Add binding document for the Delta TN48M CPLD drivers. Signed-off-by: Robert Marko <robert.marko@xxxxxxxxxx> --- .../bindings/mfd/delta,tn48m-cpld.yaml | 59 +++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/delta,tn48m-cpld.yaml diff --git a/Documentation/devicetree/bindings/mfd/delta,tn48m-cpld.yaml b/Documentation/devicetree/bindings/mfd/delta,tn48m-cpld.yaml new file mode 100644 index 000000000000..7d81943d3d27 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/delta,tn48m-cpld.yaml @@ -0,0 +1,59 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/delta,tn48m-cpld.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Delta Networks TN48M CPLD controller + +maintainers: + - Robert Marko <robert.marko@xxxxxxxxxx> + +description: | + Lattice CPLD onboard the TN48M switches is used for system + management. + + It provides information about the hardware model, revision, + PSU status etc. + + It is also being used as a GPIO expander for the SFP slots. + +properties: + compatible: + const: delta,tn48m-cpld + + reg: + description: + I2C device address. + maxItems: 1 + + gpio-controller: true + + "#gpio-cells": + const: 2 + description: + The first cell is the pin number and the second cell is used to specify + the gpio active state. + +required: + - compatible + - reg + - gpio-controller + - "#gpio-cells" + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + cpld@41 { + compatible = "delta,tn48m-cpld"; + reg = <0x41>; + + gpio-controller; + #gpio-cells = <2>; + }; + }; -- 2.31.1
