From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bjorn Andersson Subject: Re: [PATCH 6/6] drm/msm: Document the zap-shader subnode for the GPU Date: Mon, 17 Apr 2017 12:57:06 -0700 Message-ID: <20170417195638.GT70446@Bjorns-MacBook-Pro-2.local> References: <1492031718-28477-1-git-send-email-jcrouse@codeaurora.org> <1492031718-28477-7-git-send-email-jcrouse@codeaurora.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-pf0-f171.google.com ([209.85.192.171]:35118 "EHLO mail-pf0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753810AbdDQT5L (ORCPT ); Mon, 17 Apr 2017 15:57:11 -0400 Received: by mail-pf0-f171.google.com with SMTP id i5so70086283pfc.2 for ; Mon, 17 Apr 2017 12:57:11 -0700 (PDT) Content-Disposition: inline In-Reply-To: <1492031718-28477-7-git-send-email-jcrouse@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org List-Id: linux-arm-msm@vger.kernel.org To: Jordan Crouse Cc: freedreno@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org On Wed 12 Apr 14:15 PDT 2017, Jordan Crouse wrote: > The 'zap-shader' subnode is used to define a phandle for the > PIL memory region that is required to load GPU secure firwmare images > (known as the "zap shader"). > > Signed-off-by: Jordan Crouse Acked-by: Bjorn Andersson Regards, Bjorn > --- > Documentation/devicetree/bindings/display/msm/gpu.txt | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/Documentation/devicetree/bindings/display/msm/gpu.txt b/Documentation/devicetree/bindings/display/msm/gpu.txt > index 43fac0f..0376b20 100644 > --- a/Documentation/devicetree/bindings/display/msm/gpu.txt > +++ b/Documentation/devicetree/bindings/display/msm/gpu.txt > @@ -15,6 +15,15 @@ Required properties: > * "iface" > * "mem_iface" > > +Subnodes: > +- zap-shader: Defines the memory region used by the zap shader > + to load the firmware via the PIL loader. This is required > + for adreno-5xx targets and newer unless the secure mode > + is specifically disabled on a target. > + > +Required properties for zap-shader: > +- memory-region: Phandle to the PIL reserved memory region. > + > Example: > > / { > @@ -34,5 +43,9 @@ Example: > <&mmcc GFX3D_CLK>, > <&mmcc GFX3D_AHB_CLK>, > <&mmcc MMSS_IMEM_AHB_CLK>; > + > + zap-shader { > + memory-region = <&peripheral_reserved>; > + }; > }; > }; > -- > 1.9.1 >