Pull ARM updates from Russell King:
- add arch/arm/Kbuild from Masahiro Yamada.
- simplify act_mm macro, since it contains an open-coded
get_thread_info.
- VFP updates for Clang from Stefan Agner.
- Fix unwinder for Clang from Nathan Huckleberry.
- Remove unused it8152 PCI host controller, used by the removed cm-x2xx
platforms from Mike Rapoport.
- Further explanation of __range_ok().
- Remove kimage_voffset that isn't used anymore from Marc Zyngier.
- Drop ancient Thumb-2 workaround for old binutils from Ard Biesheuvel.
- Documentation cleanup for mach-* from Pete Zaitcev.
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8996/1: Documentation/Clean up the description of mach-<class>
ARM: 8995/1: drop Thumb-2 workaround for ancient binutils
ARM: 8994/1: mm: drop kimage_voffset which was only used by KVM
ARM: uaccess: add further explanation of __range_ok()
ARM: 8993/1: remove it8152 PCI controller driver
ARM: 8992/1: Fix unwind_frame for clang-built kernels
ARM: 8991/1: use VFP assembler mnemonics if available
ARM: 8990/1: use VFP assembler mnemonics in register load/store macros
ARM: 8989/1: use .fpu assembler directives instead of assembler arguments
ARM: 8982/1: mm: Simplify act_mm macro
ARM: 8981/1: add arch/arm/Kbuild
Polish the description of machine classes a little bit,
remove the duplicate directory name, so the reader does
not feel compelled to dig through the output of "git blame".
Signed-off-by: Pete Zaitcev <zaitcev@yahoo.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
This file only requires a properly-formatted title to be
recognized as a ReST file.
As there will be more files under bindings/ that will be
included at the documentation body, add a new index.rst
file there.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
It seems a UTF-8 byte order mark (the least useful kind of BOM...) snuck
into the file and broke Sphinx's detection of the title line.
Besides making arm/samsung-s3c24xx/index.html look a little better, this
patch also confines the non-index pages in arm/samsung-s3c24xx to their
own table of contents.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The support for the following boards, among others, was removed in 2004
with commit "[ARM] Remove broken SA1100 machine support.":
- ADS Bitsy
- Brutus
- Freebird
- ADS GraphicsClient Plus
- ADS GraphicsMaster
- Höft & Wessel Webpanel
- Compaq Itsy
- nanoEngine
- Pangolin
- PLEB
- Yopy
Tifon support has been removed in 2.4.3.3.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This directory is empty, except for a .gitignore file, listing an
executable file that can no longer be built since commit
c6535e1e03 ("Documentation: Remove ZBOOT MMC/SDHI utility and
docs").
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Add an extra blank line, as otherwise XeLaTex will complain with:
! LaTeX Error: Too deeply nested.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
All those new files I added are under GPL v2.0 license.
Add the corresponding SPDX headers to them.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Now that several arch documents were converted to ReST,
add their indexes to Documentation/index.rst and remove the
:orphan: from them.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Converts ARM the text files to ReST, preparing them to be an
architecture book.
The conversion is actually:
- add blank lines and identation in order to identify paragraphs;
- fix tables markups;
- add some lists markups;
- mark literal blocks;
- adjust title markups.
At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Reviewed-by Corentin Labbe <clabbe.montjoie@gmail.com> # For sun4i-ss
Sphinx doesn't like orphan documents:
Documentation/accelerators/ocxl.rst: WARNING: document isn't included in any toctree
Documentation/arm/stm32/overview.rst: WARNING: document isn't included in any toctree
Documentation/arm/stm32/stm32f429-overview.rst: WARNING: document isn't included in any toctree
Documentation/arm/stm32/stm32f746-overview.rst: WARNING: document isn't included in any toctree
Documentation/arm/stm32/stm32f769-overview.rst: WARNING: document isn't included in any toctree
Documentation/arm/stm32/stm32h743-overview.rst: WARNING: document isn't included in any toctree
Documentation/arm/stm32/stm32mp157-overview.rst: WARNING: document isn't included in any toctree
Documentation/gpu/msm-crash-dump.rst: WARNING: document isn't included in any toctree
Documentation/interconnect/interconnect.rst: WARNING: document isn't included in any toctree
Documentation/laptops/lg-laptop.rst: WARNING: document isn't included in any toctree
Documentation/powerpc/isa-versions.rst: WARNING: document isn't included in any toctree
Documentation/virtual/kvm/amd-memory-encryption.rst: WARNING: document isn't included in any toctree
Documentation/virtual/kvm/vcpu-requests.rst: WARNING: document isn't included in any toctree
So, while they aren't on any toctree, add :orphan: to them, in order
to silent this warning.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
While building arm32 allyesconfig, I ran into the following errors:
arch/arm/lib/xor-neon.c:17:2: error: You should compile this file with
'-mfloat-abi=softfp -mfpu=neon'
In file included from lib/raid6/neon1.c:27:
/home/nathan/cbl/prebuilt/lib/clang/8.0.0/include/arm_neon.h:28:2:
error: "NEON support not enabled"
Building V=1 showed NEON_FLAGS getting passed along to Clang but
__ARM_NEON__ was not getting defined. Ultimately, it boils down to Clang
only defining __ARM_NEON__ when targeting armv7, rather than armv6k,
which is the '-march' value for allyesconfig.
