1menu "LED Support" 2 3config LED 4 bool "Enable LED support" 5 depends on DM 6 help 7 Many boards have LEDs which can be used to signal status or alerts. 8 U-Boot provides a uclass API to implement this feature. LED drivers 9 can provide access to board-specific LEDs. Use of the device tree 10 for configuration is encouraged. 11 12config SPL_LED 13 bool "Enable LED support in SPL" 14 depends on SPL && SPL_DM 15 help 16 The LED subsystem adds a small amount of overhead to the image. 17 If this is acceptable and you have a need to use LEDs in SPL, 18 enable this option. You will need to enable device tree in SPL 19 for this to work. 20 21config LED_GPIO 22 bool "LED support for GPIO-connected LEDs" 23 depends on LED && DM_GPIO 24 help 25 Enable support for LEDs which are connected to GPIO lines. These 26 GPIOs may be on the SoC or some other device which provides GPIOs. 27 The GPIO driver must used driver model. LEDs are configured using 28 the device tree. 29 30config SPL_LED_GPIO 31 bool "LED support for GPIO-connected LEDs in SPL" 32 depends on SPL_LED && DM_GPIO 33 help 34 This option is an SPL-variant of the LED_GPIO option. 35 See the help of LED_GPIO for details. 36 37config LED_STATUS 38 bool "Enable status LED API" 39 help 40 Allows common u-boot commands to use a board's leds to 41 provide status for activities like booting and downloading files. 42 43if LED_STATUS 44 45# Hidden constants 46 47config LED_STATUS_OFF 48 int 49 default 0 50 51config LED_STATUS_BLINKING 52 int 53 default 1 54 55config LED_STATUS_ON 56 int 57 default 2 58 59# Hidden constants end 60 61config LED_STATUS_GPIO 62 bool "GPIO status LED implementation" 63 help 64 The status LED can be connected to a GPIO pin. In such cases, the 65 gpio_led driver can be used as a status LED backend implementation. 66 67config LED_STATUS_BOARD_SPECIFIC 68 bool "Specific board" 69 default y 70 help 71 LED support is only for a specific board. 72 73comment "LEDs parameters" 74 75config LED_STATUS0 76 bool "Enable status LED 0" 77 78if LED_STATUS0 79 80config LED_STATUS_BIT 81 int "identification" 82 help 83 CONFIG_LED_STATUS_BIT is passed into the __led_* functions to identify 84 which LED is being acted on. As such, the chosen value must be unique 85 with respect to the other CONFIG_LED_STATUS_BIT's. Mapping the value 86 to a physical LED is the responsibility of the __led_* function. 87 88config LED_STATUS_STATE 89 int "initial state" 90 range LED_STATUS_OFF LED_STATUS_ON 91 default LED_STATUS_OFF 92 help 93 Should be set one of the following: 94 0 - off 95 1 - blinking 96 2 - on 97 98config LED_STATUS_FREQ 99 int "blink frequency" 100 range 2 10 101 default 2 102 help 103 The LED blink period calculated from LED_STATUS_FREQ: 104 LED_STATUS_PERIOD = CONFIG_SYS_HZ/LED_STATUS_FREQ 105 Values range: 2 - 10 106 107endif # LED_STATUS0 108 109config LED_STATUS1 110 bool "Enable status LED 1" 111 112if LED_STATUS1 113 114config LED_STATUS_BIT1 115 int "identification" 116 help 117 CONFIG_LED_STATUS_BIT1 is passed into the __led_* functions to 118 identify which LED is being acted on. As such, the chosen value must 119 be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping 120 the value to a physical LED is the responsibility of the __led_* 121 function. 122 123config LED_STATUS_STATE1 124 int "initial state" 125 range LED_STATUS_OFF LED_STATUS_ON 126 default LED_STATUS_OFF 127 help 128 Should be set one of the following: 129 0 - off 130 1 - blinking 131 2 - on 132 133config LED_STATUS_FREQ1 134 int "blink frequency" 135 range 2 10 136 default 2 137 help 138 The LED blink period calculated from LED_STATUS_FREQ1: 139 LED_STATUS_PERIOD1 = CONFIG_SYS_HZ/LED_STATUS_FREQ1 140 Values range: 2 - 10 141 142endif # LED_STATUS1 143 144config LED_STATUS2 145 bool "Enable status LED 2" 146 147if LED_STATUS2 148 149config LED_STATUS_BIT2 150 int "identification" 151 help 152 CONFIG_LED_STATUS_BIT2 is passed into the __led_* functions to 153 identify which LED is being acted on. As such, the chosen value must 154 be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping 155 the value to a physical LED is the responsibility of the __led_* 156 function. 