Commits on Jun 5, 2023

1. lights: Add LP5562 RGBLED driver …

   This adds support for the TI LP5562 RGB LED driver.
   
   Things to note:
   - The driver is initialized in simple PWM mode using its internal clock,
     for R,G,B, but not for W(hite).
   - The chip doesn't have a WHO_AM_I or DEVICE_ID register to check.
     Instead we read the W_CURRENT register that we're generally not using
     and therefore doesn't get changed.
   - The current is left at the default 17.5 mA but could be changed using
     the command line argument.
   
   Datasheet:
   https://www.ti.com/lit/ds/symlink/lp5562.pdf
   
   Signed-off-by: Julian Oes <julian@oes.ch>

   

   julianoes committed Jun 5, 2023
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