TI K3 TISCI:
- ti_sci: Add BOARDCFG_MANAGED mode for support system suspend/resume cycles
- ti_sci: Add support for restoring IRQ and clock contexts during resume.
- clk: keystone: sci-clk: Add clock restoration support.
SoC Drivers:
- k3-socinfo: Add support for identifying AM62P silicon variants via NVMEM,
along with corresponding dt-bindings update for nvmem-cells support
- k3-ringacc: Fix incorrect access mode for ring pop tail IO/proxy operations
Keystone Navigator (knav) Cleanup and Fixes:
- knav_qmss: Multiple code quality improvements
- knav_qmss_queue: Implement proper resource cleanup in the remove() path
General Cleanups:
- k3-ringacc: Use str_enabled_disabled() helper for consistency
- knav_qmss: Use %pe format specifier for PTR_ERR() printing
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Merge tag 'ti-driver-soc-for-v7.2' of https://git.kernel.org/pub/scm/linux/kernel/git/ti/linux into soc/drivers
TI SoC driver updates for v7.2
TI K3 TISCI:
- ti_sci: Add BOARDCFG_MANAGED mode for support system suspend/resume cycles
- ti_sci: Add support for restoring IRQ and clock contexts during resume.
- clk: keystone: sci-clk: Add clock restoration support.
SoC Drivers:
- k3-socinfo: Add support for identifying AM62P silicon variants via NVMEM,
along with corresponding dt-bindings update for nvmem-cells support
- k3-ringacc: Fix incorrect access mode for ring pop tail IO/proxy operations
Keystone Navigator (knav) Cleanup and Fixes:
- knav_qmss: Multiple code quality improvements
- knav_qmss_queue: Implement proper resource cleanup in the remove() path
General Cleanups:
- k3-ringacc: Use str_enabled_disabled() helper for consistency
- knav_qmss: Use %pe format specifier for PTR_ERR() printing
* tag 'ti-driver-soc-for-v7.2' of https://git.kernel.org/pub/scm/linux/kernel/git/ti/linux:
firmware: ti_sci: Add support for restoring clock context during resume
clk: keystone: sci-clk: Add restore_context() operation
firmware: ti_sci: Add support for restoring IRQs during resume
firmware: ti_sci: Add BOARDCFG_MANAGED mode support
soc: ti: k3-ringacc: Use str_enabled_disabled() helper
soc: ti: knav_dma: Use IOMEM_ERR_PTR() in pktdma_get_regs()
soc: ti: knav_dma: Remove dead check on unsigned args.args[0]
soc: ti: knav_dma: Remove unused DMA_PRIO_MASK macro
soc: ti: knav_qmss_acc: Fix kernel-doc Return: tag
soc: ti: knav_qmss: Fix __iomem annotations and __be32 type
soc: ti: knav_qmss: Use %pe to print PTR_ERR()
soc: ti: knav_qmss: Fix kernel-doc Return: tags
soc: ti: knav_qmss: Inline lockdep condition in for_each_handle_rcu
soc: ti: knav_qmss: Rename global kdev to knav_qdev to fix -Wshadow
soc: ti: knav_qmss: Remove remaining redundant ENOMEM printks
soc: ti: knav_qmss_queue: Implement resource cleanup in remove()
soc: ti: k3-ringacc: Fix access mode for k3_ringacc_ring_pop_tail_io/proxy
soc: ti: knav_dma: fix all kernel-doc warnings in knav_dma.h
soc: ti: k3-socinfo: Add support for AM62P variants via NVMEM
dt-bindings: hwinfo: ti,k3-socinfo: Add nvmem-cells support
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
pull the following:
- Justin changes the soc_device driver to be more modern and consolidate
the initialization
- Chen-Yu updates the BCM2835 firmware Kconfig dependency and adds
COMPILE_TEST
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Merge tag 'arm-soc/for-7.2/drivers' of https://github.com/Broadcom/stblinux into soc/drivers
This pull request contains Broadcom SoC drivers changes for 7.2, please
pull the following:
- Justin changes the soc_device driver to be more modern and consolidate
the initialization
- Chen-Yu updates the BCM2835 firmware Kconfig dependency and adds
COMPILE_TEST
* tag 'arm-soc/for-7.2/drivers' of https://github.com/Broadcom/stblinux:
firmware: raspberrypi: Change dependency to ARCH_BCM2835 and COMPILE_TEST
soc: brcmstb: consolidate initcall functions
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Improve Samsung Exynos (and Google GS101) ACPM (Alive Clock and Power
Manager) firmware driver:
1. Few code improvements.
2. Add support for protocol used to communicate with Thermal Management
Unit (TMU). This will allow to implement the thermal driver working
for newer Samsung Exynos and Google GS101 SoCs.
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Merge tag 'samsung-drivers-7.2' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into soc/drivers
Samsung SoC drivers for v7.2
Improve Samsung Exynos (and Google GS101) ACPM (Alive Clock and Power
Manager) firmware driver:
1. Few code improvements.
2. Add support for protocol used to communicate with Thermal Management
Unit (TMU). This will allow to implement the thermal driver working
for newer Samsung Exynos and Google GS101 SoCs.
