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