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Date: Sun, 17 Feb 2019 15:08:14 -0600 From: Rob Herring <robh+dt@...nel.org> To: Jordan Crouse <jcrouse@...eaurora.org> Cc: freedreno <freedreno@...ts.freedesktop.org>, linux-arm-msm <linux-arm-msm@...r.kernel.org>, devicetree@...r.kernel.org, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, dri-devel <dri-devel@...ts.freedesktop.org>, Rob Clark <robdclark@...il.com>, David Airlie <airlied@...ux.ie>, Mark Rutland <mark.rutland@....com>, Daniel Vetter <daniel@...ll.ch> Subject: Re: [PATCH v1 2/6] dt-bindings: drm/msm/a6xx: Add GX power-domain for GMU bindings On Mon, Feb 4, 2019 at 10:15 AM Jordan Crouse <jcrouse@...eaurora.org> wrote: > > The GMU should have two power domains defined: "cx" and "gx". "cx" is the > actual power domain for the device and "gx" will be attached at runtime > to manage reference counting on the GPU device in case of a GMU crash. power-domains are supposed to be actual regions on a chip die which can be power gated. However, they are often abused by being defined in terms of kernel PM domains which are not always the same thing. This description sounds like the latter case. Rob
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