linux.git/drivers/memory/tegra, branch v7.2-rc1

Merge tag 'soc-drivers-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2026-06-17T18:21:40+00:00

Pull SoC driver updates from Arnd Bergmann:
 "There are a few added drivers, but mostly the normal maintenance to
  drivers for firmware, memory controller and other soc specific
  hardware:

   - The NXP QuickEngine gets modern MSI support, which allows some
     cleanups to the GICv3 irqchip chip driver

   - A new SoC specific driver for the Renesas R-Car MFIS unit is added,
     encapsulating support for the on-chip mailbox and hwspinlock
     implementations that are not easily separated into individual
     drivers

   - The Qualcomm SoC drivers add support for additional SoC
     implementations, and flexibility around power management for the
     serial-engine driver as well as probing the LLCC driver using
     custom hardware descriptions inside of the device itself.

   - Added support for the Samsung thermal management unit

   - A cleanup to the Tegra 'PMC' driver interfaces to remove legacy
     APIs and allow multiple PMC instances everywhere.

   - Updates to the TI SCI and KNAS drivers to improve suspend/resume
     support.

   - Minor driver changes for mediatek, xilinx, allwinner, aspeed,
     tegra, broadcom, amd, microchip and starfive specific drivers

   - Memory controller updates for Tegra and Renesas for additional SoC
     types and other improvements.

   - Firmware driver updates for Arm FF-A, SMCCC and SCMI interfaces, to
     update driver probing, object lifetimes and address minor bugs"

* tag 'soc-drivers-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (189 commits)
  Revert "firmware: zynqmp: Add dynamic CSU register discovery and sysfs interface"
  Revert "Documentation: ABI: add sysfs interface for ZynqMP CSU registers"
  memory: tegra234: drop dead NULL check in tegra234_mc_icc_aggregate()
  memory: tegra264: drop redundant tegra264_mc_icc_aggregate()
  memory: tegra186-emc: stop borrowing MC aggregate hook for EMC
  soc: aspeed: cleanup dead default for ASPEED_SOCINFO
  firmware: tegra: bpmp: Add support for multi-socket platforms
  firmware: tegra: bpmp: Propagate debugfs errors
  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
  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
  ...

memory: tegra234: drop dead NULL check in tegra234_mc_icc_aggregate()

2026-06-09T15:00:30+00:00

In tegra234_mc_icc_aggregate(), the 'if (mc)' check inside the
CPU-cluster branch is always true.  'mc' was already dereferenced
via 'mc->bwmgr_mrq_supported' a few lines above, so if it were NULL
the function would have faulted there.  Drop the redundant check.

Reported-by: Jon Hunter 
Signed-off-by: Sumit Gupta 
Reviewed-by: Jon Hunter 
Tested-by: Jon Hunter 
Link: https://patch.msgid.link/20260527140127.49172-4-sumitg@nvidia.com
Signed-off-by: Krzysztof Kozlowski

memory: tegra264: drop redundant tegra264_mc_icc_aggregate()

2026-06-09T15:00:30+00:00

tegra264_mc_icc_aggregate() does nothing on top of icc_std_aggregate
except an early return on !mc->bwmgr_mrq_supported.
tegra264_mc_icc_set() already returns early on the same condition,
before reading any of the aggregated avg_bw / peak_bw values.  This
makes the early return in aggregate() redundant.  So, set
tegra264_mc_icc_ops.aggregate to icc_std_aggregate and drop the
helper.

Reported-by: Jon Hunter 
Signed-off-by: Sumit Gupta 
Reviewed-by: Jon Hunter 
Tested-by: Jon Hunter 
Link: https://patch.msgid.link/20260527140127.49172-3-sumitg@nvidia.com
Signed-off-by: Krzysztof Kozlowski

memory: tegra186-emc: stop borrowing MC aggregate hook for EMC

2026-06-09T15:00:30+00:00

tegra186_emc_interconnect_init() copies the MC's ICC aggregate hook
into the EMC provider.  That hook (tegra234_mc_icc_aggregate /
tegra264_mc_icc_aggregate) uses container_of() to recover 'mc',
which is only valid when the icc_provider is embedded in struct
tegra_mc.  For an EMC node the provider is embedded in struct
tegra186_emc, so 'mc' points into unrelated memory.

This stayed harmless until commit faafd6ca7e6e ("memory: tegra:
make icc_set_bw return zero if BWMGR not supported") added an
unconditional read of mc->bwmgr_mrq_supported at the top of the
hook.  UBSAN catches the stray load on every EMC aggregation:

  UBSAN: invalid-load in drivers/memory/tegra/tegra234.c:1104:9
  load of value 112 is not a valid value for type '_Bool'

No functional impact in practice, since the hook's only other mc
dereference (mc->num_channels) sits inside a
TEGRA_ICC_MC_CPU_CLUSTER* branch that EMC nodes never enter.

