riscv: enable cpufreq_dt driver

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 on

riscv: enable cpufreq_dt driver

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.

Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D48124

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regulator: Move regulator code in dev/regulator

We've removed kernel option EXT_RESOURCES almost two years ago.
While it was ok to have some code under a common 'extres' subdirectory
at first, we no

regulator: Move regulator code in dev/regulator

We've removed kernel option EXT_RESOURCES almost two years ago.
While it was ok to have some code under a common 'extres' subdirectory
at first, we now have a lot of consumer of it and we made it mandatory
so no need to have it under a cryptic name.

Reviewed by: emaste, imp
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D43194

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clk: Move clock code in dev/clk

We've removed kernel option EXT_RESOURCES almost two years ago.
While it was ok to have some code under a common 'extres' subdirectory
at first, we now have a lot of

clk: Move clock code in dev/clk

We've removed kernel option EXT_RESOURCES almost two years ago.
While it was ok to have some code under a common 'extres' subdirectory
at first, we now have a lot of consumer of it and we made it mandatory
so no need to have it under a cryptic name.

Reviewed by: mhorne
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D43191

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sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remov

sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by: Netflix

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cpufreq_dt: Find the closest frequency

When building the frequencies table we convert the value in the DTS to
megahertz and loose precision. While it's not a problem for most of the
DTS it is when t

cpufreq_dt: Find the closest frequency

When building the frequencies table we convert the value in the DTS to
megahertz and loose precision. While it's not a problem for most of the
DTS it is when the expected frequency value is strict down to the hertz.
So it's either we don't truncate the value and have some ugly and long
values in the sysctls or we just find the closest frequency.
Do the latter.

Reviewed by: mmel
Differential Revision: https://reviews.freebsd.org/D41762
Sponsored by: Beckhoff Automation GmbH & Co. KG

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sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

cpufreq: Remove unused devclass arguments to DRIVER_MODULE.

cpufreq: dt: Plug set but not used variable

Sponsored by: Beckhoff Automation GmbH & Co. KG

cpufreq: Support operating-mode-v2 tables with no voltages

Summary:

The linux device tree documentation for this states that
for v1 voltages are required, but for v2 voltages are optional.

So, han

cpufreq: Support operating-mode-v2 tables with no voltages

Summary:

The linux device tree documentation for this states that
for v1 voltages are required, but for v2 voltages are optional.

So, handle that here - if there's no regulator/supply provided
for a v1 opmode then error out; but keep it optional for v2.
Then just don't both doing any regulator calls if it's not configured.

This isn't the best/final solution - mmel@ has suggested that
this should be flipped around a bit and print warnings if
we get an opp-microvolt property but we don't have a regulator.

Subscribers: imp
Reviewed by: mmel, jrtc27, manu

Test Plan: * IPQ4018, with no voltage tables; the freq set is called appropriately.

Differential Revision: https://reviews.freebsd.org/D33140

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Make CPU children explicitly share parent unit numbers.

Before this device unit number match was coincidental and broke if I
disabled some CPU device(s). Aside of cosmetics, for some drivers
(may b

Make CPU children explicitly share parent unit numbers.

Before this device unit number match was coincidental and broke if I
disabled some CPU device(s). Aside of cosmetics, for some drivers
(may be considered broken) it caused talking to wrong CPUs.

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cpufreq: clean up empty lines in .c and .h files

coufreq_dt: Rename DEBUG to DPRINTF

DEBUG is a kernel configuration flag and if used cpufreq_dt.c will fail the
build of kernel.

PR: 246867
Submitted by: Oskar Holmund (oskar.holmlund@ohdata.se)
M

coufreq_dt: Rename DEBUG to DPRINTF

DEBUG is a kernel configuration flag and if used cpufreq_dt.c will fail the
build of kernel.

