On Sun, Apr 24, 2022 at 10:28:05PM -0700, Drew Fustini wrote: > From: Dave Gerlach <d-gerlach@xxxxxx> > > Add documentation for ti,scale-data-fw property to enable I2C PMIC > voltage scaling during deep sleep. The property contains the name of a > binary file for the CM3 firmware to load. > > Based on previous work by Russ Dill. > > Signed-off-by: Dave Gerlach <d-gerlach@xxxxxx> > Signed-off-by: Keerthy <j-keerthy@xxxxxx> > [dfustini: split from driver patch and convert to json-schema] > Signed-off-by: Drew Fustini <dfustini@xxxxxxxxxxxx> > --- > .../devicetree/bindings/soc/ti/wkup-m3-ipc.yaml | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/Documentation/devicetree/bindings/soc/ti/wkup-m3-ipc.yaml b/Documentation/devicetree/bindings/soc/ti/wkup-m3-ipc.yaml > index 88d690de050c..d2c248d82384 100644 > --- a/Documentation/devicetree/bindings/soc/ti/wkup-m3-ipc.yaml > +++ b/Documentation/devicetree/bindings/soc/ti/wkup-m3-ipc.yaml > @@ -40,6 +40,12 @@ description: |+ > override the pin's existing bias (pull-up/pull-down) and value (high/low) when > IO isolation is active. > > + Support for I2C PMIC Voltage Scaling > + ==================================== > + It is possible to pass the name of a binary file to load into the CM3 memory. > + The binary data is the I2C sequences for the CM3 to send out to the PMIC > + during low power mode entry. > + > properties: > compatible: > enum: > @@ -67,6 +73,11 @@ properties: > mbox_wkupm3 child node. > maxItems: 1 > > + ti,scale-data-fw: > + $ref: /schemas/types.yaml#/definitions/string > + description: > + Name of the firmware binary in /lib/firmware to copy to CM3 aux data The location of firmware files is up to the OS. Is there other firmware? If not, 'firmware-name' is the somewhat standard property for this. What's the default name? > + > ti,vtt-gpio-pin: > $ref: /schemas/types.yaml#/definitions/uint32 > description: GPIO pin connected to enable pin on VTT regulator > -- > 2.32.0 > >
