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arm64: dts: apple: t6041-j575c: enable cpuidle - #1575
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RyanTheTide merged 1 commit intoNov 12, 2026
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Every other T604x and T8132 board enables the cpuidle node; the J575c did not, so it ran without a cpuidle driver and s2idle never reached the tick freeze. Enable it. Tested on a J575c (Mac Studio, M4 Max): apple_idle registers (two WFI states, as on the other M4 machines), and s2idle enters and resumes on the PMU RTC alarm, a USB keyboard press, and from the desktop after seven minutes, with both displays, USB, Ethernet and audio back. Signed-off-by: Roberto Dantas <7robertodantas@gmail.com> Assisted-by: LLM (Claude Code) Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Matches the other T604x boards, and the cpuidle and s2idle results cover it. Approved.
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Written with an AI assistant (Claude) on @7robertodantas's behalf; every hardware step was run and checked on the owner's J575c.
t6041-j575c: enable cpuidle
Every other T604x and T8132 board sets
&cpuidle { status = "okay"; }; the J575c (Mac Studio, M4 Max) did not, so it ran with cpuidle drivernoneand s2idle never reached the tick freeze. This enables it. Four lines, DT only.Tested on a J575c (linux-aurora 7.3.0, the live J575c DTB with
/cpuidleset tookay, first as a one-shot aura trial, then permanent):apple_idle, two WFI states (as on the other M4 machines), CPUs entering themrtcwake -d rtc1 -m freeze -s 30)suspend_statssuccessNot tested: power-button wake, many-cycle soak, sleep with Thunderbolt devices. Deep sleep (suspend-to-RAM) is out of scope: there is no T6041 provider yet (see #1445, #1477).
Once, on the trial boot, the Plasma login screen dropped letter keys (the kernel received them; restarting the greeter fixed it) after the keyboard re-enumerated. Not seen again; noted in case it recurs.
🤖 Generated with Claude Code