On Fri, 6 Nov 2020 at 09:53, Mike Holmes via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org wrote:
All
Thanks for a good discussion yesterday, Hanjun's Unconre DVFS slides are now attached to the notes at https://collaborate.linaro.org/display/LOD/2020-11-04+Meeting+Meeting+notes
Just to make sure people know about it...
For DT based platforms we have recently enabled a generic solution in the Linux kernel to support DVFS. From a top level point of view, it consists of letting a power-domain provider act as the backend driver for changing the performance state (voltage/frequency). The mapping of what state to select, is done through OPP tables.
I am not an expert of ACPI specifications, but perhaps the DT bindings can be used as inspiration for what is missing!?
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Kind regards Ulf Hansson, Linaro KWG