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 LED_BCM6328 13 bool "LED Support for BCM6328" 14 depends on LED && ARCH_BMIPS 15 help 16 This option enables support for LEDs connected to the BCM6328 17 LED HW controller accessed via MMIO registers. 18 HW blinking is supported and up to 24 LEDs can be controlled. 19 All LEDs can blink at the same time but the delay is shared, which 20 means that if one LED is set to blink at 100ms and then a different 21 LED is set to blink at 200ms, both will blink at 200ms. 22 23config LED_BLINK 24 bool "Support LED blinking" 25 depends on LED 26 help 27 Some drivers can support automatic blinking of LEDs with a given 28 period, without needing timers or extra code to handle the timing. 29 This option enables support for this which adds slightly to the 30 code size. 31 32config SPL_LED 33 bool "Enable LED support in SPL" 34 depends on SPL && SPL_DM 35 help 36 The LED subsystem adds a small amount of overhead to the image. 37 If this is acceptable and you have a need to use LEDs in SPL, 38 enable this option. You will need to enable device tree in SPL 39 for this to work. 40 41config LED_GPIO 42 bool "LED support for GPIO-connected LEDs" 43 depends on LED && DM_GPIO 44 help 45 Enable support for LEDs which are connected to GPIO lines. These 46 GPIOs may be on the SoC or some other device which provides GPIOs. 47 The GPIO driver must used driver model. LEDs are configured using 48 the device tree. 49 50config SPL_LED_GPIO 51 bool "LED support for GPIO-connected LEDs in SPL" 52 depends on SPL_LED && DM_GPIO 53 help 54 This option is an SPL-variant of the LED_GPIO option. 55 See the help of LED_GPIO for details. 56 57config LED_STATUS 58 bool "Enable status LED API" 59 help 60 Allows common u-boot commands to use a board's leds to 61 provide status for activities like booting and downloading files. 62 63if LED_STATUS 64 65# Hidden constants 66 67config LED_STATUS_OFF 68 int 69 default 0 70 71config LED_STATUS_BLINKING 72 int 73 default 1 74 75config LED_STATUS_ON 76 int 77 default 2 78 79# Hidden constants end 80 81config LED_STATUS_GPIO 82 bool "GPIO status LED implementation" 83 help 84 The status LED can be connected to a GPIO pin. In such cases, the 85 gpio_led driver can be used as a status LED backend implementation. 86 87config LED_STATUS_BOARD_SPECIFIC 88 bool "Specific board" 89 default y 90 help 91 LED support is only for a specific board. 92 93comment "LEDs parameters" 94 95config LED_STATUS0 96 bool "Enable status LED 0" 97 98if LED_STATUS0 99 100config LED_STATUS_BIT 101 int "identification" 102 help 103 CONFIG_LED_STATUS_BIT is passed into the __led_* functions to identify 104 which LED is being acted on. As such, the chosen value must be unique 105 with respect to the other CONFIG_LED_STATUS_BIT's. Mapping the value 106 to a physical LED is the responsibility of the __led_* function. 107 108config LED_STATUS_STATE 109 int "initial state" 110 range LED_STATUS_OFF LED_STATUS_ON 111 default LED_STATUS_OFF 112 help 113 Should be set one of the following: 114 0 - off 115 1 - blinking 116 2 - on 117 118config LED_STATUS_FREQ 119 int "blink frequency" 120 range 2 10 121 default 2 122 help 123 The LED blink period calculated from LED_STATUS_FREQ: 124 LED_STATUS_PERIOD = CONFIG_SYS_HZ/LED_STATUS_FREQ 125 Values range: 2 - 10 126 127endif # LED_STATUS0 128 129config LED_STATUS1 130 bool "Enable status LED 1" 131 132if LED_STATUS1 133 134config LED_STATUS_BIT1 135 int "identification" 136 help 137 CONFIG_LED_STATUS_BIT1 is passed into the __led_* functions to 138 identify which LED is being acted on. As such, the chosen value must 139 be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping 140 the value to a physical LED is the responsibility of the __led_* 141 function. 142 143config LED_STATUS_STATE1 144 int "initial state" 145 range LED_STATUS_OFF LED_STATUS_ON 146 default LED_STATUS_OFF 147 help 148 Should be set one of the following: 149 0 - off 150 1 - blinking 151 2 - on 152 153config LED_STATUS_FREQ1 154 int "blink frequency" 155 range 2 10 156 default 2 157 help 158 The LED blink period calculated from LED_STATUS_FREQ1: 159 LED_STATUS_PERIOD1 = CONFIG_SYS_HZ/LED_STATUS_FREQ1 160 Values range: 2 - 10 161 162endif # LED_STATUS1 163 164config LED_STATUS2 165 bool "Enable status LED 2" 166 167if LED_STATUS2 168 169config LED_STATUS_BIT2 170 int "identification" 171 help 172 CONFIG_LED_STATUS_BIT2 is passed into the __led_* functions to 173 identify which LED is being acted on. As such, the chosen value must 174 be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping 175 the value to a physical LED is the responsibility of the __led_* 176 function. 