linux-kernel - Re: omap5 fixing palmas IRQ_TYPE_NONE warning leads to gpadc timeouts

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Date:   Mon, 26 Nov 2018 11:19:31 -0800
From:   Santosh Shilimkar <santosh.shilimkar@...cle.com>
To:     Tony Lindgren <tony@...mide.com>,
        Thierry Reding <treding@...dia.com>
Cc:     Peter Ujfalusi <peter.ujfalusi@...com>,
        Belisko Marek <marek.belisko@...il.com>,
        LKML <linux-kernel@...r.kernel.org>, linux-omap@...r.kernel.org,
        "Dr. H. Nikolaus Schaller" <hns@...delico.com>,
        Laxman Dewangan <ldewangan@...dia.com>,
        Jon Hunter <jonathanh@...dia.com>
Subject: Re: omap5 fixing palmas IRQ_TYPE_NONE warning leads to gpadc timeouts

On 11/26/2018 11:14 AM, Tony Lindgren wrote:
> * Thierry Reding <treding@...dia.com> [181126 10:14]:
>> On Mon, Nov 19, 2018 at 09:14:06AM -0800, Tony Lindgren wrote:
>>> Well so commit 7e9d474954f4 ("ARM: tegra: Correct polarity for
>>> Tegra114 PMIC interrupt") states that tegra114 inverts the
>>> polarity of the PMIC interrupt. So adding Jon and Thierry to Cc.
>>>
>>> So it seems that commit df545d1cd01a ("mfd: palmas: Provide
>>> irq flags through DT/platform data") wrongly sets the
>>> PALMAS_POLARITY_CTRL_INT_POLARITY on IRQ_TYPE_LEVEL_HIGH
>>> while it should set it on IRQ_TYPE_LEVEL_LOW.
>>
>> Oops, sorry, you seem to have come to pretty much the same conclusion as
>> I did. I think what we need to do is find a copy of the TRM and see what
>> exactly the right behaviour is. Or we need to find someone that can take
>> measurements of the PMIC interrupt pin.
> 
> Yeah so either tegra inverts the PMIC interrupt twice now,
> or we have also omap5 wkupgen also inverting the PMIC interrupt
> once.. Santosh, do you remember if omap5 wkupgen might be
> inverting the palmas interrupt?
> 
 From the memory, omap5 wakeupgen doesn't invert the irqlines and
not anything specific to PMIC specially either.