Document the Synaptics TDDI (Touch/Display Integration) panel hardware.
Along with the MIPI-DSI panel, these devices also have an in-built LED
backlight device and a touchscreen, all packed together in a single chip.
Also, add compatibles for supported panels - TD4101 and TD4300. Both
have the '-panel' suffix so as to remove any ambiguity between the panel
and touchscreen chips.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251009-panel-synaptics-tddi-v5-1-59390997644e@disroot.org
Basic description for S6E3FC2X01 DDIC with attached panel AMS641RW.
Samsung AMS641RW is 6.41 inch, 1080x2340 pixels, 19.5:9 ratio panel
This panel has three supplies, while panel-simple-dsi is limited to one.
There is no user of this compatible, nor the compatible make sense.
Remove it from simple DSI panel definitions.
Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251023-s6e3fc2x01-v5-1-8f8852e67417@ixit.cz
Rework the current allOf: section such that all handling of
clocks/clock-names properties happens first, and all handling
of power-domains/power-domain-names happens second.
This allows the allOf section to limit various GPU models to
matching clocks count in the first half, and apply the same
for power-domains count in the second half, without conflating
the two limits together.
This makes addition of GPU models with different clocks and
power-domains count easier. No functional change intended.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Matt Coster <matt.coster@imgtec.com>
Link: https://lore.kernel.org/r/20251018130147.12831-2-marek.vasut+renesas@mailbox.org
Signed-off-by: Matt Coster <matt.coster@imgtec.com>
drm-misc-next for v6.19:
UAPI Changes:
Cross-subsystem Changes:
- fbcon cleanups.
- Make drivers depend on FB_TILEBLITTING instead of selecting it,
and hide FB_MODE_HELPERS.
Core Changes:
- More preparations for rust.
- Throttle dirty worker with vblank
- Use drm_for_each_bridge_in_chain_scoped in drm's bridge code and
assorted fixes.
- Ensure drm_client_modeset tests are enabled in UML.
- Rename ttm_bo_put to ttm_bo_fini, as a further step in removing the
TTM bo refcount.
- Add POST_LT_ADJ_REQ training sequence.
- Show list of removed but still allocated bridges.
- Add a simulated vblank interrupt for hardware without it,
and add some helpers to use them in vkms and hypervdrm.
Driver Changes:
- Assorted small fixes, cleanups and updates to host1x, tegra,
panthor, amdxdna, gud, vc4, ssd130x, ivpu, panfrost, panthor,
sysfb, bridge/sn65dsi86, solomon, ast, tidss.
- Convert drivers from using .round_rate() to .determine_rate()
- Add support for KD116N3730A07/A12, chromebook mt8189, JT101TM023,
LQ079L1SX01, raspberrypi 5" panels.
- Improve reclocking on tegra186+ with nouveau.
- Improve runtime pm in amdxdna.
- Add support for HTX_PAI in imx.
- Use a helper to calculate dumb buffer sizes in most drivers.
Signed-off-by: Simona Vetter <simona.vetter@ffwll.ch>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://lore.kernel.org/r/b412fb91-8545-466a-8102-d89c0f2758a7@linux.intel.com
Pull rustfmt fixes from Miguel Ojeda:
"Rust 'rustfmt' cleanup
'rustfmt', by default, formats imports in a way that is prone to
conflicts while merging and rebasing, since in some cases it condenses
several items into the same line.