* tag 'samsung-drivers-7.2' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
firmware: samsung: acpm: remove compile-testing stubs
firmware: samsung: acpm: Add devm_acpm_get_by_phandle helper
firmware: samsung: acpm: Add TMU protocol support
firmware: samsung: acpm: Make acpm_ops const and access via pointer
firmware: samsung: acpm: Drop redundant _ops suffix in acpm_ops members
firmware: samsung: acpm: Annotate rx_data->cmd with __counted_by_ptr
firmware: samsung: acpm: Consolidate transfer initialization helper
firmware: samsung: acpm: Fix infinite loop on sequence number exhaustion
firmware: samsung: acpm: Fix missing LKMM barriers in sequence allocator
firmware: samsung: acpm: Fix false timeouts and Use-After-Free in polling
firmware: samsung: acpm: Fix mailbox channel leak on probe error
firmware: samsung: acpm: Fix cross-thread RX length corruption
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This set of changes contains another attempt at resolving a Kconfig
dependency, propagates debugfs error codes and adds support for multiple
sockets to the BPMP driver.
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Merge tag 'tegra-for-7.2-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into soc/drivers
firmware: tegra: Changes for v7.2-rc1
This set of changes contains another attempt at resolving a Kconfig
dependency, propagates debugfs error codes and adds support for multiple
sockets to the BPMP driver.
* tag 'tegra-for-7.2-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
firmware: tegra: bpmp: Add support for multi-socket platforms
firmware: tegra: bpmp: Propagate debugfs errors
firmware: tegra: Make TEGRA_IVC a hidden Kconfig symbol
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The bulk of these changes converts existing users to the modern variants
of the API that take a PMC instance as argument. This completes the
transition to multi-instance support, which then makes room for cleanups
and restricting the remaining legacy APIs to 32-bit platforms.
Some changes in this set also clean up powergate debugfs and restrict
the power-off handler to be installed only where appropriate. Lastly,
support for Tegra238 is added.
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Merge tag 'tegra-for-7.2-pmc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into soc/drivers
soc/tegra: pmc: Changes for v7.2-rc1
The bulk of these changes converts existing users to the modern variants
of the API that take a PMC instance as argument. This completes the
transition to multi-instance support, which then makes room for cleanups
and restricting the remaining legacy APIs to 32-bit platforms.
Some changes in this set also clean up powergate debugfs and restrict
the power-off handler to be installed only where appropriate. Lastly,
support for Tegra238 is added.
* tag 'tegra-for-7.2-pmc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
soc/tegra: pmc: Add Tegra238 support
soc/tegra: pmc: Restrict power-off handler to Nexus 7
soc/tegra: pmc: Populate powergate debugfs only when needed
soc/tegra: pmc: Move legacy code behind CONFIG_ARM guard
soc/tegra: pmc: Remove unused legacy functions
soc/tegra: pmc: Create PMC context dynamically
usb: xhci: tegra: Explicitly specify PMC instance to use
PCI: tegra: Explicitly specify PMC instance to use
media: vde: Explicitly specify PMC instance to use
drm/tegra: Explicitly specify PMC instance to use
drm/nouveau: tegra: Explicitly specify PMC instance to use
ata: ahci_tegra: Explicitly specify PMC instance to use
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
These changes update some maintainer contact information, add a modern
way of reading the chip information and cleanup/enhance some existing
code.
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Merge tag 'tegra-for-7.2-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into soc/drivers
soc/tegra: Changes for v7.2-rc1
These changes update some maintainer contact information, add a modern
way of reading the chip information and cleanup/enhance some existing
code.
* tag 'tegra-for-7.2-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
soc/tegra: Use ARM SMCCC to get chip ID, revision, and platform info
soc/tegra: fuse: Register nvmem lookups at probe
Documentation: ABI: Take over as contact for sysfs-driver-tegra-fuse
MAINTAINERS: Move Peter De Schrijver to CREDITS
bus: tegra-aconnect: Use dev_err_probe for probe error paths
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
While bc13f14f5c ("soc: aspeed: cleanup dead default for
ASPEED_SOCINFO") was committed just now it has been in -next for a while as
b333a0f1c857411d83a02aa6f1d9ecc7666d6179. The commit is fresh as I moved it
between branches.
Other than that it's just the one other patch from Krzysztof tidying up the
location of MODULE_DEVICE_TABLE().
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Merge tag 'aspeed-7.2-drivers-0' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/bmc/linux into soc/drivers
aspeed: First batch of driver changes for v7.2
While bc13f14f5c ("soc: aspeed: cleanup dead default for
ASPEED_SOCINFO") was committed just now it has been in -next for a while as
b333a0f1c857411d83a02aa6f1d9ecc7666d6179. The commit is fresh as I moved it
between branches.
Other than that it's just the one other patch from Krzysztof tidying up the
location of MODULE_DEVICE_TABLE().
* tag 'aspeed-7.2-drivers-0' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/bmc/linux:
soc: aspeed: cleanup dead default for ASPEED_SOCINFO
soc: aspeed: Move MODULE_DEVICE_TABLE next to the table itself
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Mostly changes to the SRAM driver to allow for one SRAM region to be
"claimed" by multiple changes. When a region is "claimed" it is removed
or disconnected from the CPU's view. This is needed on the H6 and H616,
which have one alias region seemingly shared between the video codec
engine and the display engine.
