dt-bindings: mtd: Add a property to declare secure regions in NAND chips

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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.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210402150128.29128-3-manivannan.sadhasivam@linaro.org

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Manivannan Sadhasivam 2021-04-02 20:31:26 +05:30 • committed by Miquel Raynal

parent da386f7f23

commit ee590106c3

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Documentation/devicetree/bindings/mtd/nand-controller.yaml

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