PR: 246867
Submitted by: Oskar Holmund (oskar.holmlund@ohdata.se)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D25080

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Merge ^/head r358731 through r358831.

cpufreq: Unbreak build.

cpufreq_dt: Fix r358555

Before skipping the current cpu when trying to find the ones that
have the same opp, record that this one have this opp.

Reported by: mmel
MFC after: 2 weeks
X-MFC-With: r35

cpufreq_dt: Fix r358555

Before skipping the current cpu when trying to find the ones that
have the same opp, record that this one have this opp.

Reported by: mmel
MFC after: 2 weeks
X-MFC-With: r358555

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Merge ^/head r358466 through r358677.

cpufreq_dt: Improve multiple opp support

When looking for cpu with the same OPP starts from the root /cpus node
so each instance of cpufreq_dt will now each cpu with the same operating
point.
Also t

cpufreq_dt: Improve multiple opp support

When looking for cpu with the same OPP starts from the root /cpus node
so each instance of cpufreq_dt will now each cpu with the same operating
point.
Also test that the node we are testing have the property "device_type" set
to be equal to "cpu".
While here add more debug printfs (off by defaults).

MFC after: 2 weeks

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cpufreq_dt: Do not fetch again hw.ncpu

MD code already set the global variable mp_ncpus according to
the tunable hw.ncpu so use the global variable directly.

Reported by: ian

cpufreq_dt: Do not attach the device if the cpu isn't present

If we boot with hw.ncpu=X (available on arm and arm64 at least) we
shouldn't attach the cpufreq driver as cf_set_method will try to get

cpufreq_dt: Do not attach the device if the cpu isn't present

If we boot with hw.ncpu=X (available on arm and arm64 at least) we
shouldn't attach the cpufreq driver as cf_set_method will try to get
the cpuid and it doesn't exists.
This solves cpufreq panicing on RockChip RK3399 when booting with
hw.ncpu=4

MFC after: 1 week

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Remove "all rights reserved" from copyright for the file I own.
Some of the files have both me and Jared McNeill and he gave me
permission to remove it from his files too.

MFHead @345353

Improve cpufreq_dt.
- older DT can use 'cpu0-supply' property for power supply binding.
- don't expect that actual CPU frequency is contained in CPU
operational point table, but read current CPU

Improve cpufreq_dt.
- older DT can use 'cpu0-supply' property for power supply binding.
- don't expect that actual CPU frequency is contained in CPU
operational point table, but read current CPU voltage directly from
reguator. Typically, u-boot can set starting CPU frequency to any
value.

MFC after: 2 weeks

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cpufreq_dt: Add operating-points-v2 support

Oppv2 add more flexibility on regulator value for the core voltage amongst
other new thing.
For now only shared opp table is supported as I don't have har

cpufreq_dt: Add operating-points-v2 support

Oppv2 add more flexibility on regulator value for the core voltage amongst
other new thing.
For now only shared opp table is supported as I don't have hardware with
non-shared opp table.

Tested-On: OrangePi One (with oppv1 and oppv2)
Tested-On: Pine64-LTS

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Align OF_getencprop_alloc API with OF_getencprop and OF_getprop_alloc

Change OF_getencprop_alloc semantics to be combination of malloc and
OF_getencprop and return size of the property, not number o

Align OF_getencprop_alloc API with OF_getencprop and OF_getprop_alloc

Change OF_getencprop_alloc semantics to be combination of malloc and
OF_getencprop and return size of the property, not number of elements
allocated.

For the use cases where number of elements is preferred introduce
OF_getencprop_alloc_multi helper function that copies semantics
of OF_getencprop_alloc prior to this change.

This is to make OF_getencprop_alloc and OF_getencprop_alloc_multi
function signatures consistent with OF_getencprop_alloc and
OF_getencprop_alloc_multi.

Functionality-wise this patch is mostly rename of OF_getencprop_alloc
to OF_getencprop_alloc_multi except two calls in ofw_bus_setup_iinfo
where 1 was used as a block size.

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