One minor fix for the RSB driver is also included.
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Merge tag 'sunxi-drivers-for-7.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into soc/drivers
Allwinner driver changes for 7.2
Mostly changes to the SRAM driver to allow for one SRAM region to be
"claimed" by multiple changes. When a region is "claimed" it is removed
or disconnected from the CPU's view. This is needed on the H6 and H616,
which have one alias region seemingly shared between the video codec
engine and the display engine.
One minor fix for the RSB driver is also included.
* tag 'sunxi-drivers-for-7.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
bus: sunxi-rsb: Always check register address validity
soc: sunxi: sram: Add H616 SRAM regions
soc: sunxi: sram: Support claiming multiple regions per device
soc: sunxi: sram: Allow SRAM to be claimed multiple times
soc: sunxi: sram: Const-ify sunxi_sram_func data and references
dt-bindings: sram: sunxi-sram: Add H616 SRAM regions
dt-bindings: sram: Document Allwinner H616 VE SRAM
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
This adds subsys ID compatibility in MediaTek CMDQ, paving
the way for adding support for the MT8196 SoC, and fixes
the Multimedia System (MMSYS) routing masks for the MT8167
SoC.
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Merge tag 'mtk-soc-for-v7.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mediatek/linux into soc/drivers
MediaTek SoC driver updates
This adds subsys ID compatibility in MediaTek CMDQ, paving
the way for adding support for the MT8196 SoC, and fixes
the Multimedia System (MMSYS) routing masks for the MT8167
SoC.
* tag 'mtk-soc-for-v7.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mediatek/linux:
soc: mediatek: mtk-mmsys: Restore MT8167 routing masks lost during merge
soc: mediatek: mtk-cmdq: Add cmdq_pkt_jump_rel_temp() for removing shift_pa
soc: mediatek: Use pkt_write function pointer for subsys ID compatibility
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
The same kconfig 'default' statement appears twice for ASPEED_SOCINFO,
which is unnecessary.
This dead code was found by kconfirm, a static analysis tool for Kconfig.
Signed-off-by: Julian Braha <julianbraha@gmail.com>
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>
On multi-socket platforms each socket has its own BPMP that is
registered with the kernel, so the existing single fixed "bpmp"
debugfs directory name cannot accommodate more than one instance.
Group the per-socket BPMP debugfs entries under a shared top-level
/sys/kernel/debug/bpmp/ directory, with each socket's BPMP device
under a "<numa-node-id>-bpmp" subdirectory:
/sys/kernel/debug/bpmp/0-bpmp/...
/sys/kernel/debug/bpmp/1-bpmp/...
For a multi-socket platform, the root debugfs bpmp/ directory is created
by the first BPMP device that is populated. For single-socket platforms,
the existing directory structure is preserved.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
The Tegra BPMP debugfs code returns -ENOMEM for most cases where calls
to debugfs_create_dir() or debugfs_create_file() fail. These debugfs
functions return an ERR_PTR with the actual error code on failure.
Therefore, update the Tegra BPMP debugfs code to propagate the actual
error code on failure.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
The Tegra238 PMC is largely similar to that found on earlier chips, but
not completely compatible. Add support for the PMC on Tegra238.
Signed-off-by: Prathamesh Shete <pshete@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
The Tegra PMC power-off handler exists solely to reboot the Nexus 7 into
a special bootloader mode when a USB cable is connected, so that the
bootloader can display battery status instead of powering off. There is
no reason to register it on any other Tegra board.
Guard the registration behind of_machine_is_compatible("asus,grouper")
and rename the handler to tegra_pmc_grouper_power_off_handler to make
its scope explicit. The of_machine_is_compatible() check inside the
handler itself is now redundant and is removed.
This also avoids occupying SYS_OFF_PRIO_FIRMWARE on boards that have
other handlers at that priority level.
Assisted-by: Claude:claude-sonnet-4-6
Signed-off-by: Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt>
Signed-off-by: Thierry Reding <treding@nvidia.com>
The 'powergate' debugfs node is used to show the state of the powergates
but for some devices the 'num_powergates' is 0 and so it displays
nothing. Therefore, only populate this debugfs entry for devices where
num_powergates is greater than 0.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
None of this legacy code is needed on 64-bit ARM devices, so it can be
moved behind a corresponding preprocessor guard. This more cleanly
separates out the legacy code from code needed on current platforms.
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
All callers of these functions have been replaced by their variants
taking a PMC context as an input, so they are no longer used and can be
removed.
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
For legacy purposes, an early PMC context is needed to support certain
drivers and functionalities. However, when the PMC driver is probed in
the later boot stages, the early context is no longer needed. Allocate
the PMC context dynamically at probe time so that it can be used going
forward.
While at it, rename the early PMC context to more accurately reflect
what it is used for. It's technically not only for early boot stages,
but also to support some code that doesn't have a way of obtaining the
correct context otherwise (e.g. no access to device tree).
