Hi,
We use LED driver(LP5562) on our boards, but led don't light up.
We measure voltage and check EN PIN, they are all normal.
We control it through i2c tools on linux.
The following is some information:
Commands:
/bin/echo 0 > /sys/bus/i2c/devices/0-0032/run_engine
/bin/echo 3 > /sys/bus/i2c/devices/0-0032/select_engine
[ 1888.292550] lp5562 0-0032: Direct firmware load for lp5562 failed with error -2
[ 1888.292641] lp5562 0-0032: Falling back to user helper
(this error don't affect using in other case, like: e2e.ti.com/.../893392)
/bin/echo "RGB" > /sys/bus/i2c/devices/0-0032/engine_mux
/bin/echo 1 > /sys/bus/i2c/devices/0-0032/firmware/lp5562/loading
/bin/echo "4063D00000000000" > /sys/bus/i2c/devices/0-0032/firmware/lp5562/data
/bin/echo 0 > /sys/bus/i2c/devices/0-0032/firmware/lp5562/loading
/bin/echo 1 > /sys/class/i2c-dev/i2c-0/device/0-0032/run_engine
I2C Waveform:
Device Connection:
Please help us check issue.
Thanks
Marten
