linux-kernel - [PATCH v3 0/2] iio: health: max30100: Add DT LED pulse-width support

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Message-ID: <20251012173035.12536-1-raskar.shree97@gmail.com>
Date: Sun, 12 Oct 2025 23:00:33 +0530
From: Shrikant Raskar <raskar.shree97@...il.com>
To: jic23@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org
Cc: dlechner@...libre.com,
	nuno.sa@...log.com,
	andy@...nel.org,
	matt@...ostay.sg,
	skhan@...uxfoundation.org,
	david.hunter.linux@...il.com,
	linux-iio@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-kernel-mentees@...ts.linux.dev,
	Shrikant Raskar <raskar.shree97@...il.com>
Subject: [PATCH v3 0/2] iio: health: max30100: Add DT LED pulse-width support

Add Device Tree support for configuring the LED pulse-width of the MAX30100
sensor, and updates the driver to read and apply this property. 

Testing:
- Verify DT property read successfully in probe().
- Verify default fallback to 1600 us when DT property is omitted.
- Confirm SPO2_CONFIG register programmed correctly using regmap_read().
- Validate different DT pulse-width values (200, 400, 800, 1600 us)
  are applied correctly.
- Validate probe() failure for invalid LED pulse-width
- Tested-on: Raspberry Pi 3B + MAX30100 breakout board

Changelog:
Changes from v2:
- Fix DT binding schema errors
- Add default value
- Remove changelog from commit message
- Add missing header file

Shrikant Raskar (2):
  dt-bindings: iio: health: max30100: Add LED pulse-width property
  iio: health: max30100: Make LED pulse-width configurable via DT

 .../bindings/iio/health/maxim,max30100.yaml   |  8 ++++
 drivers/iio/health/max30100.c                 | 38 +++++++++++++++++--
 2 files changed, 43 insertions(+), 3 deletions(-)


base-commit: 8bd9238e511d02831022ff0270865c54ccc482d6
-- 
2.43.0