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Date:   Tue, 23 Mar 2021 16:29:55 -0600
From:   Rob Herring <robh@kernel.org>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc:     vigneshr@ti.com, linux-kernel@vger.kernel.org, richard@nod.at,
        miquel.raynal@bootlin.com, devicetree@vger.kernel.org,
        boris.brezillon@collabora.com, linux-arm-msm@vger.kernel.org,
        linux-mtd@lists.infradead.org, robh+dt@kernel.org,
        Daniele.Palmas@telit.com, bjorn.andersson@linaro.org
Subject: Re: [PATCH v8 2/3] dt-bindings: mtd: Add a property to declare
 secure regions in NAND chips
Message-ID: <20210323222955.GA1461867@robh.at.kernel.org>
References: <20210323073930.89754-1-manivannan.sadhasivam@linaro.org>
 <20210323073930.89754-3-manivannan.sadhasivam@linaro.org>
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On Tue, 23 Mar 2021 13:09:29 +0530, Manivannan Sadhasivam wrote:
> On a typical end product, a vendor may choose to secure some regions in
> the NAND memory which are supposed to stay intact between FW upgrades.
> The access to those regions will be blocked by a secure element like
> Trustzone. So the normal world software like Linux kernel should not
> touch these regions (including reading).
> 
> So let's add a property for declaring such secure regions so that the
> drivers can skip touching them.
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> ---
>  Documentation/devicetree/bindings/mtd/nand-controller.yaml | 7 +++++++
>  1 file changed, 7 insertions(+)
> 

Reviewed-by: Rob Herring <robh@kernel.org>