On Sat Dec 10, 2022 at 6:16 PM CET, Pavel Machek wrote:Hi Pavel,
Hi!
Configure the pm6150l flash node for the dual flash LEDs found on FP4.
+&pm6150l_flash {
+ status = "okay";
+
+ led-0 {
+ function = LED_FUNCTION_FLASH;
+ color = <LED_COLOR_ID_YELLOW>;
+ led-sources = <1>;
+ led-max-microamp = <180000>;
+ flash-max-microamp = <1000000>;
+ flash-max-timeout-us = <1280000>;
+ };
Hi Pavel,
I'm pretty sure the flash is not yellow.
The marketing term is Dual LED flash or Dual-tone flash, one LED is a
blue-ish white and one is a yellow-ish white, but from what I can tell,
in the original code it's always referred to as white and yellow so I
also followed that here.
Also the LEDs are right next to each other so in practise for torch just
both go on, and for camera flash I cannot really tell you but I guess
it's doing something there with the camera tuning.
See also this picture:
https://shop.fairphone.com/media/catalog/product/cache/b752d78484639b19641a8560800d919d/p/_/p_5b_main_camera_back.jpg
Plus, how is the node in /sys/class/leds called? Can you make an entry
in Documentation/leds/well-known-leds.txt and ensure the name stays
consistent across devices?
/ # ls -al /sys/class/leds/white:flash/
total 0
drwxr-xr-x 3 0 0 0 Jan 1 00:00 .
drwxr-xr-x 4 0 0 0 Jan 1 00:00 ..
-rw-r--r-- 1 0 0 4096 Jan 1 00:00 brightness
lrwxrwxrwx 1 0 0 0 Jan 1 00:00 device -> ../../../c440000.spmi:pmic@5:led-controller@d300
-rw-r--r-- 1 0 0 4096 Jan 1 00:00 flash_brightness
-r--r--r-- 1 0 0 4096 Jan 1 00:00 flash_fault
-rw-r--r-- 1 0 0 4096 Jan 1 00:00 flash_strobe
-rw-r--r-- 1 0 0 4096 Jan 1 00:00 flash_timeout
-r--r--r-- 1 0 0 4096 Jan 1 00:00 max_brightness
-r--r--r-- 1 0 0 4096 Jan 1 00:00 max_flash_brightness
-r--r--r-- 1 0 0 4096 Jan 1 00:00 max_flash_timeout
drwxr-xr-x 2 0 0 0 Jan 1 00:00 power
lrwxrwxrwx 1 0 0 0 Jan 1 00:00 subsystem -> ../../../../../../../../../class/leds
-rw-r--r-- 1 0 0 4096 Jan 1 00:00 uevent
/ # ls -al /sys/class/leds/yellow:flash/
total 0
drwxr-xr-x 3 0 0 0 Jan 1 00:00 .
drwxr-xr-x 4 0 0 0 Jan 1 00:00 ..
-rw-r--r-- 1 0 0 4096 Jan 1 00:00 brightness
lrwxrwxrwx 1 0 0 0 Jan 1 00:00 device -> ../../../c440000.spmi:pmic@5:led-controller@d300
-rw-r--r-- 1 0 0 4096 Jan 1 00:00 flash_brightness
-r--r--r-- 1 0 0 4096 Jan 1 00:00 flash_fault
-rw-r--r-- 1 0 0 4096 Jan 1 00:00 flash_strobe
-rw-r--r-- 1 0 0 4096 Jan 1 00:00 flash_timeout
-r--r--r-- 1 0 0 4096 Jan 1 00:00 max_brightness
-r--r--r-- 1 0 0 4096 Jan 1 00:00 max_flash_brightness
-r--r--r-- 1 0 0 4096 Jan 1 00:00 max_flash_timeout
drwxr-xr-x 2 0 0 0 Jan 1 00:00 power
lrwxrwxrwx 1 0 0 0 Jan 1 00:00 subsystem -> ../../../../../../../../../class/leds
-rw-r--r-- 1 0 0 4096 Jan 1 00:00 uevent
There's also already flash LED on PinePhone and some MSM8916 devices,
but I think they also have white:flash based on the dt.
Best regards,
Pavel
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