linux-kernel - Re: [PATCH 2/2] ARM: dts: rockchip: correct regulator PM properties

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Message-ID: <10828643.SSUS2EOuvv@phil>
Date:	Wed, 19 Aug 2015 08:19:47 +0200
From:	Heiko Stuebner <heiko@...ech.de>
To:	Brian Norris <briannorris@...omium.org>
Cc:	linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Brian Norris <computersforpeace@...il.com>,
	devicetree@...r.kernel.org, Alexandru M Stan <amstan@...omium.org>,
	Douglas Anderson <dianders@...omium.org>
Subject: Re: [PATCH 2/2] ARM: dts: rockchip: correct regulator PM properties

Am Dienstag, 18. August 2015, 16:28:06 schrieb Brian Norris:
> Now that I'm looking a little closer, it seems like other existing DTS's
> are broken too, then. Jerry looks like it was converted to the
> regulator-state-mem node binding, but the conversion doesn't seem to
> make sense when I compare the chromium DTS sources with the for-next
> source I see in your tree.
> 
> In -next:
> 
>      regulators {
>              mic_vcc: LDO_REG2 {
>                         regulator-name = "mic_vcc";
>                         regulator-always-on;
>                         regulator-boot-on;
>                         regulator-min-microvolt = <1800000>;
>                         regulator-max-microvolt = <1800000>;
>                         regulator-state-mem {
>                                 regulator-on-in-suspend;
>                         };
>                 };
>          };
> 
> But chromium had:
> 
>        regulators {
>                 mic_vcc: LDO_REG2 {
>                         regulator-always-on;
>                         regulator-boot-on;
>                         regulator-min-microvolt = <1800000>;
>                         regulator-max-microvolt = <1800000>;
>                         regulator-name = "mic_vcc";
>                         regulator-suspend-mem-disabled;
>                 };
>        };
> 
> So I guess I'll make the proper conversion for all the veyron variants I
> see.

great, just take into account the deep vs. shallow suspend modes :-)

The original regulator-state changes did happen when we had this suspend 
instability (counter and gpioint stuff) and I did go with the values similar to 
the rk3288-evb, as this was the only one resuming at all at the time. So I 
guess I never looked to closesly what it did, as long as the system came out 
of suspend sucessfully again :-)


Heiko
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