On Sun, Aug 28, 2022 at 10:49 AM Eliav Farber <farbere@xxxxxxxxxx> wrote: > > Boards using the AT24 EEPROMs might have a GPIO that controls the power > supply of the chip, and it must be set to enable the usage of it. > > Add a new optional property to the device tree binding document, which > allows to specify a GPIO regulator for the pin that controls the power. > > On Linux this means that we need to enable the GPIO at the beginning of > probe function, before trying to access the chip. > > Signed-off-by: Eliav Farber <farbere@xxxxxxxxxx> > --- > V2 -> V3: > Apply on top of v6.0-rc1 > > Documentation/devicetree/bindings/eeprom/at24.yaml | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/Documentation/devicetree/bindings/eeprom/at24.yaml b/Documentation/devicetree/bindings/eeprom/at24.yaml > index d14e0accbda8..82f0046f67a9 100644 > --- a/Documentation/devicetree/bindings/eeprom/at24.yaml > +++ b/Documentation/devicetree/bindings/eeprom/at24.yaml > @@ -179,6 +179,10 @@ properties: > description: > phandle of the regulator that provides the supply voltage. > > + power-supply: The datasheets I looked at say the supply name is 'VCC', so vcc-supply. > + description: > + phandle of the gpio regulator that provides the supply voltage. What the connection is is outside the scope of the binding. IOW, it might not be a GPIO controlled regulator. So drop the description. > + > required: > - compatible > - reg > -- > 2.37.1 >
