Thread (8 messages) 8 messages, 3 authors, 2024-05-03

RE: EXTERNAL: Re: (subset) [PATCH v1 1/1] backlight: mp3309c: fix leds flickering in pwm mode

From: FLAVIO SULIGOI <f.suligoi@asem.it>
Date: 2024-05-03 06:47:14
Also in: dri-devel, lkml

Hi Lee,

...
Subject: EXTERNAL: Re: (subset) [PATCH v1 1/1] backlight: mp3309c: fix
leds flickering in pwm mode

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On Thu, 02 May 2024, Lee Jones wrote:
quoted
On Wed, 17 Apr 2024 17:31:05 +0200, Flavio Suligoi wrote:
quoted
The mp3309 has two configuration registers, named according to their
address (0x00 and 0x01).
In the second register (0x01), the bit DIMS (Dimming Mode Select)
must be always 0 (zero), in both analog (via i2c commands) and pwm
dimming mode.

In the initial driver version, the DIMS bit was set in pwm mode and
reset in analog mode.
But if the DIMS bit is set in pwm dimming mode and other devices are
connected on the same i2c bus, every i2c commands on the bus
generates a flickering on the LEDs powered by the mp3309c.

[...]
Applied, thanks!

[1/1] backlight: mp3309c: fix leds flickering in pwm mode
      commit: ce60cddc2abf61902dfca71d630624db95315124
Applied, but in future it's; I2C, PWM and LED, thanks.
Sorry for my question, but do you mean that I also have to add the I2C,
PWM and LED mailing lists in my messages related to the mp33309c patches?
--
Lee Jones [李琼斯]
Thanks and best regards,
Flavio
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