157 158config LED_STATUS_STATE2 159 int "initial state" 160 range LED_STATUS_OFF LED_STATUS_ON 161 default LED_STATUS_OFF 162 help 163 Should be set one of the following: 164 0 - off 165 1 - blinking 166 2 - on 167 168config LED_STATUS_FREQ2 169 int "blink frequency" 170 range 2 10 171 default 2 172 help 173 The LED blink period calculated from LED_STATUS_FREQ2: 174 LED_STATUS_PERIOD2 = CONFIG_SYS_HZ/LED_STATUS_FREQ2 175 Values range: 2 - 10 176 177endif # LED_STATUS2 178 179config LED_STATUS3 180 bool "Enable status LED 3" 181 182if LED_STATUS3 183 184config LED_STATUS_BIT3 185 int "identification" 186 help 187 CONFIG_LED_STATUS_BIT3 is passed into the __led_* functions to 188 identify which LED is being acted on. As such, the chosen value must 189 be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping 190 the value to a physical LED is the responsibility of the __led_* 191 function. 192 193config LED_STATUS_STATE3 194 int "initial state" 195 range LED_STATUS_OFF LED_STATUS_ON 196 default LED_STATUS_OFF 197 help 198 Should be set one of the following: 199 0 - off 200 1 - blinking 201 2 - on 202 203config LED_STATUS_FREQ3 204 int "blink frequency" 205 range 2 10 206 default 2 207 help 208 The LED blink period calculated from LED_STATUS_FREQ3: 209 LED_STATUS_PERIOD3 = CONFIG_SYS_HZ/LED_STATUS_FREQ3 210 Values range: 2 - 10 211 212endif # LED_STATUS3 213 214config LED_STATUS4 215 bool "Enable status LED 4" 216 217if LED_STATUS4 218 219config LED_STATUS_BIT4 220 int "identification" 221 help 222 CONFIG_LED_STATUS_BIT4 is passed into the __led_* functions to 223 identify which LED is being acted on. As such, the chosen value must 224 be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping 225 the value to a physical LED is the responsibility of the __led_* 226 function. 227 228config LED_STATUS_STATE4 229 int "initial state" 230 range LED_STATUS_OFF LED_STATUS_ON 231 default LED_STATUS_OFF 232 help 233 Should be set one of the following: 234 0 - off 235 1 - blinking 236 2 - on 237 238config LED_STATUS_FREQ4 239 int "blink frequency" 240 range 2 10 241 default 2 242 help 243 The LED blink period calculated from LED_STATUS_FREQ4: 244 LED_STATUS_PERIOD4 = CONFIG_SYS_HZ/LED_STATUS_FREQ4 245 Values range: 2 - 10 246 247endif # LED_STATUS4 248 249config LED_STATUS5 250 bool "Enable status LED 5" 251 252if LED_STATUS5 253 254config LED_STATUS_BIT5 255 int "identification" 256 help 257 CONFIG_LED_STATUS_BIT5 is passed into the __led_* functions to 258 identify which LED is being acted on. As such, the chosen value must 259 be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping 260 the value to a physical LED is the responsibility of the __led_* 261 function. 262 263config LED_STATUS_STATE5 264 int "initial state" 265 range LED_STATUS_OFF LED_STATUS_ON 266 default LED_STATUS_OFF 267 help 268 Should be set one of the following: 269 0 - off 270 1 - blinking 271 2 - on 272 273config LED_STATUS_FREQ5 274 int "blink frequency" 275 range 2 10 276 default 2 277 help 278 The LED blink period calculated from LED_STATUS_FREQ5: 279 LED_STATUS_PERIOD5 = CONFIG_SYS_HZ/LED_STATUS_FREQ5 280 Values range: 2 - 10 281 282endif # LED_STATUS5 283 284config LED_STATUS_BOOT_ENABLE 285 bool "Enable BOOT LED" 286 help 287 Enable to turn an LED on when the board is booting. 288 289if LED_STATUS_BOOT_ENABLE 290 291config LED_STATUS_BOOT 292 int "LED to light when the board is booting" 293 help 294 Valid enabled LED device number. 295 296endif # LED_STATUS_BOOT_ENABLE 297 298config LED_STATUS_RED_ENABLE 299 bool "Enable red LED" 300 help 301 Enable red status LED. 302 303if LED_STATUS_RED_ENABLE 304 305config LED_STATUS_RED 306 int "Red LED identification" 307 help 308 Valid enabled LED device number. 309 310endif # LED_STATUS_RED_ENABLE 311 312config LED_STATUS_YELLOW_ENABLE 313 bool "Enable yellow LED" 314 help 315 Enable yellow status LED. 316 317if LED_STATUS_YELLOW_ENABLE 318 319config LED_STATUS_YELLOW 320 int "Yellow LED identification" 321 help 322 Valid enabled LED device number. 323 324endif # LED_STATUS_YELLOW_ENABLE 325 326config LED_STATUS_BLUE_ENABLE 327 bool "Enable blue LED" 328 help 329 Enable blue status LED. 330 331if LED_STATUS_BLUE_ENABLE 332 333config LED_STATUS_BLUE 334 int "Blue LED identification" 335 help 336 Valid enabled LED device number. 337 338endif # LED_STATUS_BLUE_ENABLE 339 340config LED_STATUS_GREEN_ENABLE 341 bool "Enable green LED" 342 help 343 Enable green status LED. 344 345if LED_STATUS_GREEN_ENABLE 346 347config LED_STATUS_GREEN 348 int "Green LED identification" 349 help 350 Valid enabled LED device number (0-5). 351 352endif # LED_STATUS_GREEN_ENABLE 353 354config LED_STATUS_CMD 355 bool "Enable status LED commands" 356 357endif # LED_STATUS 358 359endmenu 360