>From lib/Basic/Targets/ARM.cpp in the Clang source:
// This only gets set when Neon instructions are actually available, unlike
// the VFP define, hence the soft float and arch check. This is subtly
// different from gcc, we follow the intent which was that it should be set
// when Neon instructions are actually available.
if ((FPU & NeonFPU) && !SoftFloat && ArchVersion >= 7) {
Builder.defineMacro("__ARM_NEON", "1");
Builder.defineMacro("__ARM_NEON__");
// current AArch32 NEON implementations do not support double-precision
// floating-point even when it is present in VFP.
Builder.defineMacro("__ARM_NEON_FP",
"0x" + Twine::utohexstr(HW_FP & ~HW_FP_DP));
}
Ard Biesheuvel recommended explicitly adding '-march=armv7-a' at the
beginning of the NEON_FLAGS definitions so that __ARM_NEON__ always gets
definined by Clang. This doesn't functionally change anything because
that code will only run where NEON is supported, which is implicitly
armv7.
Link: https://github.com/ClangBuiltLinux/linux/issues/287
Suggested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Whilst making an unrelated change to some Documentation, Linus sayeth:
| Afaik, even in Britain, "whilst" is unusual and considered more
| formal, and "while" is the common word.
|
| [...]
|
| Can we just admit that we work with computers, and we don't need to
| use þe eald Englisc spelling of words that most of the world never
| uses?
dictionary.com refers to the word as "Chiefly British", which is
probably an undesirable attribute for technical documentation.
Replace all occurrences under Documentation/ with "while".
Cc: David Howells <dhowells@redhat.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michael Halcrow <mhalcrow@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Pull ARM SoC device tree updates from Arnd Bergmann:
"There are close to 800 indivudal changesets in this branch again,
which feels like a lot. There are particularly many changes for the
NVIDIA Tegra platform this time, in fact more than it has seen in the
two years since the v4.9 merge window. Aside from this, it's been
fairly normal, with lots of changes going into Renesas R-CAR, NXP
i.MX, Allwinner Sunxi, Samsung Exynos, and TI OMAP.
Most of the changes are for adding new features into existing boards,
for brevity I'm only mentioning completely new machines and SoCs here.
For the first time I think we have (slightly) more new 64-bit hardware
than 32-bit:
Two boards get added for TI OMAP: Moxa UC-2101 is an industrial
computer, see https://www.moxa.com/product/UC-2100.htm; GTA04A5 is a
minor variation of the motherboards of the GTA04 phone, see
https://shop.goldelico.com/wiki.php?page=GTA04A5
Clearfog is a nice little board for quad-core Marvell Armada 8040
network processor, see
https://www.solid-run.com/marvell-armada-family/clearfog-gt-8k/
Two additional server boards come with the Aspeed baseboard management
controllers: Stardragon4800 is an arm64 reference platform made by HXT
(based on Qualcomm's server chips), and TiogaPass is an Open Compute
mainboard with x86 CPUs. Both use the ARM11 based AST2500 chips in the
BMC.
NXP i.MX usually sees a lot of new boards each release. This time
there we only add one minor variant: ConnectCore 6UL SBC Pro uses the
same SoM design as the ConnectCore 6UL SBC Express added later.
However, there is a new chip, the i.MX6ULZ, which is an even smaller
variant of the i.MX6ULL, with features removed. There is also support
for the reference board design, the i.MX6ULZ 14x14 EVK.
