Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

gpio.4: Mention new sifive_gpio driver

Suggested by: mhorne
MFC after: 1 week

MFHead @349476

Sponsored by: The FreeBSD Foundation

gpiobus: provide a new hint, pin_list

"pin_list" allows to specify child pins as a list of pin numbers.
Existing hint "pins" serves the same purpose but with a 32-bit wide bit
mask. One problem wit

gpiobus: provide a new hint, pin_list

"pin_list" allows to specify child pins as a list of pin numbers.
Existing hint "pins" serves the same purpose but with a 32-bit wide bit
mask. One problem with that is that a controller can have more than 32
pins. One example is amdgpio. Also, a list of numbers is a little bit
more human friendly than a matching bit mask. As a side note, it seems
that in FDT pins are typically specified by their numbers as well.

This commit also adds accessors for instance variables (IVARs) that
define the child pins. My primary goal is to allow a child to be
configured programmatically rather than via hints (assuming that FDT is
not supported on a platform). Also, while a child should not care about
specific pin numbers that are allocated to it, it could be interested in
how many were actually assigned to it.

While there, I removed "flags" instance variable. It was unused.

Reviewed by: mizhka
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D20459

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gpio.4: document device hints common to all devices on gpiobus

"at" keyword is documented in device.hints(5) for all buses, but it does
hurt to add another reference to it.
"pins" keyword is specifi

gpio.4: document device hints common to all devices on gpiobus

"at" keyword is documented in device.hints(5) for all buses, but it does
hurt to add another reference to it.
"pins" keyword is specific to gpiobus.
At least these two hints should be configured for any gpiobus device on
a hints based system.

MFC after: 10 days

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IFC @r269962

Submitted by: Anish Gupta (akgupt3@gmail.com)

Merge head from 7/28

Sync to HEAD@r269943.

use .Mt to mark up email addresses consistently (final part)

PR: 191174
Submitted by: Franco Fichtner <franco at lastsummer.de>

MFC @ r266724

An SVM update will follow this.

Merge head

IFC @264767

Merge head up to r263906.

MFH: tracking commit

Sponsored by: The FreeBSD Foundation

Spelling, grammar and mdoc cleanup.

MFC after: 1 week

MFC @ r259205 in preparation for some SVM updates. (for real this time)

Merge head up to r258343.

Adds gpioiic.4 and gpioled.4 man pages. Moves some of the information that
was previously available on gpio.4 to their respectives pages. Add the
cross references on gpioctl.8.

Approved by: adrian

Adds gpioiic.4 and gpioled.4 man pages. Moves some of the information that
was previously available on gpio.4 to their respectives pages. Add the
cross references on gpioctl.8.

Approved by: adrian (mentor)

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Merge head r233826 through r256722.

Merge head@256284

IFC @256277

Approved by: ken (mentor)

MFC - tracking update.

IFC @ r255692

Comment out IA32_MISC_ENABLE MSR access - this doesn't exist on AMD.
Need to sort out how arch-specific MSRs will be handled.

Correct my inability to do math and provide a GOOD example.

Approved by: re (implicit)

Add gpio(4) man page to attempt to document the current hints based setup of
pin outputs, functions and setup.

Add cross reference in gpioctl(8) for people to find.

This is by no means complete and

Add gpio(4) man page to attempt to document the current hints based setup of
pin outputs, functions and setup.

Add cross reference in gpioctl(8) for people to find.

This is by no means complete and really only covers gpioled(4) and the
Atheros based systems who expose a few extra hints at boot time.

This should be updated by developers who know more about this system than
I and viewed as the beginning of documentation, not the end.

Reviewed by: adrian
Approved by: re (joel)
MFC after: 2 weeks

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