Document in our guidelines that we will handle this for the moment
with the trailing empty comment workaround and make the tree
'rustfmt'-clean again"
* tag 'rust-rustfmt' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux:
rust: bitmap: fix formatting
rust: cpufreq: fix formatting
rust: alloc: employ a trailing comment to keep vertical layout
docs: rust: add section on imports formatting
Pull kvm fixes from Paolo Bonzini:
"ARM:
- Fix the handling of ZCR_EL2 in NV VMs
- Pick the correct translation regime when doing a PTW on the back of
a SEA
- Prevent userspace from injecting an event into a vcpu that isn't
initialised yet
- Move timer save/restore to the sysreg handling code, fixing EL2
timer access in the process
- Add FGT-based trapping of MDSCR_EL1 to reduce the overhead of debug
- Fix trapping configuration when the host isn't GICv3
- Improve the detection of HCR_EL2.E2H being RES1
- Drop a spurious 'break' statement in the S1 PTW
- Don't try to access SPE when owned by EL3
Documentation updates:
- Document the failure modes of event injection
- Document that a GICv3 guest can be created on a GICv5 host with
FEAT_GCIE_LEGACY
Selftest improvements:
- Add a selftest for the effective value of HCR_EL2.AMO
- Address build warning in the timer selftest when building with
clang
- Teach irqfd selftests about non-x86 architectures
- Add missing sysregs to the set_id_regs selftest
- Fix vcpu allocation in the vgic_lpi_stress selftest
- Correctly enable interrupts in the vgic_lpi_stress selftest
x86:
- Expand the KVM_PRE_FAULT_MEMORY selftest to add a regression test
for the bug fixed by commit 3ccbf6f470 ("KVM: x86/mmu: Return
-EAGAIN if userspace deletes/moves memslot during prefault")
- Don't try to get PMU capabilities from perf when running a CPU with
hybrid CPUs/PMUs, as perf will rightly WARN.
guest_memfd:
- Rework KVM_CAP_GUEST_MEMFD_MMAP (newly introduced in 6.18) into a
more generic KVM_CAP_GUEST_MEMFD_FLAGS
- Add a guest_memfd INIT_SHARED flag and require userspace to
explicitly set said flag to initialize memory as SHARED,
irrespective of MMAP.
The behavior merged in 6.18 is that enabling mmap() implicitly
initializes memory as SHARED, which would result in an ABI
collision for x86 CoCo VMs as their memory is currently always
initialized PRIVATE.
- Allow mmap() on guest_memfd for x86 CoCo VMs, i.e. on VMs with
private memory, to enable testing such setups, i.e. to hopefully
flush out any other lurking ABI issues before 6.18 is officially
released.
- Add testcases to the guest_memfd selftest to cover guest_memfd
without MMAP, and host userspace accesses to mmap()'d private
memory"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (46 commits)
arm64: Revamp HCR_EL2.E2H RES1 detection
KVM: arm64: nv: Use FGT write trap of MDSCR_EL1 when available
KVM: arm64: Compute per-vCPU FGTs at vcpu_load()
KVM: arm64: selftests: Fix misleading comment about virtual timer encoding
KVM: arm64: selftests: Add an E2H=0-specific configuration to get_reg_list
KVM: arm64: selftests: Make dependencies on VHE-specific registers explicit
KVM: arm64: Kill leftovers of ad-hoc timer userspace access
KVM: arm64: Fix WFxT handling of nested virt
KVM: arm64: Move CNT*CT_EL0 userspace accessors to generic infrastructure
KVM: arm64: Move CNT*_CVAL_EL0 userspace accessors to generic infrastructure
KVM: arm64: Move CNT*_CTL_EL0 userspace accessors to generic infrastructure
KVM: arm64: Add timer UAPI workaround to sysreg infrastructure
KVM: arm64: Make timer_set_offset() generally accessible
KVM: arm64: Replace timer context vcpu pointer with timer_id
KVM: arm64: Introduce timer_context_to_vcpu() helper
KVM: arm64: Hide CNTHV_*_EL2 from userspace for nVHE guests
Documentation: KVM: Update GICv3 docs for GICv5 hosts
KVM: arm64: gic-v3: Only set ICH_HCR traps for v2-on-v3 or v3 guests
KVM: arm64: selftests: Actually enable IRQs in vgic_lpi_stress
KVM: arm64: selftests: Allocate vcpus with correct size
...