A new Raspberry Pi variant gets added, this one is the CM3 compute
module based on bcm2837, it was launched in early 2017 but only now
added to the kernel, both as 32-bit and as 64-bit files, as we tend to
do for Raspberry Pi.
On the Allwinner side, everything is again about cheap development
boards, usually of the "Fruit Pi" variety. The new ones this time are:
- Orange Pi Zero Plus2: http://www.orangepi.org/OrangePiZeroPlus2/
- Orange Pi One Plus: http://www.orangepi.org/OrangePiOneplus/
- Pine64 LTS: https://www.pine64.org/?product=pine-a64-lts
- Banana Pi M2+ H5: http://www.banana-pi.org/m2plus.html
The last one of these is now a 64-bit version of the earlier Banana Pi
M2+ H3, with the same board layout.
Similarly, for Rockchips, get get another variant of the 32-bit Asus
Tinker board, the model 'S' based on rk3288, and three now boards
based on the popular RK3399 chip:
- ROC-RK3399-PC: https://libre.computer/products/boards/roc-rk3399-pc/
- Rock960: https://www.96boards.org/product/rock960/
- RockPro64: https://www.pine64.org/?page_id=61454
These are all quite powerful boards with lots of RAM and I/O, and the
RK3399 is the same chip used in several Chromebooks. Finally, we get
support for the PX30 (aka rk3326) chip, which is based on the low-end
64-bit Cortex-A35 CPU core. So far, only the evaluation board is
supported.
One more Banana Pi is added with a Mediatek chip: Banana Pi R64 is
based on the MT7622 WiFi router platform, and the first product I've
seen with a 64-bit Mediatek chip in that market:
http://www.banana-pi.org/r64.html
For HiSilicon, we gain support for the Hi3670 SoC and HiKey 370
development board, which are similar to the Hi3660 and Hikey 360
respectively, but add support for an NPU.
Amlogic gets initial support for the Meson-G12A chip (S905D2), another
quad-core Cortex-A53 SoC, and its evaluation platform. On the 32-bit
side, we gain support for an actual end-user product, the Endless
Computers Endless Mini based on Meson8b (S805), see
https://endlessos.com/computers/
Qualcomm adds support for their MSM8998 SoC and evaluation platform.
This chip is commonly known as the Snapdragon 835, and is used in
high-end phones as well as low-end laptops.
For Renesas, a very bare support for the r8a774a1 (RZ/G2M) is added,
but no boards for this one. However, we do add boards for the
previously added r8a77965 (R-Car M3-N): the M3NULCB Kingfisher and the
M3NULCB Starter Kit Pro.
While we have lots of DT changes for NVIDIA to update the existing
files, the only board that gets added is the Toradex Colibri T20 on
Colibri Evaluation Board for the old Tegra2.
Synaptics add support for their AS370 SoC, which is part of the
(formerly Marvell) Berlin line of set-top-box chips used e.g. in the
various Google Chromecast. Only the .dtsi gets added at this point, no
actual machines"
* tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (721 commits)
ARM: dts: socfgpa: remove ethernet aliases from dtsi
arm64: dts: stratix10: add ethernet aliases
dt-bindings: mediatek: Add bindig for MT7623 IOMMU and SMI
dt-bindings: mediatek: Add JPEG Decoder binding for MT7623
dt-bindings: iommu: mediatek: Add binding for MT7623
dt-bindings: clock: mediatek: add support for MT7623
ARM: dts: mvebu: armada-385-db-88f6820-amc: auto-detect nand ECC properites
ARM: dts: da850-lego-ev3: slow down A/DC as much as possible
ARM: dts: da850-evm: Enable tca6416 on baseboard
arm64: dts: uniphier: Add USB2 PHY nodes
arm64: dts: uniphier: Add USB3 controller nodes
ARM: dts: uniphier: Add USB2 PHY nodes
ARM: dts: uniphier: Add USB3 controller nodes
arm64: dts: meson-axg: s400: disable emmc
arm64: dts: meson-axg: s400: add missing emmc pwrseq
arm64: dts: clearfog-gt-8k: add PCIe slot description
ARM: dts: at91: sama5d4_xplained: even nand memory partitions
ARM: dts: at91: sama5d3_xplained: even nand memory partitions
ARM: dts: at91: at91sam9x5cm: even nand memory partitions
ARM: dts: at91: sama5d2_ptc_ek: fix bootloader env offsets
...
