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Date: Tue, 30 Aug 2016 16:15:32 -0500 From: Andy Gross <andy.gross@...aro.org> To: "Gupta, Puja" <pujag@...eaurora.org> Cc: Stanimir Varbanov <stanimir.varbanov@...aro.org>, Ohad Ben-Cohen <ohad@...ery.com>, Bjorn Andersson <bjorn.andersson@...aro.org>, Stephen Boyd <sboyd@...eaurora.org>, Rob Herring <robh+dt@...nel.org>, Mark Rutland <mark.rutland@....com>, Rob Clark <robdclark@...il.com>, Srinivas Kandagatla <srinivas.kandagatla@...aro.org>, linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org, linux-remoteproc@...r.kernel.org, devicetree@...r.kernel.org Subject: Re: [PATCH 2/4] firmware: qcom: scm: add iommu scm calls for pg table On Wed, Aug 24, 2016 at 11:35:29AM -0700, Gupta, Puja wrote: > On 8/19/2016 8:53 AM, Stanimir Varbanov wrote: > >Those two scm calls are used to get the size of secure iommu > >page table and to pass physical memory address for this page > >table. The calls are used by remoteproc venus driver to load > >the firmware. > Do we really need these additional scm calls for venus? why can't we just > reuse existing __qcom_scm_pas_mem_setup() call? Keep in mind this is with the smmu-v1 on 8916. It seems like the downstream kernel has to do extra stuff when dealing with the older smmu. The newer platforms handle this quasi-transparently. Regards, Andy
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