Aside from the main CMA region, it can be useful to allow userspace to
allocate from the other CMA reserved regions.
Indeed, those regions can have specific properties that can be useful to
a specific us-case.
For example, one of them platform I've been with has ECC enabled on the
entire memory but for a specific region. Using that region to allocate
framebuffers can be particular beneficial because enabling the ECC has a
performance and memory footprint cost.
Thus, exposing these regions as heaps user-space can allocate from and
import wherever needed allows to cover that use-case.
For now, only shared-dma-pools regions with the reusable property (ie,
backed by CMA) are supported, but eventually we'll want to support other
DMA pools types.
Since we collected all the CMA regions created during boot, we can
simply iterate over all of them to create the heaps.
This has a weird interaction with the recent work on the CMA name, in
particular the backward compatibility code created by commit
854acbe75f ("dma-buf: heaps: Give default CMA heap a fixed name").
Indeed, the old name was either 'reserved', or the name of the
reserved-memory region device tree node if the linux,cma-default
property was set.
In both these cases, we have now collected this region during boot, and
we're using the same name. So we're now largely redundant with the
code to handle backward compatibility code, and we can thus remove it
and the associated Kconfig option.
Reviewed-by: T.J. Mercier <tjmercier@google.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
[sumits: rebased the doc to latest]
Link: https://lore.kernel.org/r/20251013-dma-buf-ecc-heap-v8-5-04ce150ea3d9@kernel.org
Since we're going to introduce multiple instances of the CMA heap
driver, there's no single CMA heap anymore.
Let's use the heap name instead to differentiate between all the heaps
available in the system.
While we're at it, let's also rework the backward compatibility part to
make it easier to amend later on.
Reviewed-by: T.J. Mercier <tjmercier@google.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
[sumits: rebased to latest Doc]
Link: https://lore.kernel.org/r/20251013-dma-buf-ecc-heap-v8-1-04ce150ea3d9@kernel.org
KVM x86 fixes for 6.18:
- Expand the KVM_PRE_FAULT_MEMORY selftest to add a regression test for the
bug fixed by commit 3ccbf6f470 ("KVM: x86/mmu: Return -EAGAIN if userspace
deletes/moves memslot during prefault")
- Don't try to get PMU capabbilities from perf when running a CPU with hybrid
CPUs/PMUs, as perf will rightly WARN.
- Rework KVM_CAP_GUEST_MEMFD_MMAP (newly introduced in 6.18) into a more
generic KVM_CAP_GUEST_MEMFD_FLAGS
- Add a guest_memfd INIT_SHARED flag and require userspace to explicitly set
said flag to initialize memory as SHARED, irrespective of MMAP. The
behavior merged in 6.18 is that enabling mmap() implicitly initializes
memory as SHARED, which would result in an ABI collision for x86 CoCo VMs
as their memory is currently always initialized PRIVATE.
- Allow mmap() on guest_memfd for x86 CoCo VMs, i.e. on VMs with private
memory, to enable testing such setups, i.e. to hopefully flush out any
other lurking ABI issues before 6.18 is officially released.
- Add testcases to the guest_memfd selftest to cover guest_memfd without MMAP,
and host userspace accesses to mmap()'d private memory.