Fix this by setting the EMC provider's aggregate hook to
icc_std_aggregate, instead of borrowing the MC's hook.  The MC
providers continue using their own aggregate hooks, where
container_of() correctly resolves to struct tegra_mc.

Reported-by: Jon Hunter 
Fixes: 9a38cb27668e ("memory: tegra: Add interconnect support for DRAM scaling in Tegra234")
Signed-off-by: Sumit Gupta 
Reviewed-by: Jon Hunter 
Tested-by: Jon Hunter 
Link: https://patch.msgid.link/20260527140127.49172-2-sumitg@nvidia.com
Signed-off-by: Krzysztof Kozlowski

thermal/of: Rename the devm_thermal_of_cooling_device_register() function

2026-06-03T07:12:53+00:00

To clarify that the function operates on child nodes, rename:

          devm_thermal_of_cooling_device_register()
	                     |
			     v
       devm_thermal_of_child_cooling_device_register()

Used the command:

     	 find . -type f -name '*.[ch]' -exec \
	 sed -i 's/devm_thermal_of_cooling_device_register/\
	 devm_thermal_of_child_cooling_device_register/g' {} \;

Did not used clang-format-diff because it does not indent correctly
and checkpatch complained. Manually reindented to make checkpatch
happy

This prepares for upcoming support of cooling devices identified by
an ID rather than device tree child nodes.

No functional change.

Signed-off-by: Daniel Lezcano 
Signed-off-by: Daniel Lezcano 
Reviewed-by: Lukasz Luba 
Acked-by: Rafael J. Wysocki (Intel) 
Link: https://patch.msgid.link/20260526140802.1059293-18-daniel.lezcano@oss.qualcomm.com

memory: tegra264: Add full set of MC clients

2026-05-27T12:50:19+00:00

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 
Link: https://patch.msgid.link/20260518124306.2071481-4-sumitg@nvidia.com
Signed-off-by: Krzysztof Kozlowski

memory: tegra264: Skip clients without bpmp_id or type

2026-05-27T12:50:17+00:00

Some MC clients are present in tegra264_mc_clients[] only for
fault-log naming and have no .bpmp_id or .type assigned. Skip
forwarding bandwidth requests to BPMP for such clients in
tegra264_mc_icc_set().

Signed-off-by: Sumit Gupta 
Link: https://patch.msgid.link/20260518124306.2071481-2-sumitg@nvidia.com
Signed-off-by: Krzysztof Kozlowski

memory: tegra114-emc: Simplify tegra114_emc_interconnect_init() error message

2026-05-14T16:35:31+00:00

Use dev_err_probe() in tegra114_emc_interconnect_init() to make code a
bit simpler.  It's preferred form of printing error messages during
probe, even if actual call cannot return EPROBE_DEFER.

Signed-off-by: Krzysztof Kozlowski 
Link: https://patch.msgid.link/20260504190004.747509-4-krzysztof.kozlowski@oss.qualcomm.com

memory: tegra114-emc: Do not print error on icc_node_create() failure

2026-05-14T16:35:30+00:00

icc_node_create() is alloc-like function, so no need to print error
messages on its failure.  Dropping one label makes the code a bit
simpler.

Signed-off-by: Krzysztof Kozlowski 
Link: https://patch.msgid.link/20260504190004.747509-3-krzysztof.kozlowski@oss.qualcomm.com

memory: tegra: Fix possible null pointer dereference

2026-05-13T19:15:51+00:00

The function tegra114_emc_find_timing() has the possibility of returning
null and it's return value 'timing' is dereferenced before it is
checked for null.

Place dereference after null pointer check.

Detected by Smatch:
drivers/memory/tegra/tegra114-emc.c:520 tegra114_emc_prepare_timing_change()
warn: variable dereferenced before check 'timing' (see line 515)

Fixes: dce208b5405f4 ("memory: tegra: Add Tegra114 EMC driver")
Signed-off-by: Ethan Tidmore 
Acked-by: Thierry Reding 
Link: https://patch.msgid.link/20260508015716.652347-1-ethantidmore06@gmail.com
Reported-by: kernel test robot 
Reported-by: Dan Carpenter 
Closes: https://lore.kernel.org/r/202605100506.wJFmI6IM-lkp@intel.com/
Signed-off-by: Krzysztof Kozlowski