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Store buffer ID in tee_shm->sec_world_id and remove internal tracking
structures to align with other TEE drivers
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Merge tag 'amdtee-for-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/jenswi/linux-tee into soc/drivers
AMD-TEE update for 7.2
Store buffer ID in tee_shm->sec_world_id and remove internal tracking
structures to align with other TEE drivers
* tag 'amdtee-for-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/jenswi/linux-tee:
tee: amdtee: store buffer ID in tee_shm->sec_world_id
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
1. The FF-A core is moved onto the driver model by reverting the earlier
rootfs initcall change and registering the core as a platform driver with
a synthetic arm-ffa platform device. Enumerated FF-A devices are now
parented below the FF-A core device, and probing is deferred until pKVM
has completed its FF-A proxy initialisation.
2. The platform-driver conversion is also adjusted so systems without FF-A
support treat early unsupported transport/version discovery as a quiet
probe miss rather than a failed matched probe.
3. The register-based partition discovery path now honors the descriptor
size reported by FFA_PARTITION_INFO_GET_REGS. This keeps parsing aligned
for newer FF-A descriptor layouts while still copying only the fields the
driver understands.
4. Also included is an Arm SMCCC fix for the optional SOC_ID name call: the
name query now uses the SMC64 function ID required for returning eight
characters per register.
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Merge tag 'ffa-updates-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into soc/drivers
Arm FF-A + SMCCC updates for v7.2
1. The FF-A core is moved onto the driver model by reverting the earlier
rootfs initcall change and registering the core as a platform driver with
a synthetic arm-ffa platform device. Enumerated FF-A devices are now
parented below the FF-A core device, and probing is deferred until pKVM
has completed its FF-A proxy initialisation.
2. The platform-driver conversion is also adjusted so systems without FF-A
support treat early unsupported transport/version discovery as a quiet
probe miss rather than a failed matched probe.
3. The register-based partition discovery path now honors the descriptor
size reported by FFA_PARTITION_INFO_GET_REGS. This keeps parsing aligned
for newer FF-A descriptor layouts while still copying only the fields the
driver understands.
4. Also included is an Arm SMCCC fix for the optional SOC_ID name call: the
name query now uses the SMC64 function ID required for returning eight
characters per register.
* tag 'ffa-updates-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
firmware: arm_ffa: Treat missing FF-A feature on a platform as a probe miss
firmware: smccc: Fix Arm SMCCC SOC_ID name call
firmware: arm_ffa: Honor partition info descriptor size
firmware: arm_ffa: Defer probe until pKVM is initialized
firmware: arm_ffa: Set the core device as FF-A device parent
firmware: arm_ffa: Register core as a platform driver
Revert "firmware: arm_ffa: Change initcall level of ffa_init() to rootfs_initcall"
firmware: arm_ffa: Fix sched-recv callback partition lookup
firmware: arm_ffa: Snapshot notifier callbacks under lock
firmware: arm_ffa: Align RxTx buffer size before mapping
firmware: arm_ffa: Validate framework notification message layout
firmware: arm_ffa: Keep framework RX release under lock
firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies
firmware: arm_ffa: Unregister bus notifier on teardown for FF-A v1.0
firmware: arm_ffa: Fix per-vcpu self notifications handling in workqueue
firmware: arm_ffa: Avoid collapsing NPI work from different CPUs
firmware: arm_ffa: Skip free_pages on RX buffer alloc failure
firmware: arm_ffa: Check for NULL FF-A ID table while driver registration
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
1. Improve SCMI clock handling with a protocol-level determine_rate operation,
simplified per-clock rate properties, dynamic rate allocation, bounded
iterator support, lazy full-rate discovery, and hardened parent/rate
enumeration.
2. Fix several SCMI bounds and payload validation issues, including clock rate
discovery OOB handling, power domain name lookup, Powercap domain state
access, BASE_ERROR_EVENT and SENSOR_UPDATE payload sizing, and sensor config
width handling.
3. Rework SCMI transport probing for virtio and OP-TEE using per-instance
transport handles and a generic transport supplier, removing the need to
register SCMI core drivers from transport probe paths.
4. Add i.MX SCMI MISC reset reason support and print i.MX95 boot/shutdown
reasons via the System Manager interface.
5. Clean up SCMI core internals, including base-info naming, quirk parsing and
table iteration, and list iteration.
6. Fix SCPI clock provider removal so child clock providers are unregistered
using the same DT nodes used at registration time.
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Merge tag 'scmi-updates-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into soc/drivers
Arm SCMI updates for v7.2
1. Improve SCMI clock handling with a protocol-level determine_rate operation,
simplified per-clock rate properties, dynamic rate allocation, bounded
iterator support, lazy full-rate discovery, and hardened parent/rate
enumeration.
2. Fix several SCMI bounds and payload validation issues, including clock rate
discovery OOB handling, power domain name lookup, Powercap domain state
access, BASE_ERROR_EVENT and SENSOR_UPDATE payload sizing, and sensor config
width handling.
3. Rework SCMI transport probing for virtio and OP-TEE using per-instance
transport handles and a generic transport supplier, removing the need to
register SCMI core drivers from transport probe paths.