Pull sound fixes from Takashi Iwai:
"A collection of small fixes. All changes are rather boring
device-specific fixes and quirks:
- A few fixes for missing NULL checks
- ASoC NAU8821 fixes for jack and irq handling
- Various fixes for ASoC TAS2781, IDT821034, sc8280xp, max9809x,
wcd938x, and SoundWire
- Usual HD-audio and USB-audio quirks"
* tag 'sound-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (27 commits)
ALSA: hda/realtek: Fix mute led for HP Omen 17-cb0xxx
ALSA: usb-audio: fix vendor quirk for Logitech H390
ALSA: usb-audio: add volume quirks for MS LifeChat LX-3000
ASoC: amd/sdw_utils: avoid NULL deref when devm_kasprintf() fails
ASoC: max98090/91: fixed max98091 ALSA widget powering up/down
ASoC: dt-bindings: Add compatible string fsl,imx-audio-tlv320
ASoC: codecs: wcd938x-sdw: remove redundant runtime pm calls
ASoC: sdw_utils: add rt1321 part id to codec_info_list
ALSA: usb-audio: Fix NULL pointer deference in try_to_register_card
ALSA: firewire: amdtp-stream: fix enum kernel-doc warnings
ALSA: usb-audio: add mixer_playback_min_mute quirk for Logitech H390
ASoC: nau8821: Avoid unnecessary blocking in IRQ handler
ASoC: nau8821: Add DMI quirk to bypass jack debounce circuit
ASoC: nau8821: Consistently clear interrupts before unmasking
ASoC: nau8821: Generalize helper to clear IRQ status
ASoC: nau8821: Cancel jdet_work before handling jack ejection
ASoC: codecs: Fix gain setting ranges for Renesas IDT821034 codec
ASoC: tas2781: Update ti,tas2781.yaml for adding tas58xx
ASoC: tas2781: Support more newly-released amplifiers tas58xx in the driver
ASoC: qcom: sc8280xp: Add support for QCS615
...
Pull i2c fixes from Wolfram Sang:
- PM cleanup after all prerequisites are merged with rc1
- usbio: missing addition after all dependencies are in
- slimpro: DT binding schema conversion
* tag 'i2c-for-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
dt-bindings: i2c: Convert apm,xgene-slimpro-i2c to DT schema
i2c: usbio: Add ACPI device-id for MTL-CVF devices
i2c: Remove redundant pm_runtime_mark_last_busy() calls
`rustfmt`, by default, formats imports in a way that is prone to conflicts
while merging and rebasing, since in some cases it condenses several
items into the same line.
For instance, Linus mentioned [1] that the following case:
use crate::{
fmt,
page::AsPageIter,
};
is compressed by `rustfmt` into:
use crate::{fmt, page::AsPageIter};
which is undesirable.
Similarly, `rustfmt` may put several items in the same line even if the
braces span already multiple lines, e.g.:
use kernel::{
acpi, c_str,
device::{property, Core},
of, platform,
};
The options that control the formatting behavior around imports are
generally unstable, and `rustfmt` releases do not allow to use nightly
features, unlike the compiler and other Rust tooling [2].
For the moment, we can introduce a workaround to prevent `rustfmt`
from compressing the example above -- the "trailing empty comment":
use crate::{
fmt,
page::AsPageIter, //
};
which is reminiscent of the trailing comma behavior in other formatters.
We already used empty comments for formatting purposes in the past,
e.g. in commit b9b701fce4 ("rust: clarify the language unstable features
in use").
In addition, `rustfmt` actually reformats with a vertical layout (i.e. it
does not put two items in the same line) when seeing such a comment,
i.e. it doesn't just preserve the formatting, which is good in the sense
that we can use it to easily reformat some imports, since it matches
the style we generally want to have.
A Git merge driver would help (suggested by Gary and Wedson), though
maintainers would need to set it up, the diffs would still be larger
and the formatting rules for imports would remain hard to predict.
Thus document the style that we will follow in the coding guidelines
by introducing a new section and explain how the trailing empty comment
works there too.
We discussed the issue with upstream Rust in our usual Rust <-> Rust
for Linux meeting [3], and there have also been a few other discussions
in parallel in issues [4][5] and Zulip [6]. We will see what happens,
but upstream Rust has already created a subteam of `rustfmt` to try
to overcome the bandwidth issue [7], which is a good signal, and some
organization work has already started (e.g. tracking issues). We will
continue our discussions with them about it.
