1 Cirrus Logic Lochnagar Audio Development Board
3 Lochnagar is an evaluation and development board for Cirrus Logic
4 Smart CODEC and Amp devices. It allows the connection of most Cirrus
5 Logic devices on mini-cards, as well as allowing connection of
6 various application processor systems to provide a full evaluation
7 platform. Audio system topology, clocking and power can all be
8 controlled through the Lochnagar, allowing the device under test
9 to be used in a variety of possible use cases.
11 This binding document describes the binding for the pinctrl portion
14 Also see these documents for generic binding information:
15 [1] GPIO : ../gpio/gpio.txt
16 [2] Pinctrl: ../pinctrl/pinctrl-bindings.txt
18 And these for relevant defines:
19 [3] include/dt-bindings/pinctrl/lochnagar.h
21 This binding must be part of the Lochnagar MFD binding:
22 [4] ../mfd/cirrus,lochnagar.txt
26 - compatible : One of the following strings:
27 "cirrus,lochnagar-pinctrl"
29 - gpio-controller : Indicates this device is a GPIO controller.
30 - #gpio-cells : Must be 2. The first cell is the pin number, see
31 [3] for available pins and the second cell is used to specify
32 optional parameters, see [1].
33 - gpio-ranges : Range of pins managed by the GPIO controller, see
34 [1]. Both the GPIO and Pinctrl base should be set to zero and the
35 count to the appropriate of the LOCHNAGARx_PIN_NUM_GPIOS define,
38 - pinctrl-names : A pinctrl state named "default" must be defined.
39 - pinctrl-0 : A phandle to the default pinctrl state.
43 The pin configurations are defined as a child of the pinctrl states
44 node, see [2]. Each sub-node can have the following properties:
45 - groups : A list of groups to select (either this or "pins" must be
46 specified), available groups:
47 codec-aif1, codec-aif2, codec-aif3, dsp-aif1, dsp-aif2, psia1,
48 psia2, gf-aif1, gf-aif2, gf-aif3, gf-aif4, spdif-aif, usb-aif1,
49 usb-aif2, adat-aif, soundcard-aif
50 - pins : A list of pin names to select (either this or "groups" must
51 be specified), available pins:
52 fpga-gpio1, fpga-gpio2, fpga-gpio3, fpga-gpio4, fpga-gpio5,
53 fpga-gpio6, codec-gpio1, codec-gpio2, codec-gpio3, codec-gpio4,
54 codec-gpio5, codec-gpio6, codec-gpio7, codec-gpio8, dsp-gpio1,
55 dsp-gpio2, dsp-gpio3, dsp-gpio4, dsp-gpio5, dsp-gpio6, gf-gpio2,
56 gf-gpio3, gf-gpio7, codec-aif1-bclk, codec-aif1-rxdat,
57 codec-aif1-lrclk, codec-aif1-txdat, codec-aif2-bclk,
58 codec-aif2-rxdat, codec-aif2-lrclk, codec-aif2-txdat,
59 codec-aif3-bclk, codec-aif3-rxdat, codec-aif3-lrclk,
60 codec-aif3-txdat, dsp-aif1-bclk, dsp-aif1-rxdat, dsp-aif1-lrclk,
61 dsp-aif1-txdat, dsp-aif2-bclk, dsp-aif2-rxdat,
62 dsp-aif2-lrclk, dsp-aif2-txdat, psia1-bclk, psia1-rxdat,
63 psia1-lrclk, psia1-txdat, psia2-bclk, psia2-rxdat, psia2-lrclk,
64 psia2-txdat, gf-aif3-bclk, gf-aif3-rxdat, gf-aif3-lrclk,
65 gf-aif3-txdat, gf-aif4-bclk, gf-aif4-rxdat, gf-aif4-lrclk,
66 gf-aif4-txdat, gf-aif1-bclk, gf-aif1-rxdat, gf-aif1-lrclk,
67 gf-aif1-txdat, gf-aif2-bclk, gf-aif2-rxdat, gf-aif2-lrclk,
68 gf-aif2-txdat, dsp-uart1-rx, dsp-uart1-tx, dsp-uart2-rx,
