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[104.57.184.186]) by smtp.gmail.com with ESMTPSA id b16sm3929519oti.4.2020.11.02.14.34.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Nov 2020 14:34:58 -0800 (PST) Date: Mon, 2 Nov 2020 16:34:57 -0600 From: Bjorn Andersson To: Srinivas Kandagatla Cc: Evan Green , Rob Herring , Douglas Anderson , Stephen Boyd , Andy Gross , devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 0/4] nvmem: qfprom: Avoid untouchable regions Message-ID: <20201102223457.GA65067@builder.lan> References: <20201029002827.1729915-1-evgreen@chromium.org> <0a7d86ee-96b0-eff8-e315-ff65086661ee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0a7d86ee-96b0-eff8-e315-ff65086661ee@linaro.org> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Mon 02 Nov 09:58 CST 2020, Srinivas Kandagatla wrote: > > > On 29/10/2020 00:28, Evan Green wrote: > > 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 introduce support into the > > nvmem core to avoid accessing specified regions. Then use those > > new elements in the qfprom driver to avoid SErrors when usermode > > accesses certain registers. > > > > Changes in v3: > > - Fixed example (Doug and rob-bot) > > - Use min()/max() macros instead of defining my own (Doug) > > - Comment changes to indicate sorting (Doug) > > - Add function to validate keepouts are proper (Doug) > > > > Changes in v2: > > - Add other soc compatible strings (Doug) > > - Fix compatible string definition (Doug) > > - Introduced keepout regions into the core (Srini) > > - Use new core support in qfprom (Srini) > > > > Evan Green (4): > > dt-bindings: nvmem: Add soc qfprom compatible strings > > arm64: dts: qcom: sc7180: Add soc-specific qfprom compat string > > nvmem: core: Add support for keepout regions > > nvmem: qfprom: Don't touch certain fuses > > Except dts patch, I have applied all the patches, dts patch should go via > arm-soc tree! > And I've picked the dts patch. Thank you, Bjorn > > --srini > > > > > .../bindings/nvmem/qcom,qfprom.yaml | 17 +- > > arch/arm64/boot/dts/qcom/sc7180.dtsi | 2 +- > > drivers/nvmem/core.c | 153 +++++++++++++++++- > > drivers/nvmem/qfprom.c | 30 ++++ > > include/linux/nvmem-provider.h | 17 ++ > > 5 files changed, 211 insertions(+), 8 deletions(-) > >