Cc: Caleb Cartwright <caleb.cartwright@outlook.com>
Cc: Yacin Tmimi <yacintmimi@gmail.com>
Cc: Manish Goregaokar <manishsmail@gmail.com>
Cc: Deadbeef <ent3rm4n@gmail.com>
Cc: Cameron Steffen <cam.steffen94@gmail.com>
Cc: Jieyou Xu <jieyouxu@outlook.com>
Link: https://lore.kernel.org/all/CAHk-=wgO7S_FZUSBbngG5vtejWOpzDfTTBkVvP3_yjJmFddbzA@mail.gmail.com/ [1]
Link: https://github.com/rust-lang/rustfmt/issues/4884 [2]
Link: https://hackmd.io/iSCyY3JTTz-g8YM-nnzTTA [3]
Link: https://github.com/rust-lang/rustfmt/issues/4991 [4]
Link: https://github.com/rust-lang/rustfmt/issues/3361 [5]
Link: https://rust-lang.zulipchat.com/#narrow/channel/392734-council/topic/rustfmt.20maintenance/near/543815381 [6]
Link: https://github.com/rust-lang/team/pull/2017 [7]
Reviewed-by: Benno Lossin <lossin@kernel.org>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Pull networking fixes from Paolo Abeni:
"Including fixes from CAN
Current release - regressions:
- udp: do not use skb_release_head_state() before
skb_attempt_defer_free()
- gro_cells: use nested-BH locking for gro_cell
- dpll: zl3073x: increase maximum size of flash utility
Previous releases - regressions:
- core: fix lockdep splat on device unregister
- tcp: fix tcp_tso_should_defer() vs large RTT
- tls:
- don't rely on tx_work during send()
- wait for pending async decryptions if tls_strp_msg_hold fails
- can: j1939: add missing calls in NETDEV_UNREGISTER notification
handler
- eth: lan78xx: fix lost EEPROM write timeout in
lan78xx_write_raw_eeprom
Previous releases - always broken:
- ip6_tunnel: prevent perpetual tunnel growth
- dpll: zl3073x: handle missing or corrupted flash configuration
- can: m_can: fix pm_runtime and CAN state handling
- eth:
- ixgbe: fix too early devlink_free() in ixgbe_remove()
- ixgbevf: fix mailbox API compatibility
- gve: Check valid ts bit on RX descriptor before hw timestamping
- idpf: cleanup remaining SKBs in PTP flows
- r8169: fix packet truncation after S4 resume on RTL8168H/RTL8111H"
* tag 'net-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (50 commits)
udp: do not use skb_release_head_state() before skb_attempt_defer_free()
net: usb: lan78xx: fix use of improperly initialized dev->chipid in lan78xx_reset
netdevsim: set the carrier when the device goes up
selftests: tls: add test for short splice due to full skmsg
selftests: net: tls: add tests for cmsg vs MSG_MORE
tls: don't rely on tx_work during send()
tls: wait for pending async decryptions if tls_strp_msg_hold fails
tls: always set record_type in tls_process_cmsg
tls: wait for async encrypt in case of error during latter iterations of sendmsg
tls: trim encrypted message to match the plaintext on short splice
tg3: prevent use of uninitialized remote_adv and local_adv variables
MAINTAINERS: new entry for IPv6 IOAM
gve: Check valid ts bit on RX descriptor before hw timestamping
net: core: fix lockdep splat on device unregister
MAINTAINERS: add myself as maintainer for b53
selftests: net: check jq command is supported
net: airoha: Take into account out-of-order tx completions in airoha_dev_xmit()
tcp: fix tcp_tso_should_defer() vs large RTT
r8152: add error handling in rtl8152_driver_init
usbnet: Fix using smp_processor_id() in preemptible code warnings
...
Merge series from Le Qi <le.qi@oss.qualcomm.com>:
This patch series adds support for the QCS615 sound card:
- Updates device tree bindings for SM8250 to include QCS615.
- Adds QCS615 support in the SC8280XP ASoC driver.