4. Add i.MX SCMI MISC reset reason support and print i.MX95 boot/shutdown
reasons via the System Manager interface.
5. Clean up SCMI core internals, including base-info naming, quirk parsing and
table iteration, and list iteration.
6. Fix SCPI clock provider removal so child clock providers are unregistered
using the same DT nodes used at registration time.
* tag 'scmi-updates-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux: (31 commits)
firmware: arm_scmi: optee: Rework transport probe sequence
firmware: arm_scmi: virtio: Rework transport probe sequence
firmware: arm_scmi: Add a generic transport supplier
firmware: arm_scmi: Add transport instance handles
firmware: arm_scmi: Fix OOB in scmi_power_name_get()
firmware: arm_scmi: Validate Powercap domains before state access
firmware: arm_scmi: Validate SENSOR_UPDATE payload size
firmware: arm_scmi: Validate BASE_ERROR_EVENT payload size
firmware: arm_scmi: Read sensor config as 32-bit value
clk: scpi: Unregister child clock providers on remove
firmware: arm_scmi: Introduce all_rates_get clock operation
firmware: arm_scmi: Fix OOB in scmi_clock_describe_rates_get_lazy()
firmware: arm_scmi: Use bound iterators to minimize discovered rates
firmware: arm_scmi: Use proper iter_response_bound_cleanup() name
firmware: arm_scmi: Fix bound iterators returning too many items
firmware: arm_scmi: Add bound iterators support
firmware: arm_scmi: Refactor iterators internal allocation
firmware: arm_scmi: Harden clock parents discovery
firmware: arm_scmi: Make clock rates allocation dynamic
firmware: arm_scmi: Drop unused clock rate interfaces
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Enable QSEECOM and with that access to UEFI variables on the Surface Pro
12in laptop.
Refactor the Geni Serial-Engine helper code to allow the serial engine
drivers (such as I2C) to operate on targets where power and performance
is controlled through an SCMI server instead of individual resources in
Linux.
Extend the LLCC driver to support reading its data from a System Cache
Table (SCT) in memory instead of being hard coded per platform in the
driver. Also add support for the Eliza platform.
Add support for the Hawi platform to pd-mapper.
Switch the SMEM driver to track partitions using xarray to handle the
ever growing number of hosts better.
Extend the socinfo driver with knowledge about the Nord, SM7750,
IPQ9650, and Shikra SoCs, as well as PMAU0102, PMC1020H, PMIV0102, and
PMIV0104 PMICs.
Define UBWC 3.1 and add a couple of convenient helpers in the UBWC
library for MDSS and Adreno.
Fix a memory leak in the WCNSS firmware download mechanism.
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Merge tag 'qcom-drivers-for-7.2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into soc/drivers
Qualcomm driver updates for v7.2
Enable QSEECOM and with that access to UEFI variables on the Surface Pro
12in laptop.
Refactor the Geni Serial-Engine helper code to allow the serial engine
drivers (such as I2C) to operate on targets where power and performance
is controlled through an SCMI server instead of individual resources in
Linux.
Extend the LLCC driver to support reading its data from a System Cache
Table (SCT) in memory instead of being hard coded per platform in the
driver. Also add support for the Eliza platform.
Add support for the Hawi platform to pd-mapper.
Switch the SMEM driver to track partitions using xarray to handle the
ever growing number of hosts better.
Extend the socinfo driver with knowledge about the Nord, SM7750,
IPQ9650, and Shikra SoCs, as well as PMAU0102, PMC1020H, PMIV0102, and
PMIV0104 PMICs.
Define UBWC 3.1 and add a couple of convenient helpers in the UBWC
library for MDSS and Adreno.
Fix a memory leak in the WCNSS firmware download mechanism.
* tag 'qcom-drivers-for-7.2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: (40 commits)
soc: qcom: geni-se: Introduce helper APIs for performance control
soc: qcom: geni-se: Introduce helper API for attaching power domains
soc: qcom: geni-se: Add resources activation/deactivation helpers
soc: qcom: geni-se: Handle core clk in geni_se_clks_off() and geni_se_clks_on()
soc: qcom: geni-se: Introduce helper API for resource initialization
soc: qcom: geni-se: Add geni_icc_set_bw_ab() function
soc: qcom: geni-se: Refactor geni_icc_get() and make qup-memory ICC path optional
soc: qcom: llcc-qcom: Fix NULL vs IS_ERR() bug in qcom_llcc_get_fw_config()
soc: qcom: llcc-qcom: Add support for Eliza
dt-bindings: cache: qcom,llcc: Document Eliza LLCC block
soc: qcom: ubwc: add helper controlling AMSBC enablement
soc: qcom: ubwc: define helper for MDSS and Adreno drivers
soc: qcom: ubwc: define UBWC 3.1
soc: qcom: socinfo: Add SoC ID for Nord SA8797P
dt-bindings: arm: qcom,ids: Add SoC ID for Nord SA8797P
soc: qcom: socinfo: Add SoC ID for SM7750
dt-bindings: arm: qcom,ids: Add SoC ID for SM7750
soc: qcom: socinfo: Add PMIC PMAU0102
soc: qcom: socinfo: Add PMIV0102 & PMIV0104 PMICs
firmware: qcom: scm: Allow QSEECOM on Surface Pro 12in
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Sashiko reported an inconsistent use of NULL vs ERR_PTR()
returns in the stub helpers in xynos-acpm-protocol.h.