This is a respin with a wider audience (all that get_maintainer returned)
and I know this spams a *lot* of people. Not sure what would be the correct
way, so my apologies for ruining your inbox.
The 00-INDEX files are supposed to give a summary of all files present
in a directory, but these files are horribly out of date and their
usefulness is brought into question. Often a simple "ls" would reveal
the same information as the filenames are generally quite descriptive as
a short introduction to what the file covers (it should not surprise
anyone what Documentation/sched/sched-design-CFS.txt covers)
A few years back it was mentioned that these files were no longer really
needed, and they have since then grown further out of date, so perhaps
it is time to just throw them out.
A short status yields the following _outdated_ 00-INDEX files, first
counter is files listed in 00-INDEX but missing in the directory, last
is files present but not listed in 00-INDEX.
List of outdated 00-INDEX:
Documentation: (4/10)
Documentation/sysctl: (0/1)
Documentation/timers: (1/0)
Documentation/blockdev: (3/1)
Documentation/w1/slaves: (0/1)
Documentation/locking: (0/1)
Documentation/devicetree: (0/5)
Documentation/power: (1/1)
Documentation/powerpc: (0/5)
Documentation/arm: (1/0)
Documentation/x86: (0/9)
Documentation/x86/x86_64: (1/1)
Documentation/scsi: (4/4)
Documentation/filesystems: (2/9)
Documentation/filesystems/nfs: (0/2)
Documentation/cgroup-v1: (0/2)
Documentation/kbuild: (0/4)
Documentation/spi: (1/0)
Documentation/virtual/kvm: (1/0)
Documentation/scheduler: (0/2)
Documentation/fb: (0/1)
Documentation/block: (0/1)
Documentation/networking: (6/37)
Documentation/vm: (1/3)
Then there are 364 subdirectories in Documentation/ with several files that
are missing 00-INDEX alltogether (and another 120 with a single file and no
00-INDEX).
I don't really have an opinion to whether or not we /should/ have 00-INDEX,
but the above 00-INDEX should either be removed or be kept up to date. If
we should keep the files, I can try to keep them updated, but I rather not
if we just want to delete them anyway.
As a starting point, remove all index-files and references to 00-INDEX and
see where the discussion is going.
Signed-off-by: Henrik Austad <henrik@austad.us>
Acked-by: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Just-do-it-by: Steven Rostedt <rostedt@goodmis.org>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Paul Moore <paul@paul-moore.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: [Almost everybody else]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Suspend to RAM on Odroid XU3/XU4/HC1 family (Exynos5422) causes
imprecise abort:
PM: Syncing filesystems ... done.
Freezing user space processes ... (elapsed 0.003 seconds) done.
OOM killer disabled.
Freezing remaining freezable tasks ... (elapsed 0.003 seconds) done.
wake enabled for irq 139
Disabling non-boot CPUs ...
IRQ51 no longer affine to CPU1
IRQ52 no longer affine to CPU2
IRQ53 no longer affine to CPU3
IRQ54 no longer affine to CPU4
IRQ55 no longer affine to CPU5
IRQ56 no longer affine to CPU6
cpu cpu4: Dropping the link to regulator.40
IRQ57 no longer affine to CPU7
Unhandled fault: external abort on non-linefetch (0x1008) at 0xf081a028
Internal error: : 1008 [#1] PREEMPT SMP ARM
with last call trace in exynos_suspend_enter().
The abort is caused by writing to register in secure part of sysram.
Boards booted under secure firmware (e.g. Hardkernel Odroid boards)
should access non-secure sysram.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Pull ARM SoC device tree updates from Olof Johansson:
"As always, a large number of DT updates. Too many to enumerate them
all, but at a glance:
New SoCs introduced in this release:
- Amlogic:
+ Meson 8M2 SoC, a.k.a. S812. A quad Cortex-A9 SoC used in some
set top boxes and other products.
- Mediatek:
+ MT7623A, which is a flavor of the MT7623 family with other
on-chip ethernet options.
- Qualcomm:
+ SDM845, a.k.a Snapdragon 845, an 4+4-core Kryo 385/845
(Cortex-A75/A55 derivative) SoC that's one of the current
high-end mobile SoCs.
It's great to see mainline support for it. So far, you can't do
much with it, since a lot of peripherals are not yet in the DTs
but driver support for USB, GPU and other pieces are starting to
trickle in. This might end up being a well-supported SoC
upstream if the momentum keeps up.
