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      1 menu "LED Support"
      2 
      3 config 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 
     12 config 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 
     23 config LED_BCM6358
     24 	bool "LED Support for BCM6358"
     25 	depends on LED && ARCH_BMIPS
     26 	help
     27 	  This option enables support for LEDs connected to the BCM6358
     28 	  LED HW controller accessed via MMIO registers.
     29 	  HW has no blinking capabilities and up to 32 LEDs can be controlled.
     30 
     31 config LED_BLINK
     32 	bool "Support LED blinking"
     33 	depends on LED
     34 	help
     35 	  Some drivers can support automatic blinking of LEDs with a given
     36 	  period, without needing timers or extra code to handle the timing.
     37 	  This option enables support for this which adds slightly to the
     38 	  code size.
     39 
     40 config SPL_LED
     41 	bool "Enable LED support in SPL"
     42 	depends on SPL && SPL_DM
     43 	help
     44 	  The LED subsystem adds a small amount of overhead to the image.
     45 	  If this is acceptable and you have a need to use LEDs in SPL,
     46 	  enable this option. You will need to enable device tree in SPL
     47 	  for this to work.
     48 
     49 config LED_GPIO
     50 	bool "LED support for GPIO-connected LEDs"
     51 	depends on LED && DM_GPIO
     52 	help
     53 	  Enable support for LEDs which are connected to GPIO lines. These
     54 	  GPIOs may be on the SoC or some other device which provides GPIOs.
     55 	  The GPIO driver must used driver model. LEDs are configured using
     56 	  the device tree.
     57 
     58 config SPL_LED_GPIO
     59 	bool "LED support for GPIO-connected LEDs in SPL"
     60         depends on SPL_LED && DM_GPIO
     61 	help
     62 	  This option is an SPL-variant of the LED_GPIO option.
     63 	  See the help of LED_GPIO for details.
     64 
     65 config LED_STATUS
     66 	bool "Enable status LED API"
     67 	help
     68 	  Allows common u-boot commands to use a board's leds to
     69 	  provide status for activities like booting and downloading files.
     70 
     71 if LED_STATUS
     72 
     73 # Hidden constants
     74 
     75 config LED_STATUS_OFF
     76 	int
     77 	default 0
     78 
     79 config LED_STATUS_BLINKING
     80 	int
     81 	default 1
     82 
     83 config LED_STATUS_ON
     84 	int
     85 	default 2
     86 
     87 # Hidden constants end
     88 
     89 config LED_STATUS_GPIO
     90 	bool "GPIO status LED implementation"
     91 	help
     92 	  The status LED can be connected to a GPIO pin. In such cases, the
     93 	  gpio_led driver can be used as a status LED backend implementation.
     94 
     95 config LED_STATUS_BOARD_SPECIFIC
     96 	bool "Specific board"
     97 	default y
     98 	help
     99 	  LED support is only for a specific board.
    100 
    101 comment "LEDs parameters"
    102 
    103 config LED_STATUS0
    104 	bool "Enable status LED 0"
    105 
    106 if LED_STATUS0
    107 
    108 config LED_STATUS_BIT
    109 	int "identification"
    110 	help
    111 	  CONFIG_LED_STATUS_BIT is passed into the __led_* functions to identify
    112 	  which LED is being acted on.  As such, the chosen value must be unique
    113 	  with respect to the other CONFIG_LED_STATUS_BIT's. Mapping the value
    114 	  to a physical LED is the responsibility of the __led_* function.
    115 
    116 config LED_STATUS_STATE
    117 	int "initial state"
    118 	range LED_STATUS_OFF LED_STATUS_ON
    119 	default LED_STATUS_OFF
    120 	help
    121 	  Should be set one of the following:
    122 	  0 - off
    123 	  1 - blinking
    124 	  2 - on
    125 
    126 config LED_STATUS_FREQ
    127 	int "blink frequency"
    128 	range 2 10
    129 	default 2
    130 	help
    131 	  The LED blink period calculated from LED_STATUS_FREQ:
    132 	  LED_STATUS_PERIOD = CONFIG_SYS_HZ/LED_STATUS_FREQ
    133 	  Values range: 2 - 10
    134 
    135 endif # LED_STATUS0
    136 
    137 config LED_STATUS1
    138 	bool "Enable status LED 1"
    139 
    140 if LED_STATUS1
    141 
    142 config LED_STATUS_BIT1
    143 	int "identification"
    144 	help
    145 	  CONFIG_LED_STATUS_BIT1 is passed into the __led_* functions to
    146 	  identify which LED is being acted on.  As such, the chosen value must
    147 	  be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping
    148 	  the value to a physical LED is the responsibility of the __led_*
    149 	  function.