Marc Kleine-Budde says:
====================
pull-request: can 2025-10-14
The first 2 paches are by Celeste Liu and target the gS_usb driver.
The first patch remove the limitation to 3 CAN interface per USB
device. The second patch adds the missing population of
net_device->dev_port.
The next 4 patches are by me and fix the m_can driver. They add a
missing pm_runtime_disable(), fix the CAN state transition back to
Error Active and fix the state after ifup and suspend/resume.
Another patch by me targets the m_can driver, too and replaces Dong
Aisheng's old email address.
The next 2 patches are by Vincent Mailhol and update the CAN
networking Documentation.
Tetsuo Handa contributes the last patch that add missing cleanup calls
in the NETDEV_UNREGISTER notification handler.
* tag 'linux-can-fixes-for-6.18-20251014' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can:
can: j1939: add missing calls in NETDEV_UNREGISTER notification handler
can: add Transmitter Delay Compensation (TDC) documentation
can: remove false statement about 1:1 mapping between DLC and length
can: m_can: replace Dong Aisheng's old email address
can: m_can: fix CAN state in system PM
can: m_can: m_can_chip_config(): bring up interface in correct state
can: m_can: m_can_handle_state_errors(): fix CAN state transition to Error Active
can: m_can: m_can_plat_remove(): add missing pm_runtime_disable()
can: gs_usb: gs_make_candev(): populate net_device->dev_port
can: gs_usb: increase max interface to U8_MAX
====================
Link: https://patch.msgid.link/20251014122140.990472-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Pull ext4 bug fixes from Ted Ts'o:
- Fix regression caused by removing CONFIG_EXT3_FS when testing some
very old defconfigs
- Avoid a BUG_ON when opening a file on a maliciously corrupted file
system
- Avoid mm warnings when freeing a very large orphan file metadata
- Avoid a theoretical races between metadata writeback and checkpoints
(it's very hard to hit in practice, since the race requires that the
writeback take a very long time)
* tag 'ext4_for_linus-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
Use CONFIG_EXT4_FS instead of CONFIG_EXT3_FS in all of the defconfigs
ext4: free orphan info with kvfree
ext4: detect invalid INLINE_DATA + EXTENTS flag combination
ext4, doc: fix and improve directory hash tree description
ext4: wait for ongoing I/O to complete before freeing blocks
jbd2: ensure that all ongoing I/O complete before freeing blocks
The CAN-FD section of can.rst still states that there is a 1:1 mapping
between the Classical CAN DLC and its length. This is only true for
the DLC values up to 8. Beyond that point, the length remains at 8.
For reference, the mapping between the CAN DLC and the length is given
in below table [1]:
DLC value CBFF and CEFF FBFF and FEFF
[decimal] [byte] [byte]
----------------------------------------------
0 0 0
1 1 1
2 2 2
3 3 3
4 4 4
5 5 5
6 6 6
7 7 7
8 8 8
9 8 12
10 8 16
11 8 20
12 8 24
13 8 32
14 8 48
15 8 64
Remove the erroneous statement. Instead just state that the length of
a Classical CAN frame ranges from 0 to 8.
[1] ISO 11898-1:2024, Table 5 -- DLC: coding of the four LSB
Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
Link: https://patch.msgid.link/20251013-can-fd-doc-v2-1-5d53bdc8f2ad@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
GICv5 hosts optionally include FEAT_GCIE_LEGACY, which allows them to
execute GICv3-based VMs on GICv5 hardware. Update the GICv3
documentation to reflect this now that GICv3 guests are supports on
compatible GICv5 hosts.
Signed-off-by: Sascha Bischoff <sascha.bischoff@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
KVM rejects calls to KVM_{GET,SET}_VCPU_EVENTS for an uninitialized vCPU
as of commit cc96679f3c03 ("KVM: arm64: Prevent access to vCPU events
before init"). Update the corresponding API documentation.
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
