linux-kernel - Re: [PATCH v4 6/6] ARM: dts: add RK3288 suspend support

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Message-ID: <CAD=FV=VAxmju6L6AEkU4VSuAEKDGmoN6rxE17JsTttWPHKKvBA@mail.gmail.com>
Date:	Wed, 22 Oct 2014 17:04:08 -0700
From:	Doug Anderson <dianders@...omium.org>
To:	Chris Zhong <zyw@...k-chips.com>
Cc:	Heiko Stuebner <heiko@...ech.de>,
	Mike Turquette <mturquette@...aro.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	linux-rockchip@...ts.infradead.org,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Tony Xie <xxx@...k-chips.com>
Subject: Re: [PATCH v4 6/6] ARM: dts: add RK3288 suspend support

Chris,

On Tue, Oct 21, 2014 at 4:26 PM, Chris Zhong <zyw@...k-chips.com> wrote:
> add pmu_intmem node for suspend, add global_pwroff pinctrl.
> The pmu_intmem is used to store the resume code.
> global_pwroff is held low level at work, it would be pull to high
> when entering suspend. PMICs can get this signal, then shut down
> some power rails. So please reference the global_pwroff pinctrl
> as part of the PMIC config.

nit: I would just say to reference this in the board DTS file since
some boards need it.  You could imagine this being useful to something
other than a PMIC.


> +       pmu_intmem@...20000 {
> +               compatible = "rockchip,rk3288-pmu-sram", "mmio-sram";
> +               reg = <0xff720000 0x4000>;

My TRM says this is 4K big.  You're specifying 16K here.  If it's
really 4K, it should be <0xff720000 0x1000>
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