- Renesas:
+ R8A77990, a.k.a R-Car E3, a new automotive
entertainment-targeted SoC. Currently only one Cortex-A53 CPU is
enabled, we are eagerly awaiting more. So far, basic drivers
such as serial, gpios, PMU and ethernet are enabled.
+ R8A77470, a.k.a. RZ/G1C, a new dual Cortex-A7 SoC with PowerVR
GPU. Same here, basic set of drivers such as serial, gpios and
ethernet enabled, and SMP support is also forthcoming.
- STMicroelectronics:
+ STM32F469, very similar tih STM32F429 but with display support
Enhancements to SoCs/platforms (DTS contents, some driver portions
might not be in yet):
- Allwinner sun8i (h3/a33/a83t) SMP, DVFS tweaks, misc
- Amlogic Meson: I2C, UFS, TDM, GPIO external interrupts, MMC resets
- Hisilicon hi3660: Thermal cooling, CPU frequency scaling, mailbox interfaces
- Marvell Berlin2CD: SMP support, thermal sensors
- Mediatek MT7623: Highspeed DMA, audio support
- Qualcomm IPQ8074 PCIe support, MSM8996 UFS support
- Renesas: Watchdog and PMU support across many platforms
- Rockchip RK3399: USB3 OTG support
- Samsung Exynos: Audio-over-HDMI on Odroid X/X2/U3
- STMicro STM32: Lots of peripherals added to STM32MP175C
- Uniphier: Ethernet support
New boards:
- Allwinner A20: Olimex A20-SOM-EVB-eMMC variant
- Allwinner H2+: Libre Computer ALL-H3-CC (h2+ version)
- Allwinner A33: Nintendo NES/SuperNES Classic Edition
- Aspeed: S2600WF, Inventec Lanyang BMC, Portwell Neptune
- Berlin2CD: Valve Steam Link
- Broadcom BCM5301X: Luxul XAP-1610 and XWR-3150 V1
- Broadcom: Raspberry Pi 3 B+
- Mediatek MT7623N and MT7623A: reference boards
- Meson 8M2: Tronsmart MXIII Plus
- NXP i.MX: Engicam i.CoreM6, DHCOM iMX6 SOM, BTicino i.MX6DL Mamoj
- Qualcomm MSM8974: Sony Xperia Z1 Compact support
- Qualcomm SDM845: MTP development board
- Renesas: Ebisu R8A77990 board
- Renesas RZ/G1C: iwg23s: iWave G235-SDB
- TI am335x: Pocketbeagle support"
* tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (448 commits)
ARM: dts: aspeed: Fix hwrng register address
arm64: dts: sprd: whale2: Add the rtc enable clock for watchdog
arm64: dts: sprd: Add GPIO and GPIO keys device nodes
arm64: dts: sprd: fix typo in 'remote-endpoint'
arm64: dts: apq8096-db820c: Removed bt-en-1-8v regulator
arm64: dts: fix regulator property name for wlan pcie endpoint
arm64: dts: qcom: msm8996: Use UFS_GDSC for UFS
ARM: dts: pxa3xx: fix MMC clocks
ARM: pxa: dts: add pin definitions for extended GPIOs
ARM: pxa: dts: add gpio-ranges to gpio controller
ARM: dts: ipq8074: Enable few peripherals for hk01 board
ARM: dts: ipq8074: Add pcie nodes
ARM: dts: ipq8074: Add peripheral nodes
ARM: dts: ipq4019: Add qcom-ipq4019-ap.dk07.1-c2 board file
ARM: dts: ipq4019: Add qcom-ipq4019-ap.dk07.1-c1 board file
ARM: dts: ipq4019: Add ipq4019-ap.dk07.1 common data
ARM: dts: ipq4019: Add qcom-ipq4019-ap.dk04.1-c3 board file
ARM: dts: ipq4019: Add ipq4019-ap.dk04.1-c1 board file
ARM: dts: ipq4019: Add ipq4019-ap.dk04.dtsi
ARM: dts: ipq4019: Change the max opp frequency
...
Remove dead links, make spacing consistent, and note that the family was
acquired by Synaptics in 2017.
Signed-off-by: Thomas Hebb <tommyhebb@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
From 4.18 kernel, all the MMC controller instances in DRA7
are programmed using sdhci based driver (sdhci-omap.c). Document
this new requirement here. Both omap2plus_defconfig and
multi_v7_defconfig has CONFIG_MMC_SDHCI_OMAP enabled.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
