linux-kernel - Re: [PATCHv7 2/3] firmware/qcom_scm: Add scm call to handle smmu errata

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Message-ID: <20191104051526.GA5299@hector.lan>
Date:   Sun, 3 Nov 2019 23:15:26 -0600
From:   Andy Gross <agross@...nel.org>
To:     Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
Cc:     Robin Murphy <robin.murphy@....com>, Will Deacon <will@...nel.org>,
        Joerg Roedel <joro@...tes.org>,
        iommu@...ts.linux-foundation.org,
        Stephen Boyd <swboyd@...omium.org>,
        Vivek Gautam <vivek.gautam@...eaurora.org>,
        bjorn.andersson@...aro.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Rajendra Nayak <rnayak@...eaurora.org>
Subject: Re: [PATCHv7 2/3] firmware/qcom_scm: Add scm call to handle smmu
 errata

On Fri, Sep 20, 2019 at 01:34:28PM +0530, Sai Prakash Ranjan wrote:
> From: Vivek Gautam <vivek.gautam@...eaurora.org>
> 
> Qcom's smmu-500 needs to toggle wait-for-safe sequence to
> handle TLB invalidation sync's.
> Few firmwares allow doing that through SCM interface.
> Add API to toggle wait for safe from firmware through a
> SCM call.
> 
> Signed-off-by: Vivek Gautam <vivek.gautam@...eaurora.org>
> Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> Reviewed-by: Stephen Boyd <swboyd@...omium.org>
> Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
> ---

Acked-by: Andy Gross <agross@...nel.org>