Since this only happens on dead code for COMPILE_TEST=y, this is not
really a bug though. Having stub functions that return NULL is a common
way to define optional interfaces, where callers still work when the
feature is disabled, though this clearly does not work for acpm because
some callers have a NULL pointer dereference when compile testing.
Since CONFIG_EXYNOS_ACPM_PROTOCOL already supports compile-testing itself,
and all (both) drivers using it clearly require the support, so this
just simplifies the option space without losing any build coverage.
Remove the stub functions entirely and adjust the one Kconfig
dependency to require EXYNOS_ACPM_PROTOCOL unconditionally.
Fixes: 6837c006d4 ("firmware: exynos-acpm: add empty method to allow compile test")
Closes: https://sashiko.dev/#/patchset/20260420-acpm-tmu-v3-0-3dc8e93f0b26%40linaro.org
Link: https://lore.kernel.org/all/a7994860-24a3-4f87-84bf-109ed653dda4@linaro.org/
Reviewed-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260529134454.2147446-1-arnd@kernel.org
[krzk: Rebase on difference in devm_acpm_get_by_node()]
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Introduce devm_acpm_get_by_phandle() to standardize how consumer
drivers acquire a handle to the ACPM IPC interface. Enforce the
use of the "samsung,acpm-ipc" property name across the SoC and
simplify the boilerplate code in client drivers.
The first consumer of this helper is the Exynos ACPM Thermal Management
Unit (TMU) driver. The TMU utilizes a hybrid management approach: direct
register access from the Application Processor (AP) is restricted to the
interrupt pending (INTPEND) registers for event identification.
High-level functional tasks, such as sensor initialization, threshold
programming, and temperature reads, are delegated to the ACPM firmware
via this IPC interface.
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Link: https://patch.msgid.link/20260515-acpm-tmu-helpers-v2-6-8ca011d5a965@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
The Thermal Management Unit (TMU) on the Google GS101 SoC is managed
through a hybrid model shared between the kernel and the Alive Clock
and Power Manager (ACPM) firmware.
Add the protocol helpers required to communicate with the ACPM for
thermal operations, including initialization, threshold configuration,
temperature reading, and system suspend/resume handshakes.
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Link: https://patch.msgid.link/20260515-acpm-tmu-helpers-v2-5-8ca011d5a965@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Replace the embedded `struct acpm_ops` inside `struct acpm_handle` with
a pointer to a `const struct acpm_ops`.
Previously, the operations structure was embedded directly within the
handle and populated dynamically at runtime via `acpm_setup_ops()`.
This resulted in mutable function pointers and unnecessary per-instance
memory overhead.
By defining `exynos_acpm_driver_ops` statically as a `const` structure,
the function pointers are now safely housed in the read-only `.rodata`
section. This improves security by preventing function pointer
overwrites, saves memory, and slightly reduces initialization overhead
in `acpm_probe()`.
Consequently, update all consumer drivers (clk, mfd) to access the
operations via the new pointer indirection (`->ops->`). Finally, fix
the previously empty kernel-doc description for the ops member to
reflect its new pointer nature.
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Link: https://patch.msgid.link/20260515-acpm-tmu-helpers-v2-4-8ca011d5a965@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Rename the `n_cmd` member of `struct acpm_rx_data` to `cmdcnt` to
maintain consistent nomenclature across the driver (aligning with
`txcnt`, `rxcnt`, and transfer helpers).
With the member renamed, annotate the dynamically allocated `cmd`
pointer with the `__counted_by_ptr(cmdcnt)` macro to improve runtime
bounds checking.
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Link: https://patch.msgid.link/20260515-acpm-tmu-helpers-v2-2-8ca011d5a965@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Both the DVFS and PMIC ACPM sub-drivers implement similar local helper
functions (acpm_dvfs_set_xfer and acpm_pmic_set_xfer) to initialize the
acpm_xfer structure before sending an IPC message.
Move this logic into a single centralized helper, acpm_set_xfer(),
in the core ACPM driver to reduce boilerplate, eliminate code
duplication, and prepare for the upcoming ACPM TMU helper sub-driver
which will also utilize this method.
Note that there is no change in underlying functionality. While the old
acpm_pmic_set_xfer() unconditionally assigned the RX buffer parameters
(xfer->rxd and xfer->rxcnt), the new unified helper introduces a
'response' boolean. All updated PMIC call sites now explicitly pass
'true' for this argument. This ensures the unified helper takes the
'if (response)' branch, performing the exact same assignments and
preserving the original PMIC behavior.
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Link: https://patch.msgid.link/20260515-acpm-tmu-helpers-v2-1-8ca011d5a965@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
The above SoCs have a weird register layout for the mailbox registers.
