^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) =================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) LP5521/LP5523/LP55231/LP5562/LP8501 Common Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) =================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) Authors: Milo(Woogyom) Kim <milo.kim@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) Description
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) -----------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) LP5521, LP5523/55231, LP5562 and LP8501 have common features as below.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) Register access via the I2C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) Device initialization/deinitialization
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) Create LED class devices for multiple output channels
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) Device attributes for user-space interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) Program memory for running LED patterns
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) The LP55xx common driver provides these features using exported functions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) lp55xx_init_device() / lp55xx_deinit_device()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) lp55xx_register_leds() / lp55xx_unregister_leds()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) lp55xx_regsister_sysfs() / lp55xx_unregister_sysfs()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) ( Driver Structure Data )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) In lp55xx common driver, two different data structure is used.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * lp55xx_led
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) control multi output LED channels such as led current, channel index.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * lp55xx_chip
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) general chip control such like the I2C and platform data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) For example, LP5521 has maximum 3 LED channels.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) LP5523/55231 has 9 output channels::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) lp55xx_chip for LP5521 ... lp55xx_led #1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) lp55xx_led #2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) lp55xx_led #3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) lp55xx_chip for LP5523 ... lp55xx_led #1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) lp55xx_led #2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) .
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) .
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) lp55xx_led #9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) ( Chip Dependent Code )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) To support device specific configurations, special structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 'lpxx_device_config' is used.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) - Maximum number of channels
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) - Reset command, chip enable command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) - Chip specific initialization
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) - Brightness control register access
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) - Setting LED output current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) - Program memory address access for running patterns
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) - Additional device specific attributes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) ( Firmware Interface )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) LP55xx family devices have the internal program memory for running
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) various LED patterns.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) This pattern data is saved as a file in the user-land or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) hex byte string is written into the memory through the I2C.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) LP55xx common driver supports the firmware interface.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) LP55xx chips have three program engines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) To load and run the pattern, the programming sequence is following.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) (1) Select an engine number (1/2/3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) (2) Mode change to load
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) (3) Write pattern data into selected area
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) (4) Mode change to run
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) The LP55xx common driver provides simple interfaces as below.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) select_engine:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) Select which engine is used for running program
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) run_engine:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) Start program which is loaded via the firmware interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) firmware:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) Load program data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) In case of LP5523, one more command is required, 'enginex_leds'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) It is used for selecting LED output(s) at each engine number.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) In more details, please refer to 'leds-lp5523.txt'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) For example, run blinking pattern in engine #1 of LP5521::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) echo 1 > /sys/bus/i2c/devices/xxxx/select_engine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) echo 1 > /sys/class/firmware/lp5521/loading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) echo "4000600040FF6000" > /sys/class/firmware/lp5521/data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) echo 0 > /sys/class/firmware/lp5521/loading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) echo 1 > /sys/bus/i2c/devices/xxxx/run_engine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) For example, run blinking pattern in engine #3 of LP55231
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) Two LEDs are configured as pattern output channels::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) echo 3 > /sys/bus/i2c/devices/xxxx/select_engine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) echo 1 > /sys/class/firmware/lp55231/loading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) echo "9d0740ff7e0040007e00a0010000" > /sys/class/firmware/lp55231/data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) echo 0 > /sys/class/firmware/lp55231/loading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) echo "000001100" > /sys/bus/i2c/devices/xxxx/engine3_leds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) echo 1 > /sys/bus/i2c/devices/xxxx/run_engine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) To start blinking patterns in engine #2 and #3 simultaneously::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) for idx in 2 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) do
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) echo $idx > /sys/class/leds/red/device/select_engine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) sleep 0.1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) echo 1 > /sys/class/firmware/lp5521/loading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) echo "4000600040FF6000" > /sys/class/firmware/lp5521/data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) echo 0 > /sys/class/firmware/lp5521/loading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) echo 1 > /sys/class/leds/red/device/run_engine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) Here is another example for LP5523.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) Full LED strings are selected by 'engine2_leds'::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) echo 2 > /sys/bus/i2c/devices/xxxx/select_engine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) echo 1 > /sys/class/firmware/lp5523/loading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) echo "9d80400004ff05ff437f0000" > /sys/class/firmware/lp5523/data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) echo 0 > /sys/class/firmware/lp5523/loading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) echo "111111111" > /sys/bus/i2c/devices/xxxx/engine2_leds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) echo 1 > /sys/bus/i2c/devices/xxxx/run_engine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) As soon as 'loading' is set to 0, registered callback is called.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) Inside the callback, the selected engine is loaded and memory is updated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) To run programmed pattern, 'run_engine' attribute should be enabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) The pattern sequence of LP8501 is similar to LP5523.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) However pattern data is specific.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) Ex 1) Engine 1 is used::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) echo 1 > /sys/bus/i2c/devices/xxxx/select_engine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) echo 1 > /sys/class/firmware/lp8501/loading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) echo "9d0140ff7e0040007e00a001c000" > /sys/class/firmware/lp8501/data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) echo 0 > /sys/class/firmware/lp8501/loading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) echo 1 > /sys/bus/i2c/devices/xxxx/run_engine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) Ex 2) Engine 2 and 3 are used at the same time::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) echo 2 > /sys/bus/i2c/devices/xxxx/select_engine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) sleep 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) echo 1 > /sys/class/firmware/lp8501/loading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) echo "9d0140ff7e0040007e00a001c000" > /sys/class/firmware/lp8501/data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) echo 0 > /sys/class/firmware/lp8501/loading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) sleep 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) echo 3 > /sys/bus/i2c/devices/xxxx/select_engine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) sleep 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) echo 1 > /sys/class/firmware/lp8501/loading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) echo "9d0340ff7e0040007e00a001c000" > /sys/class/firmware/lp8501/data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) echo 0 > /sys/class/firmware/lp8501/loading
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) sleep 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) echo 1 > /sys/class/leds/d1/device/run_engine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) ( 'run_engine' and 'firmware_cb' )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) The sequence of running the program data is common.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) But each device has own specific register addresses for commands.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) To support this, 'run_engine' and 'firmware_cb' are configurable in each driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) run_engine:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) Control the selected engine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) firmware_cb:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) The callback function after loading the firmware is done.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) Chip specific commands for loading and updating program memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) ( Predefined pattern data )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) Without the firmware interface, LP55xx driver provides another method for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) loading a LED pattern. That is 'predefined' pattern.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) A predefined pattern is defined in the platform data and load it(or them)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) via the sysfs if needed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) To use the predefined pattern concept, 'patterns' and 'num_patterns' should be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) configured.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) Example of predefined pattern data::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) /* mode_1: blinking data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) static const u8 mode_1[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 0x40, 0x00, 0x60, 0x00, 0x40, 0xFF, 0x60, 0x00,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) /* mode_2: always on */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static const u8 mode_2[] = { 0x40, 0xFF, };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) struct lp55xx_predef_pattern board_led_patterns[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) .r = mode_1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) .size_r = ARRAY_SIZE(mode_1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) .b = mode_2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) .size_b = ARRAY_SIZE(mode_2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) struct lp55xx_platform_data lp5562_pdata = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) ...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) .patterns = board_led_patterns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) .num_patterns = ARRAY_SIZE(board_led_patterns),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) Then, mode_1 and mode_2 can be run via through the sysfs::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) echo 1 > /sys/bus/i2c/devices/xxxx/led_pattern # red blinking LED pattern
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) echo 2 > /sys/bus/i2c/devices/xxxx/led_pattern # blue LED always on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) To stop running pattern::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) echo 0 > /sys/bus/i2c/devices/xxxx/led_pattern
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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