LP5816: Flash White LED (1s on / 1s off) in U-Boot 2023

Avinash N

Part Number: LP5816
Other Parts Discussed in Thread: LP5815

Tool/software:

Hi All,

We are currently using LP5816 for led control. I can able to achieve solid white LED behavior with below configuration.

i2c dev 0;
i2c probe;
i2c mw 2c 0x0.1 0x01
i2c mw 2c 0x1.1 0x01
i2c mw 2c 0x17.1 0xFF
i2c mw 2c 0x2.1 0x0F
i2c mw 2c 0xF.1 0x55
i2c mw 2c 0x1B.1 0xFF

I have tried to configure the DEV_CONFIG2 and DEV_CONFIG3 as per the section 7.3.2 and 7.3.3 but only ramp up is achieved.

Question :

1. Whether Instant Blinking is achievable in LP5816 (Automatic On / Off for 1 Sec time interval)

2. If Automatic On / Off for 1 Sec time interval is possible to achieve, Kindly share us the register configuration for validation purpose.

24 days ago

0 Gui He 23 days ago

TI__Mastermind 27296 points

Hi Avinash

Our expert will reply to you later.

Thanks and best regards.

0 Avinash N 23 days ago in reply to Gui He

Prodigy 20 points

Hi Gui He ,

As we are planning for production, this needs Urgent support. If the LP5816 does not support Instant Blinking, we need to confirm the current behavior to customer. Else modify the LED Design (i.e, which is very critical at the production time).

Waiting for your response as early as possible.