| From: |
| Maud Spierings via B4 Relay <devnull+maudspierings.gocontroll.com-AT-kernel.org> |
| To: |
| Lee Jones <lee-AT-kernel.org>, Daniel Thompson <danielt-AT-kernel.org>, Jingoo Han <jingoohan1-AT-gmail.com>, Pavel Machek <pavel-AT-kernel.org>, Rob Herring <robh-AT-kernel.org>, Krzysztof Kozlowski <krzk+dt-AT-kernel.org>, Conor Dooley <conor+dt-AT-kernel.org>, Helge Deller <deller-AT-gmx.de>, Shawn Guo <shawnguo-AT-kernel.org>, Sascha Hauer <s.hauer-AT-pengutronix.de>, Pengutronix Kernel Team <kernel-AT-pengutronix.de>, Fabio Estevam <festevam-AT-gmail.com>, Liam Girdwood <lgirdwood-AT-gmail.com>, Mark Brown <broonie-AT-kernel.org> |
| Subject: |
| [PATCH v4 0/4] backlight: add new max25014 backlight driver |
| Date: |
| Thu, 09 Oct 2025 08:48:24 +0200 |
| Message-ID: |
| <20251009-max25014-v4-0-6adb2a0aa35f@gocontroll.com> |
| Cc: |
| dri-devel-AT-lists.freedesktop.org, linux-leds-AT-vger.kernel.org, devicetree-AT-vger.kernel.org, linux-kernel-AT-vger.kernel.org, linux-fbdev-AT-vger.kernel.org, imx-AT-lists.linux.dev, linux-arm-kernel-AT-lists.infradead.org, Maud Spierings <maudspierings-AT-gocontroll.com> |
| Archive-link: |
| Article |
The Maxim MAX25014 is an automotive grade backlight driver IC. Its
datasheet can be found at [1].
With its integrated boost controller, it can power 4 channels (led
strings) and has a number of different modes using pwm and or i2c.
Currently implemented is only i2c control.
link: https://www.analog.com/media/en/technical-documentation/d... [1]
Signed-off-by: Maud Spierings <maudspierings@gocontroll.com>
---
Changes in v4:
- use a led node to describe the backlight
- use led-sources to enable specific channels
- also wait 2ms when there is a supply but no enable
- change dev_warn() to dev_err() in error path in max25014_check_errors()
- set backlight_properties.scale to BACKLIGHT_SCALE_LINEAR
- rebase latest next
- add address-cells and size-cells to i2c4 in av101hdt-a10.dtso
- Link to v3: https://lore.kernel.org/r/20250911-max25014-v3-0-d03f4eba...
Changes in v3:
- fixed commit message type intgrated -> integrated
- added maximum and description to maxim,iset-property
- dropped unused labels and pinctrl in bindings example
- put the compatible first in the bindings example and dts
- removed brackets around defines
- removed the leftover pdata struct field
- removed the initial_brightness struct field
- Link to v2: https://lore.kernel.org/r/20250819-max25014-v2-0-5fd7aeb1...
Changes in v2:
- Remove leftover unused property from the bindings example
- Complete the bindings example with all properties
- Remove some double info from the maxim,iset property
- Remove platform_data header, fold its data into the max25014 struct
- Don't force defines to be unsigned
- Remove stray struct max25014 declaration
- Remove chipname and device from the max25014 struct
- Inline the max25014_backlight_register() and strings_mask() functions
- Remove CONFIG_OF ifdef
- Link to v1: https://lore.kernel.org/r/20250725-max25014-v1-0-0e8cce92...
---
Maud Spierings (4):
dt-bindings: backlight: Add max25014 bindings
backlight: add max25014atg backlight
arm64: dts: freescale: moduline-display-av101hdt-a10: add backlight
arm64: dts: freescale: moduline-display-av123z7m-n17: add backlight
.../bindings/leds/backlight/maxim,max25014.yaml | 109 ++++++
MAINTAINERS | 6 +
...x8p-ml81-moduline-display-106-av101hdt-a10.dtso | 32 ++
...x8p-ml81-moduline-display-106-av123z7m-n17.dtso | 27 +-
drivers/video/backlight/Kconfig | 7 +
drivers/video/backlight/Makefile | 1 +
drivers/video/backlight/max25014.c | 409 +++++++++++++++++++++
7 files changed, 590 insertions(+), 1 deletion(-)
---
base-commit: 7c3ba4249a3604477ea9c077e10089ba7ddcaa03
change-id: 20250626-max25014-4207591e1af5
Best regards,
--
Maud Spierings <maudspierings@gocontroll.com>