So, encapsulate register offset calculation in a per-SoC callback. Other
than that, only a separate config struct and compatibles are needed.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260519075620.4128-3-wsa+renesas@sang-engineering.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
The above SoCs have only 12 mailboxes and do not have an extra register
space for mailboxes. Everything is contained in the common register
set. In addition to adding these SoCs, the other entries get updated to
enforce 2 register spaces and their specific number of interrupts.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20260519075620.4128-2-wsa+renesas@sang-engineering.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tegra410 and Tegra241 deprecate the HIDREV register. The recommended
method is to use ARM SMCCC to retrieve the chip ID, major and minor
revisions, and platform information.
Prefer ARM SMCCC when the platform supports it; fall back to HIDREV
otherwise. Behavior on older Tegra SoCs that do not support ARM SMCCC
remains unchanged.
Signed-off-by: Kartik Rajput <kkartik@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Sashiko identified a possible infinite loop [1].
ACPM IPC sequence numbers are tracked via a 64-bit bitmap. Previously,
acpm_prepare_xfer() used a do...while loop to search for a free
sequence number.
If all 63 available sequence numbers are leaked due to transient
hardware timeouts or mailbox failures, the bitmap becomes full.
The next call to acpm_prepare_xfer() would enter an infinite loop.
Fix this by utilizing the kernel's optimized bitmap search functions
(find_next_zero_bit / find_first_zero_bit). If the pool is completely
exhausted, log the failure and return -EBUSY to allow the kernel to
fail gracefully instead of hanging.
Furthermore, drop the allocation loop entirely. Because
acpm_prepare_xfer() is strictly called under the 'tx_lock' mutex,
sequence number allocations are perfectly serialized. If
find_next_zero_bit() locates a free bit, a single
test_and_set_bit_lock() is mathematically guaranteed to succeed.
To enforce this locking invariant, wrap the allocation in a
WARN_ON_ONCE. If the atomic set fails, it indicates the driver's
mutex serialization is fundamentally broken. The warning generates a
stack trace for debugging, while returning -EIO immediately aborts the
transfer to prevent silent payload corruption.
Cc: stable@vger.kernel.org
Fixes: a88927b534 ("firmware: add Exynos ACPM protocol driver")
Closes: https://sashiko.dev/#/patchset/20260420-acpm-tmu-v3-0-3dc8e93f0b26%40linaro.org [1]
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Link: https://patch.msgid.link/20260505-acpm-fixes-sashiko-reports-v5-7-43b5ee7f1674@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Sashiko identified memory ordering races in [1].
The ACPM driver uses a globally shared 'bitmap_seqnum' to track
available sequence numbers. Even though threads now strictly free their
own sequence numbers, the allocation and freeing of these bits across
concurrent threads are effectively lockless operations and require
explicit LKMM memory barriers.
Previously, the driver used plain bitwise operators (test_bit, set_bit,
clear_bit), which lack ordering guarantees. This creates two race
conditions on weakly ordered architectures like ARM64:
1. Polling Release Violation: The polling thread copies its payload and
calls clear_bit(). Without a release barrier, the CPU can reorder
the memory operations, making the cleared bit globally visible
before the payload reads have fully completed.
2. TX Acquire Violation: The TX thread loops on test_bit(), calls
set_bit(), and then wipes the payload buffer via memset(). Without
an acquire barrier, the CPU can speculatively execute the memset()
before the bit is safely and formally claimed.
If these reorderings overlap, a new TX thread can claim the sequence
number and overwrite the buffer while the original polling thread is
still actively reading from it.
Fix this by upgrading the bitwise operators. Wrap the TX allocation in
test_and_set_bit_lock() to establish formal LKMM Acquire semantics, and
pair it with clear_bit_unlock() in the polling path to enforce Release
semantics.
Cc: stable@vger.kernel.org
Fixes: a88927b534 ("firmware: add Exynos ACPM protocol driver")
Closes: https://sashiko.dev/#/patchset/20260423-acpm-fixes-sashiko-reports-v1-0-2217b790925e%40linaro.org [1]
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Link: https://patch.msgid.link/20260505-acpm-fixes-sashiko-reports-v5-6-43b5ee7f1674@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Sashiko identified severe races in the polling state machine [1].
In the ACPM driver's polling mode, threads waited for responses by
monitoring the globally shared 'bitmap_seqnum'. This caused false
timeouts because if a thread processed its response and freed the
sequence number, a concurrent TX thread could immediately reallocate
it before the polling thread woke up.
Additionally, the driver suffered from a cross-thread Use-After-Free
(UAF) preemption race. Previously, acpm_get_rx() cleared the sequence
number of whichever RX message it drained from the hardware queue. This
meant Thread A could globally free Thread B's sequence slot while
Thread B was asleep. A new Thread C could then steal the slot,
overwrite the buffer, and leave Thread B to wake up to corrupted state
or a timeout.
Fix this by rewriting the polling state machine:
1. Decouple polling from the global allocator by introducing a per-slot
'completed' flag, synchronized via smp_store_release() and
smp_load_acquire().
2. Strip acpm_get_saved_rx() out of acpm_get_rx() to make it a pure
queue-draining function. Introduce a 'native_match' boolean argument
which evaluates to true only if the thread natively processed its
own sequence number during the call. This explicitly informs the
polling loop whether it must retrieve its payload from the
cross-thread cache.
