Re: [PATCH 1/1] dt-bindings: mfd: add ti,lm8502 combo LED + haptic controller

[Herman van Hazendonk <github.com@herrie.org>]

Thank you for the review feedback.

Acknowledged — the ti,lm8502-leds / ti,lm8502-haptic compatible strings
are a Linux MFD driver artifact rather than a hardware description. The
description text also mentions the OS split, which should be removed.

Before preparing v2 I wanted to ask how you would prefer this structured:

Option A — LP55xx style (no sub-node compatibles):
Individual led@N nodes (reg 0..9 = D1..D10) go directly on the parent,
following leds-lp55xx.yaml. The haptic function is a plain haptic sub-node
(config container for ti,invert-direction) with no compatible. The parent
driver instantiates children via mfd_cells[] keyed on platform device name;
DT parsing is done in the parent driver. This requires companion changes to
the MFD core and child drivers.

Option B — Single flat node:
Fold everything into the parent node. LED channels and haptic described via
properties directly on the I2C device node, no sub-nodes at all. Simpler
binding, but per-LED led-max-microamp config becomes a list property rather
than per-node, which is less readable for a 10-channel device.

My inclination is Option A as it matches the LP55xx precedent, but happy to
follow your preference or any third approach you have in mind.

Signed-off-by: Herman van Hazendonk <github.com@herrie.org>