> > > > > On Mon, Sep 30, 2019 at 11:25:03AM +0800, Biwen Li wrote: > > > The patch adds an optional property i2c-mux-never-disable > > > > > > Signed-off-by: Biwen Li <biwen.li@xxxxxxx> > > > --- > > > Change in v2: > > > - update documentation > > > > > > Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt | 1 + > > > 1 file changed, 1 insertion(+) > > > > > > diff --git > > > a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt > > > b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt > > > index 30ac6a60f041..71b73d0fdb62 100644 > > > --- a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt > > > +++ b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt > > > @@ -34,6 +34,7 @@ Optional Properties: > > > - first cell is the pin number > > > - second cell is used to specify flags. > > > See also > > > Documentation/devicetree/bindings/interrupt-controller/interrupts.tx > > > t > > > + - i2c-mux-never-disable: always forces mux to be enabled. > > > > Either needs to have a vendor prefix or be documented as a common > > property. I choose to be documented as a common property. > > > > IIRC, we already have a property for mux default state which seems > > like that would cover this unless you need to leave it in different states. > Okay, you are right, thank you so much. I will try it in v3. Do you mean that the property is i2c-mux-idle-disconnect in Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.txt? If so, the property i2c-mux-idle-disconnect is not good for me. Because condition of the property i2c-mux-idle-disconnect is in idle state(sometimes). But I need always enable i2c multiplexer in whatever state(anytime), so I add a common property i2c-mux-never-disable. > > > > Rob