    150 
    151 config LED_STATUS_STATE1
    152 	int "initial state"
    153 	range LED_STATUS_OFF LED_STATUS_ON
    154 	default LED_STATUS_OFF
    155 	help
    156 	  Should be set one of the following:
    157 	  0 - off
    158 	  1 - blinking
    159 	  2 - on
    160 
    161 config LED_STATUS_FREQ1
    162 	int "blink frequency"
    163 	range 2 10
    164 	default 2
    165 	help
    166 	  The LED blink period calculated from LED_STATUS_FREQ1:
    167 	  LED_STATUS_PERIOD1 = CONFIG_SYS_HZ/LED_STATUS_FREQ1
    168 	  Values range: 2 - 10
    169 
    170 endif # LED_STATUS1
    171 
    172 config LED_STATUS2
    173 	bool "Enable status LED 2"
    174 
    175 if LED_STATUS2
    176 
    177 config LED_STATUS_BIT2
    178 	int "identification"
    179 	help
    180 	  CONFIG_LED_STATUS_BIT2 is passed into the __led_* functions to
    181 	  identify which LED is being acted on.  As such, the chosen value must
    182 	  be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping
    183 	  the value to a physical LED is the responsibility of the __led_*
    184 	  function.
    185 
    186 config LED_STATUS_STATE2
    187 	int "initial state"
    188 	range LED_STATUS_OFF LED_STATUS_ON
    189 	default LED_STATUS_OFF
    190 	help
    191 	  Should be set one of the following:
    192 	  0 - off
    193 	  1 - blinking
    194 	  2 - on
    195 
    196 config LED_STATUS_FREQ2
    197 	int "blink frequency"
    198 	range 2 10
    199 	default 2
    200 	help
    201 	  The LED blink period calculated from LED_STATUS_FREQ2:
    202 	  LED_STATUS_PERIOD2 = CONFIG_SYS_HZ/LED_STATUS_FREQ2
    203 	  Values range: 2 - 10
    204 
    205 endif # LED_STATUS2
    206 
    207 config LED_STATUS3
    208 	bool "Enable status LED 3"
    209 
    210 if LED_STATUS3
    211 
    212 config LED_STATUS_BIT3
    213 	int "identification"
    214 	help
    215 	  CONFIG_LED_STATUS_BIT3 is passed into the __led_* functions to
    216 	  identify which LED is being acted on.  As such, the chosen value must
    217 	  be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping
    218 	  the value to a physical LED is the responsibility of the __led_*
    219 	  function.
    220 
    221 config LED_STATUS_STATE3
    222 	int "initial state"
    223 	range LED_STATUS_OFF LED_STATUS_ON
    224 	default LED_STATUS_OFF
    225 	help
    226 	  Should be set one of the following:
    227 	  0 - off
    228 	  1 - blinking
    229 	  2 - on
    230 
    231 config LED_STATUS_FREQ3
    232 	int "blink frequency"
    233 	range 2 10
    234 	default 2
    235 	help
    236 	  The LED blink period calculated from LED_STATUS_FREQ3:
    237 	  LED_STATUS_PERIOD3 = CONFIG_SYS_HZ/LED_STATUS_FREQ3
    238 	  Values range: 2 - 10
    239 
    240 endif # LED_STATUS3
    241 
    242 config LED_STATUS4
    243 	bool "Enable status LED 4"
    244 
    245 if LED_STATUS4
    246 
    247 config LED_STATUS_BIT4
    248 	int "identification"
    249 	help
    250 	  CONFIG_LED_STATUS_BIT4 is passed into the __led_* functions to
    251 	  identify which LED is being acted on.  As such, the chosen value must
    252 	  be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping
    253 	  the value to a physical LED is the responsibility of the __led_*
    254 	  function.
