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Message-ID: <70a7fea1-3818-b386-d951-013f94110f73@rock-chips.com> Date: Fri, 12 Apr 2019 09:55:18 +0800 From: "elaine.zhang" <zhangqing@...k-chips.com> To: Douglas Anderson <dianders@...omium.org>, Heiko Stuebner <heiko@...ech.de> Cc: dbasehore@...omium.org, amstan@...omium.org, linux-rockchip@...ts.infradead.org, briannorris@...omium.org, mka@...omium.org, ryandcase@...omium.org, Chris Zhong <zyw@...k-chips.com>, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>, Mark Rutland <mark.rutland@....com>, linux-arm-kernel@...ts.infradead.org Subject: Re: [PATCH 5/5] ARM: dts: rockchip: vdd_gpu off in suspend for rk3288-veyron hi, 在 2019/4/12 上午7:21, Douglas Anderson 写道: > At some point long long ago the downstream GPU driver would crash if > we turned the GPU off during suspend. For some context you can see: > > https://chromium-review.googlesource.com/#/c/215780/5..6/arch/arm/boot/dts/rk3288-pinky-rev2.dts > > At some point in time not too long after that got fixed. > > It's unclear why the GPU is left enabled during suspend on the > mainline kernel. Everything seems fine if I turn this off, so let's > do it. > > Signed-off-by: Douglas Anderson <dianders@...omium.org> > --- > > arch/arm/boot/dts/rk3288-veyron.dtsi | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/arch/arm/boot/dts/rk3288-veyron.dtsi b/arch/arm/boot/dts/rk3288-veyron.dtsi > index 279d7f4ecce0..1252522392c7 100644 > --- a/arch/arm/boot/dts/rk3288-veyron.dtsi > +++ b/arch/arm/boot/dts/rk3288-veyron.dtsi > @@ -217,8 +217,7 @@ > regulator-max-microvolt = <1250000>; > regulator-ramp-delay = <6001>; > regulator-state-mem { > - regulator-on-in-suspend; > - regulator-suspend-microvolt = <1000000>; > + regulator-off-in-suspend; > }; > }; > Reviewed-by: Elaine Zhang<zhangqing@...k-chips.com>
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