3. Centralize the cache fallback and sequence number free (clear_bit)
inside the polling loop. Crucially, the free operation now strictly
targets the thread's own TX sequence number (xfer->txd[0]), rather
than the drained RX sequence number. This enforces strict ownership:
a thread only ever frees its own allocated sequence slot, and only
at the exact moment it completes its poll, eliminating the UAF
window.
Furthermore, explicitly guard the 'native_match' assignment with an
if (rx_seqnum == tx_seqnum) check, even for zero-length (no payload)
responses. While an unguarded assignment wouldn't crash (because the
cache fallback acpm_get_saved_rx() safely returns early on zero-length
transfers) doing so would "lie" to the state machine. If a thread
drained the queue and found another thread's zero-length message,
setting native_match = true would falsely convince the polling loop
that it natively handled its own response. Maintaining a rigorous state
machine requires that native_match is only set when a thread explicitly
processes its own sequence number.
Cc: stable@vger.kernel.org
Fixes: a88927b534 ("firmware: add Exynos ACPM protocol driver")
Closes: https://sashiko.dev/#/patchset/20260429-acpm-fixes-sashiko-reports-v3-0-47cf74ab09ad%40linaro.org [1]
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Link: https://patch.msgid.link/20260505-acpm-fixes-sashiko-reports-v5-5-43b5ee7f1674@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
kconfiglint reports:
K002: config TEGRA_BPMP selects visible symbol TEGRA_IVC which has
dependencies
TEGRA_IVC was originally introduced in
commit ca791d7f42 ("firmware: tegra:
Add IVC library") as a user-visible
bool with a prompt ("Tegra IVC protocol"). At that time, TEGRA_BPMP
depended on TEGRA_IVC, requiring users to manually enable it.
Recently,
commit 78eb18020a ("firmware: tegra: Fix IVC dependency problems")
recognized that TEGRA_IVC is library code that should be activated via
`select` rather than user selection. That commit changed TEGRA_BPMP from
`depends on TEGRA_IVC` to `select TEGRA_IVC`, and restricted TEGRA_IVC's
prompt to only appear under COMPILE_TEST
(`bool "Tegra IVC protocol" if COMPILE_TEST`). The commit message
explicitly states: "The IVC code is library code that other drivers need to
select if they need that library."
However, the `if COMPILE_TEST` qualifier still leaves TEGRA_IVC as a
technically visible symbol, triggering K002 when TEGRA_BPMP selects it.
Since TEGRA_IVC depends on ARCH_TEGRA, it cannot be independently enabled
under COMPILE_TEST without ARCH_TEGRA anyway, limiting the value of the
standalone COMPILE_TEST path. TEGRA_BPMP itself provides adequate
COMPILE_TEST coverage for the IVC library through its own dependency chain.
Complete the transition to a pure library symbol by removing the prompt
entirely, making TEGRA_IVC a hidden bool activated only via select from
TEGRA_BPMP. This is consistent with the intent expressed in 78eb18020a.
Assisted-by: Claude:claude-opus-4-6 kconfiglint
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Register nvmem lookups in tegra_fuse_probe(), after the nvmem device has
been registered, since they can only be used after the nvmem device is
registered.
Signed-off-by: Kartik Rajput <kkartik@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Currently the kernel relies on a global variable to reference the PMC
context. Use an explicit lookup for the PMC and pass that to the public
PMC APIs.
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Currently the kernel relies on a global variable to reference the PMC
context. Use an explicit lookup for the PMC and pass that to the public
PMC APIs.
Acked-by: Manivannan Sadhasivam <mani@kernel.org>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Currently the kernel relies on a global variable to reference the PMC
context. Use an explicit lookup for the PMC and pass that to the public
PMC APIs.
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Currently the kernel relies on a global variable to reference the PMC
context. Use an explicit lookup for the PMC and pass that to the public
PMC APIs.
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Currently the kernel relies on a global variable to reference the PMC
context. Use an explicit lookup for the PMC and pass that to the public
PMC APIs.
Acked-by: Danilo Krummrich <dakr@kernel.org>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Currently the kernel relies on a global variable to reference the PMC
context. Use an explicit lookup for the PMC and pass that to the public
PMC APIs.
Acked-by: Damien Le Moal <dlemoal@kernel.org>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Peter sadly passed away a while ago, so I'll be taking over as contact
for this ABI documentation.
Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Peter sadly passed away a while back. Paul did a much better job at
finding the right words to mourn this loss than I ever could, so I will
leave this link here:
https://lore.kernel.org/lkml/alpine.DEB.2.21.999.2407240345480.11116@utopia.booyaka.com/T/#u
Co-developed-by: Paul Walmsley <pjw@kernel.org>
Signed-off-by: Paul Walmsley <pjw@kernel.org>
Co-developed-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Co-developed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Extend the tegra264_mc_clients table to cover the full set of memory
clients exposed by the SoC. The client name is used for MC fault
reporting. Clients managed by the BPMP bandwidth manager additionally
carry their bpmp_id and type.
Entries in tegra264_mc_clients[] are sorted to match the order of
the override and security register offsets used in previous SoCs.
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Link: https://patch.msgid.link/20260518124306.2071481-4-sumitg@nvidia.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
