* LP8860 driver writes EEPROM on every probe
@ 2025-10-23 15:02 David Owens
0 siblings, 0 replies; only message in thread
From: David Owens @ 2025-10-23 15:02 UTC (permalink / raw)
To: afd; +Cc: lee, linux-kernel, linux-leds, pavel
I have a display device that uses the LP8860 as the backlight controller.
Recently, I switched from direct i2c writes to control brighness to using the
leds-lp8860 driver and noticed that factory provisioning was lost/over-written.
Is it correct to write to EEPROM every time lp8860 probes? I've read that the
device can survive ~1000 EEPROM writes but I don't see that limit specifically
called out in TI's End Of Line programming guide
(https://www.ti.com/lit/an/snva797/snva797.pdf). Even so, Writing to EEPROM
during every power cycle doesn't seem right. I know this driver has been
around for quite a while so I hope I'm just missing something.
Any insight would be appreciated.
Thanks,
Dave
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