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when bit14 in module parameter ppfeaturemask was set. od feature will be enabled on Vega10 except vbios not support. user can read od range by reading sysfs pp_od_clk_voltage, cat pp_od_clk_voltage OD_SCLK: 0: 852Mhz 800mV 1: 991Mhz 900mV 2: 1138Mhz 950mV 3: 1269Mhz 1000mV 4: 1348Mhz 1050mV 5: 1399Mhz 1100mV 6: 1440Mhz 1150mV 7: 1500Mhz 1200mV OD_MCLK: 0: 167Mhz 800mV 1: 500Mhz 800mV 2: 800Mhz 950mV 3: 945Mhz 1000mV OD_RANGE: SCLK: 852MHz 2200MHz MCLK: 167MHz 1500MHz VDDC: 800mV 1200mV and can configure the clock/voltage by writing pp_od_clk_voltage for example: echo "s 0 900 820">pp_od_clk_voltage to change the sclk/vddc to 900MHz and 820 mV in dpm level0. echo "r" to change the clk/voltage to default value. echo "c">pp_od_clk_voltage to commit the change v2: squash in warning fix (Alex) Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.