On Thu, Oct 26, 2017 at 5:28 PM, Bernd Edlinger <bernd.edlinger@xxxxxxxxxx> wrote: > Signed-off-by: Bernd Edlinger <bernd.edlinger@xxxxxxxxxx> > --- > .../bindings/gpio/gpio-altera-fpgamgr.txt | 43 ++++++++++++++++++++++ > 1 file changed, 43 insertions(+) > create mode 100644 Documentation/devicetree/bindings/gpio/gpio-altera-fpgamgr.txt > > diff --git a/Documentation/devicetree/bindings/gpio/gpio-altera-fpgamgr.txt b/Documentation/devicetree/bindings/gpio/gpio-altera-fpgamgr.txt > new file mode 100644 > index 0000000..6e2ad47 > --- /dev/null > +++ b/Documentation/devicetree/bindings/gpio/gpio-altera-fpgamgr.txt > @@ -0,0 +1,43 @@ > +Altera FPGA Manager GPIO controller bindings > + > +Required controller properties: > +- #address-cells : Should be 1 > +- #size-cells : Should be 0 > +- compatible: > + - "altr,fpgamgr-gpio" > +- reg: Physical base address and length of the controller's registers. > + > +The FPGA Manager has two 32-bit ports, one for input and one for output. > + > +Port properties: > +- compatible: > + - "altr,fpgamgr-gpio-output" > + - "altr,fpgamgr-gpio-input" > +- #gpio-cells : Should be 2 > + - The first cell is the gpio offset number. > + - The second cell is reserved and is currently unused. > +- gpio-controller : Marks the device node as a GPIO controller. > +- reg : Port number, 0 for output, 1 for input. Don't do this. Create one device using a compatible for each port. Do not create a top-level device containing the two ports. If you anyway want a top level device, use "simple-bus" or something, not "altr,fpgamgr-gpio". Only two compatibles/devices: > + - "altr,fpgamgr-gpio-output" > + - "altr,fpgamgr-gpio-input" Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
