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Apple's Non-Standards and Linux

Submitted by Roy Schestowitz on Sunday 16th of February 2020 11:42:13 AM Filed under

Linux 5.7 To See USB Fast Charge Support For Apple iOS Devices

The Linux 5.7 kernel that will be out in the late spring / early summer is poised to see support for USB fast charging support for Apple iOS devices.

Currently if charging an Apple iPhone / iPad from a USB port by default it will not draw more than 500mA per specifications. However, iOS devices can draw more power when communicated to do so via Apple's protocol. With Linux 5.7 a new "apple-mfi-fastcharge" driver will allow this capability of up to 2500mA.

The apple-mfi-fastcharge driver will allow setting the power supply property via sysfs to "fast" and in turn lets the iOS device draw more power from the USB port, similar to the behavior of MFi certified chargers.
Apple Firmware Update For Magic Keyboards Decides To Change The Fn Key

Linux has supported the Apple Magic Keyboards since 2018 handling the Bluetooth connectivity and also needing some special handling for the numeric keypad. While that normally would be the end of the story, recent firmware updates to the Apple Magic Keyboard have caused problems.

Newer Apple firmware updates to the Magic Keyboards have caused the function (Fn) keys to be reported differently. So on current Linux kernels when running on an Apple keyboard with updated firmware, the Fn key may not behave correctly.

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Linux to get iPhone fast charging support

Submitted by Roy Schestowitz on Saturday 22nd of February 2020 10:47:28 AM.

Linux to get iPhone fast charging support

Before the iPhone 11 Pro was released, all iPhones shipped with slow 5W chargers. However, now that the iPhone 11 Pro and the iPhone 11 Pro Max come bundled with 18W fast chargers, it makes sense to have computers support the technology as well.

To add fast charging support for iPhones, the upcoming Linux Kernel 5.7 will add support for the latest fast charging technology. To be more specific, it’s not only for iPhones but also iPads which use 24W chargers.

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Linux 5.11-rc5

So this rc looked fairly calm and small, all the way up until today.

In fact, over 40% of the non-merge commits came in today, as people
unloaded their work for the week on me. The end result is a slightly
larger than usual rc5 (but both 5.10 and 5.8 were bigger, so not some
kind of odd outlier).

Nothing particularly stands out. We had a couple of splice()
regressions that came in during the previous release as part of the
"get rid of set_fs()" development, but they were for odd cases that
most people would never notice. I think it's just that 5.10 is now
getting more widely deployed so people see the fallout from that
rather fundamental change in the last release.  And the only reason I
even reacted to those is just because I ended up being involved with
some of the tty patches during the early calm period of the past week.
There's a few more still pending.

But the bulk of it all is all the usual miscellaneous fixes all over
the place, and a lot of it is truly trivial one- or few-liners. Just
under half the patch is for drivers, with the rest being the usual mix
of tooling, arch updates, filesystem and core (mm, scheduling,
networking).

Nothing here makes me go "Uhhuh" in other words.

            Linus

Also: Linux 5.11-rc5 Kernel Released Following A Busy Sunday - Phoronix

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