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MFH

Sponsored by:   Rubicon Communications, LLC (netgate.com)

Merge ^/head r363583 through r363738.

Move Ti AM335x to dev/extres/clk framework.

Re-implement clocks for these SoC by using now standard extres/clk framework.
This is necessary for future expansion of these. The new  implementation
is (due to the size of the patch) only the initial (minimum) version.
It will be updated/expanded with a subsequent set of particular patches.

This patch is also not tested on OMAP4 based boards (BeagleBone),
so all possible issues should be (and will be) fixed by ASAP once
identified.

Submited by:            Oskar Holmlund (oskar.holmlund at ohdata.se)
Differential Revision:  https://reviews.freebsd.org/D25118

am335x_prcm: Delay the frequencies read check

With Linux 4.17 dts the compatible for the prcm added 'simplebus' we mean
that the simplebus driver will attach to it at the BUS_PASS_BUS pass.
Change the pass for the prcm driver to be at BUS_PASS_BUS so we will win
the attach.
This introduce a problem as this driver needs the ti_scm one to be already
attached. ti_scm also attach at BUS_PASS_BUS but after the prcm one as it is
after in the dtb and the simplebus driver simpy walk the tree to attach it's
children.
Use the bus_new_pass method to defer the frequencies read at BUS_PASS_TIMER.
This fixes booting on BeagleBone*

Reported by:    many

Revert r330897:

This was intended to be a non-functional change. It wasn't. The commit
message was thus wrong. In addition it broke arm, and merged crypto
related code.

Revert with prejudice.

This revert skips files touched in r316370 since that commit was since
MFCed. This revert also skips files that require $FreeBSD$ property
changes.

Thank you to those who helped me get out of this mess including but not
limited to gonzo, kevans, rgrimes.

Requested by: gjb (re)

Partial merge of the SPDX changes

These changes are incomplete but are making it difficult
to determine what other changes can/should be merged.

No objections from:     pfg

sys/arm: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

MFC r322373:

Ensure the clocks driver is attached before any drivers that need to enable
clocks in their attach().

MFhead at r322451

Merge ^/head r321383 through r322397.

Ensure the clocks driver is attached before any drivers that need to enable
clocks in their attach().

MFC of r305112, r305113, r305119, r305141 and r305432:

Replace magic numbers with the proper register names.

Fix the build, revert r305119, move the control module register data to
am335x_scm.h and fix if_cpsw.c to include the correct header.

Sponsored by:   Rubicon Communications, LLC (Netgate)

Merge ^/head r308491 through r308841.

Stop including fdt_common.h from the arm code when it's unneeded.

Sponsored by:   ABT Systems Ltd

Merge ^/head r305087 through r305219.

MFhead @ r305170

Fix the build.

Works better when the file with the #define is actually included...

Replace a magic number with the proper register name.

Sponsored by:   Rubicon Communications, LLC (Netgate)

MFH

Sponsored by:   The FreeBSD Foundation

Add the SPI driver for am335x.

This driver works in PIO mode for now, interrupts are available only when
FIFO is enabled.  The FIFO cannot be used with arbitrary sizes which defeat
its general use.

At some point we can add DMA transfers where the FIFO can be more useful.

Tested on uBMC (microBMC) and BBB.

Sponsored by:   Rubicon Communications (Netgate)

Merge from head

Sponsored by:   Gandi.net

Finish merging from head, messed up in previous attempt

Merge from HEAD

Catch up with head, primarily for the 1.14.4.0 firmware.

Merge ^/head r286685 through r286693.

Add a MODULE_VERSION(), because other things MODULE_DEPEND() on this.

Catch up with HEAD (r280229-r284686).

Merge ^/head r284188 through r284643.

Merge from head @274131

- Add clk_set_source_freq field to struct ti_clock_dev so clock device
   consumers can configure clock frequency
- Add ti_prcm_clk_set_source_freq wrapper for clk_set_source_freq
- Add am335x_clk_set_arm_disp_freq function to control pixel clock
   frequency for LCD and HDMI output. Both of them are sensitive
   to frequency skews and we need to get pixel clock matching requested
   frequency as close to possible