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HWEN is hardware control, which is used for enable/disable aw200xx chip. It's high active, internally pulled down to GND. After HWEN pin set high the chip begins to load the OTP information, which takes 200us to complete. About 200us wait time is needed for internal oscillator startup and display SRAM initialization. After display SRAM initialization, the registers in page 1 to page 5 can be configured via i2c interface. Signed-off-by: Dmitry Rokosov <ddrokosov@salutedevices.com> Link: https://lore.kernel.org/r/20231125200519.1750-3-ddrokosov@salutedevices.com 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 Restructured Text 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.