1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/leds/leds-lgm.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Intel Lightning Mountain (LGM) SoC LED Serial Shift Output (SSO) Controller driver
8
9 maintainers:
10 - Zhu, Yi Xin <Yixin.zhu@intel.com>
11 - Amireddy Mallikarjuna reddy <mallikarjunax.reddy@intel.com>
12
13 properties:
14 compatible:
15 const: intel,lgm-ssoled
16
17 reg:
18 maxItems: 1
19
20 clocks:
21 maxItems: 2
22
23 clock-names:
24 items:
25 - const: sso
26 - const: fpid
27
28 gpio-controller: true
29
30 '#gpio-cells':
31 const: 2
32
33 ngpios:
34 minimum: 0
35 maximum: 32
36 description:
37 Number of GPIOs this controller provides.
38
39 intel,sso-update-rate-hz:
40 description:
41 Blink frequency for SOUTs in Hz.
42
43 led-controller:
44 type: object
45 description:
46 This sub-node must contain a sub-node for each leds.
47
48 additionalProperties: false
49
50 properties:
51 '#address-cells':
52 const: 1
53
54 '#size-cells':
55 const: 0
56
57 patternProperties:
58 "^led@[0-2]$":
59 $ref: common.yaml#
60 unevaluatedProperties: false
61
62 properties:
63 reg:
64 description: Index of the LED.
65 minimum: 0
66 maximum: 2
67
68 led-gpios:
69 maxItems: 1
70
71 intel,sso-hw-trigger:
72 type: boolean
73 description: This property indicates Hardware driven/control LED.
74
75 intel,sso-hw-blink:
76 type: boolean
77 description: This property indicates Enable LED blink by Hardware.
78
79 intel,sso-blink-rate-hz:
80 description: LED HW blink frequency.
81
82 retain-state-suspended:
83 type: boolean
84 description: The suspend state of LED can be retained.
85
86 retain-state-shutdown:
87 type: boolean
88 description: Retain the state of the LED on shutdown.
89
90 required:
91 - compatible
92 - reg
93 - clocks
94 - clock-names
95 - "#gpio-cells"
96 - gpio-controller
97
98 additionalProperties: false
99
100 examples:
101 - |
102 #include <dt-bindings/clock/intel,lgm-clk.h>
103 #include <dt-bindings/leds/common.h>
104
105 ssogpio: ssogpio@e0d40000 {
106 compatible = "intel,lgm-ssoled";
107 reg = <0xE0D40000 0x2E4>;
108 gpio-controller;
109 #gpio-cells = <2>;
110 ngpios = <32>;
111 pinctrl-names = "default";
112 pinctrl-0 = <&pinctrl_ledc>;
113 clocks = <&cgu0 LGM_GCLK_LEDC0>, <&afeclk>;
114 clock-names = "sso", "fpid";
115 intel,sso-update-rate-hz = <250000>;
116
117 led-controller {
118 #address-cells = <1>;
119 #size-cells = <0>;
120
121 led@0 {
122 reg = <0>;
123 function = "gphy";
124 color = <LED_COLOR_ID_GREEN>;
125 led-gpios = <&ssogpio 0 0>;
126 };
127
128 led@2 {
129 reg = <2>;
130 function = LED_FUNCTION_POWER;
131 color = <LED_COLOR_ID_GREEN>;
132 led-gpios = <&ssogpio 23 0>;
133 };
134 };
135 };
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