Cirrus Logic Lochnagar Audio Development Board Lochnagar is an evaluation and development board for Cirrus Logic Smart CODEC and Amp devices. It allows the connection of most Cirrus Logic devices on mini-cards, as well as allowing connection of various application processor systems to provide a full evaluation platform. Audio system topology, clocking and power can all be controlled through the Lochnagar, allowing the device under test to be used in a variety of possible use cases. This binding document describes the binding for the pinctrl portion of the driver. Also see these documents for generic binding information: [1] GPIO : ../gpio/gpio.txt [2] Pinctrl: ../pinctrl/pinctrl-bindings.txt And these for relevant defines: [3] include/dt-bindings/pinctrl/lochnagar.h This binding must be part of the Lochnagar MFD binding: [4] ../mfd/cirrus,lochnagar.txt Required properties: - compatible : One of the following strings: "cirrus,lochnagar-pinctrl" - gpio-controller : Indicates this device is a GPIO controller. - #gpio-cells : Must be 2. The first cell is the pin number, see [3] for available pins and the second cell is used to specify optional parameters, see [1]. - gpio-ranges : Range of pins managed by the GPIO controller, see [1]. Both the GPIO and Pinctrl base should be set to zero and the count to the appropriate of the LOCHNAGARx_PIN_NUM_GPIOS define, see [3]. - pinctrl-names : A pinctrl state named "default" must be defined. - pinctrl-0 : A phandle to the default pinctrl state. Required sub-nodes: The pin configurations are defined as a child of the pinctrl states node, see [2]. Each sub-node can have the following properties: - groups : A list of groups to select (either this or "pins" must be specified), available groups: codec-aif1, codec-aif2, codec-aif3, dsp-aif1, dsp-aif2, psia1, psia2, gf-aif1, gf-aif2, gf-aif3, gf-aif4, spdif-aif, usb-aif1, usb-aif2, adat-aif, soundcard-aif - pins : A list of pin names to select (either this or "groups" must be specified), available pins: fpga-gpio1, fpga-gpio2, fpga-gpio3, fpga-gpio4, fpga-gpio5, fpga-gpio6, codec-gpio1, codec-gpio2, codec-gpio3, codec-gpio4, codec-gpio5, codec-gpio6, codec-gpio7, codec-gpio8, dsp-gpio1, dsp-gpio2, dsp-gpio3, dsp-gpio4, dsp-gpio5, dsp-gpio6, gf-gpio2, gf-gpio3, gf-gpio7, codec-aif1-bclk, codec-aif1-rxdat, codec-aif1-lrclk, codec-aif1-txdat, codec-aif2-bclk, codec-aif2-rxdat, codec-aif2-lrclk, codec-aif2-txdat, codec-aif3-bclk, codec-aif3-rxdat, codec-aif3-lrclk, codec-aif3-txdat, dsp-aif1-bclk, dsp-aif1-rxdat, dsp-aif1-lrclk, dsp-aif1-txdat, dsp-aif2-bclk, dsp-aif2-rxdat, dsp-aif2-lrclk, dsp-aif2-txdat, psia1-bclk, psia1-rxdat, psia1-lrclk, psia1-txdat, psia2-bclk, psia2-rxdat, psia2-lrclk, psia2-txdat, gf-aif3-bclk, gf-aif3-rxdat, gf-aif3-lrclk, gf-aif3-txdat, gf-aif4-bclk, gf-aif4-rxdat, gf-aif4-lrclk, gf-aif4-txdat, gf-aif1-bclk, gf-aif1-rxdat, gf-aif1-lrclk, gf-aif1-txdat, gf-aif2-bclk, gf-aif2-rxdat, gf-aif2-lrclk, gf-aif2-txdat, dsp-uart1-rx, dsp-uart1-tx, dsp-uart2-rx, dsp-uart2-tx, gf-uart2-rx, gf-uart2-tx, usb-uart-rx, codec-pdmclk1, codec-pdmdat1, codec-pdmclk2, codec-pdmdat2, codec-dmicclk1, codec-dmicdat1, codec-dmicclk2, codec-dmicdat2, codec-dmicclk3, codec-dmicdat3, codec-dmicclk4, codec-dmicdat4, dsp-dmicclk1, dsp-dmicdat1, dsp-dmicclk2, dsp-dmicdat2, i2c2-scl, i2c2-sda, i2c3-scl, i2c3-sda, i2c4-scl, i2c4-sda, dsp-standby, codec-mclk1, codec-mclk2, dsp-clkin, psia1-mclk, psia2-mclk, gf-gpio1, gf-gpio5, dsp-gpio20, led1, led2 - function : The mux function to select, available functions: aif, fpga-gpio1, fpga-gpio2, fpga-gpio3, fpga-gpio4, fpga-gpio5, fpga-gpio6, codec-gpio1, codec-gpio2, codec-gpio3, codec-gpio4, codec-gpio5, codec-gpio6, codec-gpio7, codec-gpio8, dsp-gpio1, dsp-gpio2, dsp-gpio3, dsp-gpio4, dsp-gpio5, dsp-gpio6, gf-gpio2, gf-gpio3, gf-gpio7, gf-gpio1, gf-gpio5, dsp-gpio20, codec-clkout, dsp-clkout, pmic-32k, spdif-clkout, clk-12m288, clk-11m2986, clk-24m576, clk-22m5792, xmos-mclk, gf-clkout1, gf-mclk1, gf-mclk3, gf-mclk2, gf-clkout2, codec-mclk1, codec-mclk2, dsp-clkin, psia1-mclk, psia2-mclk, spdif-mclk, codec-irq, codec-reset, dsp-reset, dsp-irq, dsp-standby, codec-pdmclk1, codec-pdmdat1, codec-pdmclk2, codec-pdmdat2, codec-dmicclk1, codec-dmicdat1, codec-dmicclk2, codec-dmicdat2, codec-dmicclk3, codec-dmicdat3, codec-dmicclk4, codec-dmicdat4, dsp-dmicclk1, dsp-dmicdat1, dsp-dmicclk2, dsp-dmicdat2, dsp-uart1-rx, dsp-uart1-tx, dsp-uart2-rx, dsp-uart2-tx, gf-uart2-rx, gf-uart2-tx, usb-uart-rx, usb-uart-tx, i2c2-scl, i2c2-sda, i2c3-scl, i2c3-sda, i2c4-scl, i2c4-sda, spdif-aif, psia1, psia1-bclk, psia1-lrclk, psia1-rxdat, psia1-txdat, psia2, psia2-bclk, psia2-lrclk, psia2-rxdat, psia2-txdat, codec-aif1, codec-aif1-bclk, codec-aif1-lrclk, codec-aif1-rxdat, codec-aif1-txdat, codec-aif2, codec-aif2-bclk, codec-aif2-lrclk, codec-aif2-rxdat, codec-aif2-txdat, codec-aif3, codec-aif3-bclk, codec-aif3-lrclk, codec-aif3-rxdat, codec-aif3-txdat, dsp-aif1, dsp-aif1-bclk, dsp-aif1-lrclk, dsp-aif1-rxdat, dsp-aif1-txdat, dsp-aif2, dsp-aif2-bclk, dsp-aif2-lrclk, dsp-aif2-rxdat, dsp-aif2-txdat, gf-aif3, gf-aif3-bclk, gf-aif3-lrclk, gf-aif3-rxdat, gf-aif3-txdat, gf-aif4, gf-aif4-bclk, gf-aif4-lrclk, gf-aif4-rxdat, gf-aif4-txdat, gf-aif1, gf-aif1-bclk, gf-aif1-lrclk, gf-aif1-rxdat, gf-aif1-txdat, gf-aif2, gf-aif2-bclk, gf-aif2-lrclk, gf-aif2-rxdat, gf-aif2-txdat, usb-aif1, usb-aif2, adat-aif, soundcard-aif, - output-enable : Specifies that an AIF group will be used as a master interface (either this or input-enable is required if a group is being muxed to an AIF) - input-enable : Specifies that an AIF group will be used as a slave interface (either this or output-enable is required if a group is being muxed to an AIF) Example: lochnagar-pinctrl { compatible = "cirrus,lochnagar-pinctrl"; gpio-controller; #gpio-cells = <2>; gpio-ranges = <&lochnagar 0 0 LOCHNAGAR2_PIN_NUM_GPIOS>; pinctrl-names = "default"; pinctrl-0 = <&pin-settings>; pin-settings: pin-settings { ap-aif { input-enable; groups = "gf-aif1"; function = "codec-aif3"; }; codec-aif { output-enable; groups = "codec-aif3"; function = "gf-aif1"; }; }; };