On Fri, Oct 27, 2023 at 04:31:03PM +1300, Chris Packham wrote: > Add bus-reset-gpios and bus-reset-duration-us properties to the > marvell,mv64xxx-i2c binding. These can be used to describe hardware > where a common reset GPIO is connected to all downstream devices on and > I2C bus. This reset will be asserted then released before the downstream > devices on the bus are probed. > > Signed-off-by: Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx> > Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> Krzysztof, are you fine with this change? > --- > > Notes: > Changes in v5: > - Rename reset-gpios and reset-duration-us to bus-reset-gpios and > bus-reset-duration-us as requested by Wolfram > Changes in v4: > - Add r-by from Krzysztof > Changes in v3: > - Rename reset-delay-us to reset-duration-us to better reflect its > purpose > - Add default: for reset-duration-us > - Add description: for reset-gpios > Changes in v2: > - Update commit message > - Add reset-delay-us property > > .../devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml > index 461d1c9ee3f7..b165d1c4f0b1 100644 > --- a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml > +++ b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml > @@ -70,6 +70,16 @@ properties: > resets: > maxItems: 1 > > + bus-reset-gpios: > + description: > + GPIO pin providing a common reset for all downstream devices. This GPIO > + will be asserted then released before the downstream devices are probed. > + maxItems: 1 > + > + bus-reset-duration-us: > + description: Reset duration in us. > + default: 1 > + > dmas: > items: > - description: RX DMA Channel > -- > 2.42.0 >
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