69 dsp-uart2-tx, gf-uart2-rx, gf-uart2-tx, usb-uart-rx,
70 codec-pdmclk1, codec-pdmdat1, codec-pdmclk2, codec-pdmdat2,
71 codec-dmicclk1, codec-dmicdat1, codec-dmicclk2, codec-dmicdat2,
72 codec-dmicclk3, codec-dmicdat3, codec-dmicclk4, codec-dmicdat4,
73 dsp-dmicclk1, dsp-dmicdat1, dsp-dmicclk2, dsp-dmicdat2, i2c2-scl,
74 i2c2-sda, i2c3-scl, i2c3-sda, i2c4-scl, i2c4-sda, dsp-standby,
75 codec-mclk1, codec-mclk2, dsp-clkin, psia1-mclk, psia2-mclk,
76 gf-gpio1, gf-gpio5, dsp-gpio20, led1, led2
77 - function : The mux function to select, available functions:
78 aif, fpga-gpio1, fpga-gpio2, fpga-gpio3, fpga-gpio4, fpga-gpio5,
79 fpga-gpio6, codec-gpio1, codec-gpio2, codec-gpio3, codec-gpio4,
80 codec-gpio5, codec-gpio6, codec-gpio7, codec-gpio8, dsp-gpio1,
81 dsp-gpio2, dsp-gpio3, dsp-gpio4, dsp-gpio5, dsp-gpio6, gf-gpio2,
82 gf-gpio3, gf-gpio7, gf-gpio1, gf-gpio5, dsp-gpio20, codec-clkout,
83 dsp-clkout, pmic-32k, spdif-clkout, clk-12m288, clk-11m2986,
84 clk-24m576, clk-22m5792, xmos-mclk, gf-clkout1, gf-mclk1,
85 gf-mclk3, gf-mclk2, gf-clkout2, codec-mclk1, codec-mclk2,
86 dsp-clkin, psia1-mclk, psia2-mclk, spdif-mclk, codec-irq,
87 codec-reset, dsp-reset, dsp-irq, dsp-standby, codec-pdmclk1,
88 codec-pdmdat1, codec-pdmclk2, codec-pdmdat2, codec-dmicclk1,
89 codec-dmicdat1, codec-dmicclk2, codec-dmicdat2, codec-dmicclk3,
90 codec-dmicdat3, codec-dmicclk4, codec-dmicdat4, dsp-dmicclk1,
91 dsp-dmicdat1, dsp-dmicclk2, dsp-dmicdat2, dsp-uart1-rx,
92 dsp-uart1-tx, dsp-uart2-rx, dsp-uart2-tx, gf-uart2-rx,
93 gf-uart2-tx, usb-uart-rx, usb-uart-tx, i2c2-scl, i2c2-sda,
94 i2c3-scl, i2c3-sda, i2c4-scl, i2c4-sda, spdif-aif, psia1,
95 psia1-bclk, psia1-lrclk, psia1-rxdat, psia1-txdat, psia2,
96 psia2-bclk, psia2-lrclk, psia2-rxdat, psia2-txdat, codec-aif1,
97 codec-aif1-bclk, codec-aif1-lrclk, codec-aif1-rxdat,
98 codec-aif1-txdat, codec-aif2, codec-aif2-bclk, codec-aif2-lrclk,
99 codec-aif2-rxdat, codec-aif2-txdat, codec-aif3, codec-aif3-bclk,
100 codec-aif3-lrclk, codec-aif3-rxdat, codec-aif3-txdat, dsp-aif1,
101 dsp-aif1-bclk, dsp-aif1-lrclk, dsp-aif1-rxdat, dsp-aif1-txdat,
102 dsp-aif2, dsp-aif2-bclk, dsp-aif2-lrclk, dsp-aif2-rxdat,
103 dsp-aif2-txdat, gf-aif3, gf-aif3-bclk, gf-aif3-lrclk,
104 gf-aif3-rxdat, gf-aif3-txdat, gf-aif4, gf-aif4-bclk,
105 gf-aif4-lrclk, gf-aif4-rxdat, gf-aif4-txdat, gf-aif1,
106 gf-aif1-bclk, gf-aif1-lrclk, gf-aif1-rxdat, gf-aif1-txdat,
107 gf-aif2, gf-aif2-bclk, gf-aif2-lrclk, gf-aif2-rxdat,
108 gf-aif2-txdat, usb-aif1, usb-aif2, adat-aif, soundcard-aif,
110 - output-enable : Specifies that an AIF group will be used as a master
111 interface (either this or input-enable is required if a group is
112 being muxed to an AIF)
113 - input-enable : Specifies that an AIF group will be used as a slave
114 interface (either this or output-enable is required if a group is
115 being muxed to an AIF)
120 compatible = "cirrus,lochnagar-pinctrl";
124 gpio-ranges = <&lochnagar 0 0 LOCHNAGAR2_PIN_NUM_GPIOS>;
126 pinctrl-names = "default";
127 pinctrl-0 = <&pin-settings>;
129 pin-settings: pin-settings {
133 function = "codec-aif3";
137 groups = "codec-aif3";
138 function = "gf-aif1";