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This is supported by Sienna Cichlid, Navy Flounder and Dimgrey Cavefish. For these ASICs, the target voltage calculation can be illustrated by "voltage = voltage calculated from v/f curve + overdrive vddgfx offset". V2: limit the smu_version check for Sienna Cichlid only Here are some sample usages about this new OD setting: 1. Check current vddgfx offset setting by cat /sys/class/drm/card0/device/pp_od_clk_voltage ... ... OD_VDDGFX_OFFSET: 0mV ... ... 2. Set new vddgfx offset by echo "vo 10" > /sys/class/drm/card0/device/pp_od_clk_voltage cat /sys/class/drm/card0/device/pp_od_clk_voltage ... ... OD_VDDGFX_OFFSET: 10mV ... ... 3. Commit the new setting by echo "c" > /sys/class/drm/card0/device/pp_od_clk_voltage Signed-off-by: Evan Quan <evan.quan@amd.com> Acked-by: Alex Deucher <alexander.deucher@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.