The Cirrus Logic Madera codecs have a range of GPIO pins that can be used as single-bit logic input or output. These are presented as a standard GPIO binding.
The second cell in a GPIO binding is currently reserved for future use as chip-specific flags. Signed-off-by: Richard Fitzgerald <[email protected]> --- Changes from V1: - moved out of main gpio patch into a separate patch - added gpio-line-names as an optional property .../devicetree/bindings/gpio/gpio-madera.txt | 27 ++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-madera.txt diff --git a/Documentation/devicetree/bindings/gpio/gpio-madera.txt b/Documentation/devicetree/bindings/gpio/gpio-madera.txt new file mode 100644 index 0000000..6254f5b --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-madera.txt @@ -0,0 +1,27 @@ +Cirrus Logic Madera class audio codecs gpio driver + +This is a subnode of the parent mfd node. + +See also the core bindings for the parent MFD driver: +See Documentation/devicetree/bindings/mfd/madera.txt + +Required properties: + - compatible : must be "cirrus,madera-gpio" + - gpio-controller : Indicates this device is a GPIO controller. + - #gpio-cells : Must be 2. The first cell is the pin number. The second cell + is reserved for future use and must be zero + +Optional properties: + - gpio-line-names : as described in bindings/gpio/gpio.txt + +Example: + +cs47l85@0 { + compatible = "cirrus,cs47l85"; + + gpio { + compatible = "cirrus,madera-gpio"; + gpio-controller; + #gpio-cells = <2>; + } +}; -- 1.9.1
