences between this and what we are using...

Yours:
+			    ldo8-in-supply = <&tps65090_dcdc3_reg>;
+			    ldo9-in-supply = <&palmas_smps9_reg>;
Ours:
                            ldo8-in-supply = <&tps65090_dcdc2_reg>;
                            ldo9-in-supply = <&tps65090_dcdc2_reg>;

We also specify supplies (floating) for smps6 and smps10.  I don't think
that matters though.

Also we have the vmmc-supply and sd-slot-supply propeties set for the sd
card slot, like so:

                vmmc-supply = <&palmas_smps3_reg>;
                sd-slot-supply = <&palmas_smps9_reg>;

Also, we have the interrupt trigger mode different for the palmas:

Yours:
+			interrupts = <0 86 0x4>;
Ours:
                        interrupts = <0 86 0x8>;


I think other than that they should be the same.

-Rhyland

-- 
nvpublic
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