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Differential D48124

riscv: enable cpufreq_dt driver
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Authored by mhorne on Dec 17 2024, 8:10 PM.
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Details

Reviewers
andrew
Group Reviewers
riscv
Commits
rGe6a2ee407207: cpufreq_dt: fix attach for single CPU
rGdef7999c2ccd: riscv: enable cpufreq_dt driver
Summary

Implement the small amount of MD code required; copied from arm/arm64.

One tweak is made to cpufreq_dt itself: if the opp-shared property is
missing, but there is only one CPU, then we can still attach. This is
relevant for the single-core Allwinner D1.

Test Plan

Tested on the Allwinner D1 and VisionFive v2 (JH7110) SBCs.

CPUs can have their frequency toggled via sysctl, or powerd -a max. I did not verify the effects, but all the machinery appears to be working.

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Skipped
Unit
Tests Skipped
Build Status
Buildable 61221
Build 58105: arc lint + arc unit

Revision Contents
Changeset List

PathSize
sys/
conf/
1 line
dev/
cpufreq/
2 lines
riscv/
conf/
3 lines
include/
3 lines
riscv/
12 lines

Diff 148176

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sys/conf/files.riscv

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sys/dev/cpufreq/cpufreq_dt.c

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sys/riscv/conf/GENERIC

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sys/riscv/include/pcpu.h

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sys/riscv/riscv/machdep.c

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