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bb64206276
Add support for optional GPIO-based enable pin control to PWM LED driver. Some PWM LED driver chips like TPS92380 and LT3743 require a separate enable signal in addition to PWM control. Implement support for such GPIO control through the "enable-gpios" device tree property, activating the pin when LED brightness is non-zero and deactivating it when off. Tested on i.MX8MP EVK with TPS92380 LED driver chip Signed-off-by: LI Qingwu <Qing-wu.Li@leica-geosystems.com.cn> Link: https://patch.msgid.link/20251117054511.730246-2-Qing-wu.Li@leica-geosystems.com.cn Signed-off-by: Lee Jones <lee@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.