xref: /linux/Documentation/devicetree/bindings/pinctrl/qcom,sm8250-lpass-lpi-pinctrl.yaml (revision 9c3a985f88fa4de82bf4bda906095ce6444e9039) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pinctrl/qcom,sm8250-lpass-lpi-pinctrl.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Qualcomm SM8250 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 SM8250 SoC.
15
16properties:
17  compatible:
18    const: qcom,sm8250-lpass-lpi-pinctrl
19
20  reg:
21    maxItems: 2
22
23  clocks:
24    items:
25      - description: LPASS Core voting clock
26      - description: LPASS Audio voting clock
27
28  clock-names:
29    items:
30      - const: core
31      - const: audio
32
33  gpio-controller: true
34
35  "#gpio-cells":
36    description: Specifying the pin number and flags, as defined in
37      include/dt-bindings/gpio/gpio.h
38    const: 2
39
40  gpio-ranges:
41    maxItems: 1
42
43patternProperties:
44  "-state$":
45    oneOf:
46      - $ref: "#/$defs/qcom-sm8250-lpass-state"
47      - patternProperties:
48          "-pins$":
49            $ref: "#/$defs/qcom-sm8250-lpass-state"
50        additionalProperties: false
51
52$defs:
53  qcom-sm8250-lpass-state:
54    type: object
55    description:
56      Pinctrl node's client devices use subnodes for desired pin configuration.
57      Client device subnodes use below standard properties.
58    $ref: /schemas/pinctrl/pincfg-node.yaml
59
60    properties:
61      pins:
62        description:
63          List of gpio pins affected by the properties specified in this
64          subnode.
65        items:
66          oneOf:
67            - pattern: "^gpio([0-9]|1[0-3])$"
68        minItems: 1
69        maxItems: 14
70
71      function:
72        enum: [ gpio, swr_tx_clk, qua_mi2s_sclk, swr_tx_data, qua_mi2s_ws,
73                qua_mi2s_data, swr_rx_clk, swr_rx_data, dmic1_clk, i2s1_clk,
74                dmic1_data, i2s1_ws, dmic2_clk, dmic2_data, i2s1_data,
75                i2s2_clk, wsa_swr_clk, i2s2_ws, wsa_swr_data, dmic3_clk,
76                dmic3_data, i2s2_data ]
77        description:
78          Specify the alternative function to be configured for the specified
79          pins.
80
81      drive-strength:
82        enum: [2, 4, 6, 8, 10, 12, 14, 16]
83        default: 2
84        description:
85          Selects the drive strength for the specified pins, in mA.
86
87      slew-rate:
88        enum: [0, 1, 2, 3]
89        default: 0
90        description: |
91            0: No adjustments
92            1: Higher Slew rate (faster edges)
93            2: Lower Slew rate (slower edges)
94            3: Reserved (No adjustments)
95
96      bias-pull-down: true
97      bias-pull-up: true
98      bias-bus-hold: true
99      bias-disable: true
100      input-enable: true
101      output-high: true
102      output-low: true
103
104    required:
105      - pins
106      - function
107
108    additionalProperties: false
109
110allOf:
111  - $ref: pinctrl.yaml#
112
113required:
114  - compatible
115  - reg
116  - clocks
117  - clock-names
118  - gpio-controller
119  - "#gpio-cells"
120  - gpio-ranges
121
122additionalProperties: false
123
124examples:
125  - |
126    #include <dt-bindings/sound/qcom,q6afe.h>
127    lpi_tlmm: pinctrl@33c0000 {
128        compatible = "qcom,sm8250-lpass-lpi-pinctrl";
129        reg = <0x33c0000 0x20000>,
130              <0x3550000 0x10000>;
131        clocks = <&q6afecc LPASS_HW_MACRO_VOTE LPASS_CLK_ATTRIBUTE_COUPLE_NO>,
132                 <&q6afecc LPASS_HW_DCODEC_VOTE LPASS_CLK_ATTRIBUTE_COUPLE_NO>;
133        clock-names = "core", "audio";
134        gpio-controller;
135        #gpio-cells = <2>;
136        gpio-ranges = <&lpi_tlmm 0 0 14>;
137
138        wsa-swr-active-state {
139            clk-pins {
140                pins = "gpio10";
141                function = "wsa_swr_clk";
142                drive-strength = <2>;
143                slew-rate = <1>;
144                bias-disable;
145            };
146
147            data-pins {
148                pins = "gpio11";
149                function = "wsa_swr_data";
150                drive-strength = <2>;
151                slew-rate = <1>;
152            };
153        };
154
155        tx-swr-sleep-clk-state {
156            pins = "gpio0";
157            function = "swr_tx_clk";
158            drive-strength = <2>;
159            bias-pull-down;
160        };
161    };
162