    255 
    256 config LED_STATUS_STATE4
    257 	int "initial state"
    258 	range LED_STATUS_OFF LED_STATUS_ON
    259 	default LED_STATUS_OFF
    260 	help
    261 	  Should be set one of the following:
    262 	  0 - off
    263 	  1 - blinking
    264 	  2 - on
    265 
    266 config LED_STATUS_FREQ4
    267 	int "blink frequency"
    268 	range 2 10
    269 	default 2
    270 	help
    271 	  The LED blink period calculated from LED_STATUS_FREQ4:
    272 	  LED_STATUS_PERIOD4 = CONFIG_SYS_HZ/LED_STATUS_FREQ4
    273 	  Values range: 2 - 10
    274 
    275 endif # LED_STATUS4
    276 
    277 config LED_STATUS5
    278 	bool "Enable status LED 5"
    279 
    280 if LED_STATUS5
    281 
    282 config LED_STATUS_BIT5
    283 	int "identification"
    284 	help
    285 	  CONFIG_LED_STATUS_BIT5 is passed into the __led_* functions to
    286 	  identify which LED is being acted on.  As such, the chosen value must
    287 	  be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping
    288 	  the value to a physical LED is the responsibility of the __led_*
    289 	  function.
    290 
    291 config LED_STATUS_STATE5
    292 	int "initial state"
    293 	range LED_STATUS_OFF LED_STATUS_ON
    294 	default LED_STATUS_OFF
    295 	help
    296 	  Should be set one of the following:
    297 	  0 - off
    298 	  1 - blinking
    299 	  2 - on
    300 
    301 config LED_STATUS_FREQ5
    302 	int "blink frequency"
    303 	range 2 10
    304 	default 2
    305 	help
    306 	  The LED blink period calculated from LED_STATUS_FREQ5:
    307 	  LED_STATUS_PERIOD5 = CONFIG_SYS_HZ/LED_STATUS_FREQ5
    308 	  Values range: 2 - 10
    309 
    310 endif # LED_STATUS5
    311 
    312 config LED_STATUS_BOOT_ENABLE
    313 	bool "Enable BOOT LED"
    314 	help
    315 	  Enable to turn an LED on when the board is booting.
    316 
    317 if LED_STATUS_BOOT_ENABLE
    318 
    319 config LED_STATUS_BOOT
    320 	int "LED to light when the board is booting"
    321 	help
    322 	  Valid enabled LED device number.
    323 
    324 endif # LED_STATUS_BOOT_ENABLE
    325 
    326 config LED_STATUS_RED_ENABLE
    327 	bool "Enable red LED"
    328 	help
    329 	  Enable red status LED.
    330 
    331 if LED_STATUS_RED_ENABLE
    332 
    333 config LED_STATUS_RED
    334 	int "Red LED identification"
    335 	help
    336 	  Valid enabled LED device number.
    337 
    338 endif # LED_STATUS_RED_ENABLE
    339 
    340 config LED_STATUS_YELLOW_ENABLE
    341 	bool "Enable yellow LED"
    342 	help
    343 	  Enable yellow status LED.
    344 
    345 if LED_STATUS_YELLOW_ENABLE
    346 
    347 config LED_STATUS_YELLOW
    348 	int "Yellow LED identification"
    349 	help
    350 	  Valid enabled LED device number.
    351 
    352 endif # LED_STATUS_YELLOW_ENABLE
    353 
    354 config LED_STATUS_BLUE_ENABLE
    355 	bool "Enable blue LED"
    356 	help
    357 	  Enable blue status LED.
    358 
    359 if LED_STATUS_BLUE_ENABLE
    360 
    361 config LED_STATUS_BLUE
    362 	int "Blue LED identification"
    363 	help
    364 	  Valid enabled LED device number.
    365 
    366 endif # LED_STATUS_BLUE_ENABLE
    367 
    368 config LED_STATUS_GREEN_ENABLE
    369 	bool "Enable green LED"
    370 	help
    371 	  Enable green status LED.
    372 
    373 if LED_STATUS_GREEN_ENABLE
    374 
    375 config LED_STATUS_GREEN
    376 	int "Green LED identification"
    377 	help
    378 	  Valid enabled LED device number (0-5).
    379 
    380 endif # LED_STATUS_GREEN_ENABLE
    381 
    382 config LED_STATUS_CMD
    383 	bool "Enable status LED commands"
    384 
    385 endif # LED_STATUS
    386 
    387 endmenu
    388