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Currently the TIMER_BASE_CONFIG0 register gets initialized to a fixed value as initially found in vendor driver code supporting the RK3588 SoC. As a matter of fact the value matches the rate of the HDMI TX reference clock, which is roughly 428.57 MHz. However, on RK3576 SoC that rate is slightly lower, i.e. 396.00 MHz, and the incorrect register configuration breaks CEC functionality. Set the timer base according to the actual reference clock rate that shall be provided by the platform driver. Otherwise fallback to the vendor default. While at it, also drop the unnecessary empty lines in dw_hdmi_qp_init_hw(). Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com> Reviewed-by: Daniel Stone <daniels@collabora.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://lore.kernel.org/r/20250903-rk3588-hdmi-cec-v4-2-fa25163c4b08@collabora.com |
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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.