Messages in this thread | | | Date | Wed, 8 Jan 2020 14:54:01 -0600 | From | Rob Herring <> | Subject | Re: [PATCH v4 1/5] dt-bindings: nvmem: new optional property wp-gpios |
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On Tue, 7 Jan 2020 10:29:18 +0100, Khouloud Touil wrote: > Several memories have a write-protect pin, that when pulled high, it > blocks the write operation. > > On some boards, this pin is connected to a GPIO and pulled high by > default, which forces the user to manually change its state before > writing. > > Instead of modifying all the memory drivers to check this pin, make > the NVMEM subsystem check if the write-protect GPIO being passed > through the nvmem_config or defined in the device tree and pull it > low whenever writing to the memory. > > Add a new optional property to the device tree binding document, which > allows to specify the GPIO line to which the write-protect pin is > connected. > > Signed-off-by: Khouloud Touil <ktouil@baylibre.com> > --- > Documentation/devicetree/bindings/nvmem/nvmem.yaml | 11 +++++++++++ > 1 file changed, 11 insertions(+) >
Reviewed-by: Rob Herring <robh@kernel.org>
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