177 178config LED_STATUS_STATE2 179 int "initial state" 180 range LED_STATUS_OFF LED_STATUS_ON 181 default LED_STATUS_OFF 182 help 183 Should be set one of the following: 184 0 - off 185 1 - blinking 186 2 - on 187 188config LED_STATUS_FREQ2 189 int "blink frequency" 190 range 2 10 191 default 2 192 help 193 The LED blink period calculated from LED_STATUS_FREQ2: 194 LED_STATUS_PERIOD2 = CONFIG_SYS_HZ/LED_STATUS_FREQ2 195 Values range: 2 - 10 196 197endif # LED_STATUS2 198 199config LED_STATUS3 200 bool "Enable status LED 3" 201 202if LED_STATUS3 203 204config LED_STATUS_BIT3 205 int "identification" 206 help 207 CONFIG_LED_STATUS_BIT3 is passed into the __led_* functions to 208 identify which LED is being acted on. As such, the chosen value must 209 be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping 210 the value to a physical LED is the responsibility of the __led_* 211 function. 212 213config LED_STATUS_STATE3 214 int "initial state" 215 range LED_STATUS_OFF LED_STATUS_ON 216 default LED_STATUS_OFF 217 help 218 Should be set one of the following: 219 0 - off 220 1 - blinking 221 2 - on 222 223config LED_STATUS_FREQ3 224 int "blink frequency" 225 range 2 10 226 default 2 227 help 228 The LED blink period calculated from LED_STATUS_FREQ3: 229 LED_STATUS_PERIOD3 = CONFIG_SYS_HZ/LED_STATUS_FREQ3 230 Values range: 2 - 10 231 232endif # LED_STATUS3 233 234config LED_STATUS4 235 bool "Enable status LED 4" 236 237if LED_STATUS4 238 239config LED_STATUS_BIT4 240 int "identification" 241 help 242 CONFIG_LED_STATUS_BIT4 is passed into the __led_* functions to 243 identify which LED is being acted on. As such, the chosen value must 244 be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping 245 the value to a physical LED is the responsibility of the __led_* 246 function. 247 248config LED_STATUS_STATE4 249 int "initial state" 250 range LED_STATUS_OFF LED_STATUS_ON 251 default LED_STATUS_OFF 252 help 253 Should be set one of the following: 254 0 - off 255 1 - blinking 256 2 - on 257 258config LED_STATUS_FREQ4 259 int "blink frequency" 260 range 2 10 261 default 2 262 help 263 The LED blink period calculated from LED_STATUS_FREQ4: 264 LED_STATUS_PERIOD4 = CONFIG_SYS_HZ/LED_STATUS_FREQ4 265 Values range: 2 - 10 266 267endif # LED_STATUS4 268 269config LED_STATUS5 270 bool "Enable status LED 5" 271 272if LED_STATUS5 273 274config LED_STATUS_BIT5 275 int "identification" 276 help 277 CONFIG_LED_STATUS_BIT5 is passed into the __led_* functions to 278 identify which LED is being acted on. As such, the chosen value must 279 be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping 280 the value to a physical LED is the responsibility of the __led_* 281 function. 282 283config LED_STATUS_STATE5 284 int "initial state" 285 range LED_STATUS_OFF LED_STATUS_ON 286 default LED_STATUS_OFF 287 help 288 Should be set one of the following: 289 0 - off 290 1 - blinking 291 2 - on 292 293config LED_STATUS_FREQ5 294 int "blink frequency" 295 range 2 10 296 default 2 297 help 298 The LED blink period calculated from LED_STATUS_FREQ5: 299 LED_STATUS_PERIOD5 = CONFIG_SYS_HZ/LED_STATUS_FREQ5 300 Values range: 2 - 10 301 302endif # LED_STATUS5 303 304config LED_STATUS_BOOT_ENABLE 305 bool "Enable BOOT LED" 306 help 307 Enable to turn an LED on when the board is booting. 308 309if LED_STATUS_BOOT_ENABLE 310 311config LED_STATUS_BOOT 312 int "LED to light when the board is booting" 313 help 314 Valid enabled LED device number. 315 316endif # LED_STATUS_BOOT_ENABLE 317 318config LED_STATUS_RED_ENABLE 319 bool "Enable red LED" 320 help 321 Enable red status LED. 322 323if LED_STATUS_RED_ENABLE 324 325config LED_STATUS_RED 326 int "Red LED identification" 327 help 328 Valid enabled LED device number. 329 330endif # LED_STATUS_RED_ENABLE 331 332config LED_STATUS_YELLOW_ENABLE 333 bool "Enable yellow LED" 334 help 335 Enable yellow status LED. 336 337if LED_STATUS_YELLOW_ENABLE 338 339config LED_STATUS_YELLOW 340 int "Yellow LED identification" 341 help 342 Valid enabled LED device number. 343 344endif # LED_STATUS_YELLOW_ENABLE 345 346config LED_STATUS_BLUE_ENABLE 347 bool "Enable blue LED" 348 help 349 Enable blue status LED. 350 351if LED_STATUS_BLUE_ENABLE 352 353config LED_STATUS_BLUE 354 int "Blue LED identification" 355 help 356 Valid enabled LED device number. 357 358endif # LED_STATUS_BLUE_ENABLE 359 360config LED_STATUS_GREEN_ENABLE 361 bool "Enable green LED" 362 help 363 Enable green status LED. 364 365if LED_STATUS_GREEN_ENABLE 366 367config LED_STATUS_GREEN 368 int "Green LED identification" 369 help 370 Valid enabled LED device number (0-5). 371 372endif # LED_STATUS_GREEN_ENABLE 373 374config LED_STATUS_CMD 375 bool "Enable status LED commands" 376 377endif # LED_STATUS 378 379endmenu 380