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00d22e9e04
[Why] When more than 2 displays are connected to the graphics card, only the minimum memory clock is needed. However, when more displays are connected, the minimum memory clock is not sufficient enough to support the overwhelming bandwidth. System will hang under this circumstance. Also, the old code didn't address HBM cards, which has 2 pseudo channels. We need to add the HBM part here. [How] When graphics card connects to 2 or more displays, switch to high memory clock. Also, choose memory multiplier based on whether its regular DRAM or HBM. Signed-off-by: Zhan Liu <zhan.liu@amd.com> Reviewed-by: Roman Li <Roman.Li@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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.