0001 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/leds/leds-lp55xx.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: TI/National Semiconductor LP55xx and LP8501 LED Drivers
0008
0009 maintainers:
0010 - Jacek Anaszewski <jacek.anaszewski@gmail.com>
0011 - Pavel Machek <pavel@ucw.cz>
0012
0013 description: |
0014 Bindings for the TI/National Semiconductor LP55xx and LP8501 multi channel
0015 LED Drivers.
0016
0017 For more product information please see the link below:
0018 https://www.ti.com/lit/gpn/lp5521
0019 https://www.ti.com/lit/gpn/lp5523
0020 https://www.ti.com/lit/gpn/lp55231
0021 https://www.ti.com/lit/gpn/lp5562
0022 https://www.ti.com/lit/gpn/lp8501
0023
0024 properties:
0025 compatible:
0026 enum:
0027 - national,lp5521
0028 - national,lp5523
0029 - ti,lp55231
0030 - ti,lp5562
0031 - ti,lp8501
0032
0033 reg:
0034 maxItems: 1
0035 description: I2C slave address
0036
0037 clock-mode:
0038 $ref: /schemas/types.yaml#/definitions/uint8
0039 description: |
0040 Input clock mode
0041 enum:
0042 - 0 # automode
0043 - 1 # internal
0044 - 2 # external
0045
0046 enable-gpio:
0047 maxItems: 1
0048 description: |
0049 GPIO attached to the chip's enable pin
0050
0051 pwr-sel:
0052 $ref: /schemas/types.yaml#/definitions/uint8
0053 description: |
0054 LP8501 specific property. Power selection for output channels.
0055 enum:
0056 - 0 # D1~9 are connected to VDD
0057 - 1 # D1~6 with VDD, D7~9 with VOUT
0058 - 2 # D1~6 with VOUT, D7~9 with VDD
0059 - 3 # D1~9 are connected to VOUT
0060
0061 '#address-cells':
0062 const: 1
0063
0064 '#size-cells':
0065 const: 0
0066
0067 patternProperties:
0068 "(^led@[0-9a-f]$|led)":
0069 type: object
0070 $ref: common.yaml#
0071 properties:
0072 led-cur:
0073 $ref: /schemas/types.yaml#/definitions/uint8
0074 description: |
0075 Current setting at each LED channel (mA x10, 0 if LED is not connected)
0076 minimum: 0
0077 maximum: 255
0078
0079 max-cur:
0080 $ref: /schemas/types.yaml#/definitions/uint8
0081 description: Maximun current at each LED channel.
0082
0083 reg:
0084 description: |
0085 Output channel for the LED. This is zero based channel identifier and
0086 the data sheet is a one based channel identifier.
0087 reg value to output to LED output number
0088 enum:
0089 - 0 # LED output D1
0090 - 1 # LED output D2
0091 - 2 # LED output D3
0092 - 3 # LED output D4
0093 - 4 # LED output D5
0094 - 5 # LED output D6
0095 - 6 # LED output D7
0096 - 7 # LED output D8
0097 - 8 # LED output D9
0098
0099 chan-name:
0100 $ref: /schemas/types.yaml#/definitions/string
0101 description: name of channel
0102
0103 required:
0104 - compatible
0105 - reg
0106
0107 additionalProperties: false
0108
0109 examples:
0110 - |
0111 #include <dt-bindings/leds/common.h>
0112
0113 i2c {
0114 #address-cells = <1>;
0115 #size-cells = <0>;
0116
0117 led-controller@32 {
0118 #address-cells = <1>;
0119 #size-cells = <0>;
0120 compatible = "ti,lp8501";
0121 reg = <0x32>;
0122 clock-mode = /bits/ 8 <2>;
0123 pwr-sel = /bits/ 8 <3>; /* D1~9 connected to VOUT */
0124
0125 led@0 {
0126 reg = <0>;
0127 chan-name = "d1";
0128 led-cur = /bits/ 8 <0x14>;
0129 max-cur = /bits/ 8 <0x20>;
0130 };
0131
0132 led@1 {
0133 reg = <1>;
0134 chan-name = "d2";
0135 led-cur = /bits/ 8 <0x14>;
0136 max-cur = /bits/ 8 <0x20>;
0137 };
0138
0139 led@2 {
0140 reg = <2>;
0141 chan-name = "d3";
0142 led-cur = /bits/ 8 <0x14>;
0143 max-cur = /bits/ 8 <0x20>;
0144 };
0145
0146 led@3 {
0147 reg = <3>;
0148 chan-name = "d4";
0149 led-cur = /bits/ 8 <0x14>;
0150 max-cur = /bits/ 8 <0x20>;
0151 };
0152
0153 led@4 {
0154 reg = <4>;
0155 chan-name = "d5";
0156 led-cur = /bits/ 8 <0x14>;
0157 max-cur = /bits/ 8 <0x20>;
0158 };
0159
0160 led@5 {
0161 reg = <5>;
0162 chan-name = "d6";
0163 led-cur = /bits/ 8 <0x14>;
0164 max-cur = /bits/ 8 <0x20>;
0165 };
0166
0167 led@6 {
0168 reg = <6>;
0169 chan-name = "d7";
0170 led-cur = /bits/ 8 <0x14>;
0171 max-cur = /bits/ 8 <0x20>;
0172 };
0173
0174 led@7 {
0175 reg = <7>;
0176 chan-name = "d8";
0177 led-cur = /bits/ 8 <0x14>;
0178 max-cur = /bits/ 8 <0x20>;
0179 };
0180
0181 led@8 {
0182 reg = <8>;
0183 chan-name = "d9";
0184 led-cur = /bits/ 8 <0x14>;
0185 max-cur = /bits/ 8 <0x20>;
0186 };
0187 };
0188
0189 led-controller@33 {
0190 #address-cells = <1>;
0191 #size-cells = <0>;
0192 compatible = "national,lp5523";
0193 reg = <0x33>;
0194 clock-mode = /bits/ 8 <0>;
0195
0196 multi-led@2 {
0197 #address-cells = <1>;
0198 #size-cells = <0>;
0199 reg = <0x2>;
0200 color = <LED_COLOR_ID_RGB>;
0201 function = LED_FUNCTION_STANDBY;
0202 linux,default-trigger = "heartbeat";
0203
0204 led@0 {
0205 led-cur = /bits/ 8 <50>;
0206 max-cur = /bits/ 8 <100>;
0207 reg = <0x0>;
0208 color = <LED_COLOR_ID_GREEN>;
0209 };
0210
0211 led@1 {
0212 led-cur = /bits/ 8 <50>;
0213 max-cur = /bits/ 8 <100>;
0214 reg = <0x1>;
0215 color = <LED_COLOR_ID_BLUE>;
0216 };
0217
0218 led@6 {
0219 led-cur = /bits/ 8 <50>;
0220 max-cur = /bits/ 8 <100>;
0221 reg = <0x6>;
0222 color = <LED_COLOR_ID_RED>;
0223 };
0224 };
0225 };
0226 };
0227
0228 ...
