linux-kernel - [PATCH 0/3] nvmem: qfprom: Avoid untouchable regions

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Message-Id: <20200929205807.2360405-1-evgreen@chromium.org>
Date:   Tue, 29 Sep 2020 13:58:04 -0700
From:   Evan Green <evgreen@...omium.org>
To:     Rob Herring <robh+dt@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc:     Douglas Anderson <dianders@...omium.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Evan Green <evgreen@...omium.org>,
        Andy Gross <agross@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/3] nvmem: qfprom: Avoid untouchable regions

Certain fuses are protected by the XPU such that the AP cannot
access them. Attempting to do so causes an SError. Introduce an
SoC-specific compatible string, and then use that to determine
which fuse regions to present as Read as Zero / Write Ignore.


Evan Green (3):
  dt-bindings: nvmem: Add qcom,sc7180-qfprom compatible string
  arm64: dts: qcom: sc7180: Add soc-specific qfprom compat string
  nvmem: qfprom: Don't touch certain fuses

 .../bindings/nvmem/qcom,qfprom.yaml           |  4 +-
 arch/arm64/boot/dts/qcom/sc7180.dtsi          |  2 +-
 drivers/nvmem/qfprom.c                        | 55 +++++++++++++++++--
 3 files changed, 55 insertions(+), 6 deletions(-)

-- 
2.26.2