- Add a SPDX header; - Add a document title, based on the original contents of cpu-freq/index.txt; - some whitespace fixes and new line breaks; - Add it to cpu-freq/index.rst. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx> --- .../cpu-freq/{amd-powernow.txt => amd-powernow.rst} | 12 ++++++++++-- Documentation/cpu-freq/index.rst | 2 ++ 2 files changed, 12 insertions(+), 2 deletions(-) rename Documentation/cpu-freq/{amd-powernow.txt => amd-powernow.rst} (89%) diff --git a/Documentation/cpu-freq/amd-powernow.txt b/Documentation/cpu-freq/amd-powernow.rst similarity index 89% rename from Documentation/cpu-freq/amd-powernow.txt rename to Documentation/cpu-freq/amd-powernow.rst index 254da155fa47..4a53612b62a2 100644 --- a/Documentation/cpu-freq/amd-powernow.txt +++ b/Documentation/cpu-freq/amd-powernow.rst @@ -1,3 +1,9 @@ +.. SPDX-License-Identifier: GPL-2.0 + +============================= +AMD PowerNow Driver Specifics +============================= + PowerNow! and Cool'n'Quiet are AMD names for frequency management capabilities in AMD processors. As the hardware @@ -23,16 +29,18 @@ not supply these tables. 7th Generation: powernow-k7: Athlon, Duron, Geode. 8th Generation: powernow-k8: Athlon, Athlon 64, Opteron, Sempron. + Documentation on this functionality in 8th generation processors is available in the "BIOS and Kernel Developer's Guide", publication -26094, in chapter 9, available for download from www.amd.com. +26094, in chapter 9, available for download from www.amd.com. BIOS supplied data, for powernow-k7 and for powernow-k8, may be from either the PSB table or from ACPI objects. The ACPI support is only available if the kernel config sets CONFIG_ACPI_PROCESSOR. The powernow-k8 driver will attempt to use ACPI if so configured, and fall back to PST if that fails. + The powernow-k7 driver will try to use the PSB support first, and fall back to ACPI if the PSB support fails. A module parameter, -acpi_force, is provided to force ACPI support to be used instead +acpi_force, is provided to force ACPI support to be used instead of PSB support. diff --git a/Documentation/cpu-freq/index.rst b/Documentation/cpu-freq/index.rst index 1bff3dfddd23..6f7c2a024447 100644 --- a/Documentation/cpu-freq/index.rst +++ b/Documentation/cpu-freq/index.rst @@ -14,6 +14,8 @@ Author: Dominik Brodowski <linux@xxxxxxxx> .. toctree:: :maxdepth: 1 + amd-powernow + Mailing List ------------ There is a CPU frequency changing CVS commit and general list where -- 2.24.1