linux-kernel - Re: [PATCH 2/2] ARM: dts: omap3: keep ssi ports by default

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Date:	Wed, 14 Oct 2015 14:54:53 +0300
From:	Roger Quadros <rogerq@...com>
To:	Sebastian Reichel <sre@...nel.org>
CC:	<tony@...mide.com>, <pavel@....cz>, <pali.rohar@...il.com>,
	<linux-omap@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] ARM: dts: omap3: keep ssi ports by default

On 14/10/15 14:37, Sebastian Reichel wrote:
> Hi,
> 
> On Wed, Oct 14, 2015 at 02:27:27PM +0300, Roger Quadros wrote:
>> On 14/10/15 14:19, Sebastian Reichel wrote:
>>> On Wed, Oct 14, 2015 at 01:44:16PM +0300, Roger Quadros wrote:
>>>> Let's keep the SSI ports disabled in the omap3.dtsi to avoid
>>>> getting the following noise on the console for boards that don't
>>>> use the SSI ports.
>>>>
>>>> "omap_ssi_port 4805a000.ssi-port: DT data is missing cawake gpio (err=-2)"
>>>>
>>>> As omap3-n900 uses one SSI port, mark it enabled there.
>>
>> Would it be preferable to disable the ssi-controller node as well in the
>> omap3.dtsi file?
> 
> If I remember it correctly, existing, but unused IP-Cores
> should not be disabled in DT, so that hwmod picks them up
> for power management.

OK.
> 
> Note, that it actually is disabled in omap3.dtsi and then enabled in
> omap34xx/omap36xx dts files (the other variants do not have an ssi
> module).

Thanks for the info :)

cheers,
-roger


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