xref: /linux/Documentation/devicetree/bindings/pinctrl/qcom,sc8280xp-lpass-lpi-pinctrl.yaml (revision 3d0fe49454652117522f60bfbefb978ba0e5300b) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pinctrl/qcom,sc8280xp-lpass-lpi-pinctrl.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Qualcomm SC8280XP SoC LPASS LPI TLMM
8
9maintainers:
10  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
11
12description:
13  Top Level Mode Multiplexer pin controller in the Low Power Audio SubSystem
14  (LPASS) Low Power Island (LPI) of Qualcomm SC8280XP SoC.
15
16properties:
17  compatible:
18    const: qcom,sc8280xp-lpass-lpi-pinctrl
19
20  reg:
21    items:
22      - description: LPASS LPI TLMM Control and Status registers
23      - description: LPASS LPI MCC registers
24
25  clocks:
26    items:
27      - description: LPASS Core voting clock
28      - description: LPASS Audio voting clock
29
30  clock-names:
31    items:
32      - const: core
33      - const: audio
34
35  gpio-controller: true
36
37  "#gpio-cells":
38    description: Specifying the pin number and flags, as defined in
39      include/dt-bindings/gpio/gpio.h
40    const: 2
41
42  gpio-ranges:
43    maxItems: 1
44
45patternProperties:
46  "-state$":
47    oneOf:
48      - $ref: "#/$defs/qcom-sc8280xp-lpass-state"
49      - patternProperties:
50          "-pins$":
51            $ref: "#/$defs/qcom-sc8280xp-lpass-state"
52        additionalProperties: false
53
54$defs:
55  qcom-sc8280xp-lpass-state:
56    type: object
57    description:
58      Pinctrl node's client devices use subnodes for desired pin configuration.
59      Client device subnodes use below standard properties.
60    $ref: /schemas/pinctrl/pincfg-node.yaml
61
62    properties:
63      pins:
64        description:
65          List of gpio pins affected by the properties specified in this
66          subnode.
67        items:
68          pattern: "^gpio([0-9]|1[0-8])$"
69
70      function:
71        enum: [ swr_tx_clk, swr_tx_data, swr_rx_clk, swr_rx_data,
72                dmic1_clk, dmic1_data, dmic2_clk, dmic2_data, dmic4_clk,
73                dmic4_data, i2s2_clk, i2s2_ws, dmic3_clk, dmic3_data,
74                qua_mi2s_sclk, qua_mi2s_ws, qua_mi2s_data, i2s1_clk, i2s1_ws,
75                i2s1_data, wsa_swr_clk, wsa_swr_data, wsa2_swr_clk,
76                wsa2_swr_data, i2s2_data, i2s3_clk, i2s3_ws, i2s3_data,
77                ext_mclk1_c, ext_mclk1_b, ext_mclk1_a ]
78        description:
79          Specify the alternative function to be configured for the specified
80          pins.
81
82      drive-strength:
83        enum: [2, 4, 6, 8, 10, 12, 14, 16]
84        default: 2
85        description:
86          Selects the drive strength for the specified pins, in mA.
87
88      slew-rate:
89        enum: [0, 1, 2, 3]
90        default: 0
91        description: |
92          0: No adjustments
93          1: Higher Slew rate (faster edges)
94          2: Lower Slew rate (slower edges)
95          3: Reserved (No adjustments)
96
97      bias-bus-hold: true
98      bias-pull-down: true
99      bias-pull-up: true
100      bias-disable: true
101      input-enable: true
102      output-high: true
103      output-low: true
104
105    required:
106      - pins
107      - function
108
109    additionalProperties: false
110
111allOf:
112  - $ref: pinctrl.yaml#
113
114required:
115  - compatible
116  - reg
117  - clocks
118  - clock-names
119  - gpio-controller
120  - "#gpio-cells"
121  - gpio-ranges
122
123additionalProperties: false
124
125examples:
126  - |
127    #include <dt-bindings/sound/qcom,q6afe.h>
128    pinctrl@33c0000 {
129        compatible = "qcom,sc8280xp-lpass-lpi-pinctrl";
130        reg = <0x33c0000 0x20000>,
131              <0x3550000 0x10000>;
132        clocks = <&q6afecc LPASS_HW_MACRO_VOTE LPASS_CLK_ATTRIBUTE_COUPLE_NO>,
133                 <&q6afecc LPASS_HW_DCODEC_VOTE LPASS_CLK_ATTRIBUTE_COUPLE_NO>;
134        clock-names = "core", "audio";
135        gpio-controller;
136        #gpio-cells = <2>;
137        gpio-ranges = <&lpi_tlmm 0 0 19>;
138
139        dmic01-state {
140            dmic01-clk-pins {
141                pins = "gpio16";
142                function = "dmic1_clk";
143            };
144
145            dmic01-clk-sleep-pins {
146                pins = "gpio16";
147                function = "dmic1_clk";
148            };
149        };
150
151        tx-swr-data-sleep-state {
152            pins = "gpio0", "gpio1";
153            function = "swr_tx_data";
154        };
155    };
156