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Sometimes the sensor gets stuck and enters a condition in which it pulls
SDA low, thus making the entire i2c bus unusable.
This problem is mitigated by activating a 1ms watchdog implemented in
the sensor.
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add the bma220_i2c module.
Note that this kernel module transparently shifts all register addresses
1 bit to the left, so all functions will operate based on the SPI memory
map.
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Clean up the code a bit by using a find_match_table function.
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Populate buffer timestamps in trigger handler since not all
triggers can run the top half handler that provides
pf->timestamp.
Fixes failing unit test that triggers based on the INT signal.
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Switch to regmap API.
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Bring all configuration registers to default values during
device probe().
Remove trivial code duplication regarding bma220_power() in
_init()
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add devm_regulator_bulk_get_enable() to device probe().
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add open firmware entry to the spi driver.
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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In preparation for the i2c module, move the original code into multiple
source files without any other functional change.
Create the additional bma220_core module which currently is not
providing an abstracted bus type (this will change with the regmap
patch).
Fix a few includes in the context of this patch.
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Tweak includes based on requirements.
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> #added linux/errno.h
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Move bma220_power() before bma220_init() as a precursor to a
patch that removes code duplication.
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Provide functions easier access to device struct.
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Fix checkpatch warning about use of "GPL v2" license:
Prefer "GPL" over "GPL v2" - see commit bf7fbeeae6db
("module: Cure the MODULE_LICENSE "GPL" vs. "GPL v2" bogosity")
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Do not return error if the chip id being read is not the expected one.
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Remove incorrect use of kernel-doc marking.
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Remove drivers/staging/iio/frequency/ad9834.h header file
because it contains nothing except the include guards.
Signed-off-by: Taimoor Zaeem <taimoorzaeem@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add support for the A/D 12-Bit successive approximation converters found
in the Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs.
RZ/T2H has two ADCs with 4 channels and one with 6.
RZ/N2H has two ADCs with 4 channels and one with 15.
Conversions can be performed in single or continuous mode. Result of the
conversion is stored in a 16-bit data register corresponding to each
channel.
The conversions can be started by a software trigger, a synchronous
trigger (from MTU or from ELC) or an asynchronous external trigger (from
ADTRGn# pin).
Only single mode with software trigger is supported for now.
Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Document the A/D 12-Bit successive approximation converters found in the
Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs.
RZ/T2H has two ADCs with 4 channels and one with 6.
RZ/N2H has two ADCs with 4 channels and one with 15.
Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Make use of the cleanup API so that we can simplify some code paths.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Update the ad2s1210_read_label() and ad2s1210_read_event_label() functions
to use sysfs_emit() for generating labels.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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sysfs_emit()
Update the hinge_read_label() function to use sysfs_emit() for generating
labels.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Update the rradc_read_label() function to use sysfs_emit() for generating
labels.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Update the pac1921_read_label() function to use sysfs_emit() for
generating labels.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Update the mt6360_adc_read_label() function to use sysfs_emit() for
generating labels.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Update the read_label() function to use sysfs_emit() for generating
labels.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Update the mcp3564_read_label() function to use sysfs_emit() for
generating labels.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Marius Cristea <marius.cristea@microchip.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Update the ad7768_read_label() function to use sysfs_emit(() for
generating labels.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Update the ad4030_read_label() function to use sysfs_emit() for generating
labels.
Signed-off-by: Nuno Sá <nuno.sal@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Corrected a spelling mistake in the ltr390 driver:
'recieve_buffer' was renamed to 'receive_buffer'.
This improves code readibility without changing functionality.
Signed-off-by: Sameeksha Sankpal <sameekshasankpal@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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When the device is in ACTIVE mode the temperature and pressure measurements
are collected with a frequency determined by the ST[3:0] bits of CTRL_REG2
register.
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Antoni Pokusinski <apokusinski01@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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MPL3115 sensor features a "data ready" interrupt which indicates the
presence of new measurements.
Signed-off-by: Antoni Pokusinski <apokusinski01@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Rename the bitfield macros of CTRL_REG1, so that their names clearly
indicate their relation to CTRL_REG1.
This is a preparation for introducing the support for the DRDY interrupt
which requires the usage of other control registers.
Signed-off-by: Antoni Pokusinski <apokusinski01@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Factor out the code responsible for collecting data for the triggered
buffer from the trigger handler into a separate function.
Signed-off-by: Antoni Pokusinski <apokusinski01@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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MPL3115 is an I2C pressure and temperature sensor. It features 2
interrupt lines which can be configured to indicate events such as data
ready or pressure/temperature threshold reached.
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Antoni Pokusinski <apokusinski01@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Change the allocation strategy of the 8 SETUP registers from a least-
recently-used (LRU) to a first-come-first-served basis.
The AD7124 chips can have up to 16 channels enabled at a time in the
sequencer for buffered reads, but only have 8 SETUP configurations
(namely the OFFSET, GAIN, CONFIG and FILTER registers) that must be
shared among the 16 channels. This means some of the channels must use
the exact same configuration parameters so that they can share a single
SETUP group of registers. The previous LRU strategy did not keep track
of how many different configurations were requested at the same time,
so if there were more than 8 different configurations requested, some
channels would end up using the incorrect configuration because the slot
assigned to them would also be assigned to a different configuration
that wrote over it later.
Adding such tracking to solve this would make an already complex
algorithm even more complex. Instead we can replace it with a simpler
first-come-first-serve strategy. This makes it easy to track how many
different configurations are being requested at the same time. This
comes at the expense of slightly longer setup times for buffered reads
since all setup registers must be written each time when a buffered read
is enabled. But this is generally not considered a hot path where
performance is critical, so should be acceptable.
This new strategy also makes hardware debugging easier since SETUPs are
now assigned in a deterministic manner and in a logical order.
Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Use the same .ext_info for the temperature channel as for the voltage
channels. In the ADC, these all go though a mux to select the source
and otherwise operate the same.
These attributes probably won't be used much, but since it is trivial
to add this, we might as well include them.
Signed-off-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Use devm_mutex_init() since it brings some benefits when
CONFIG_DEBUG_MUTEXES is enabled.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Cross-references to iio_tools.rst (IIO Interfacing Tools) and
iio_devbuf.rst (Industrial IIO device buffers) are shown in inline
code instead. Convert them to proper cross-references.
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add ABI documentation for accelerometer event-related sysfs attributes
exposed by the bmi270 driver. These include threshold, period, and
enable controls for adaptive magnitude (any-motion) and rate of change
(no-motion) event detection.
Signed-off-by: Gustavo Silva <gustavograzs@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Any-motion event can be enabled on a per-axis basis and triggers a
combined event when motion is detected on any axis.
No-motion event is triggered if the rate of change on all axes falls
below a specified threshold for a configurable duration. A fake channel
is used to report this event.
Threshold and duration can be configured from userspace.
Signed-off-by: Gustavo Silva <gustavograzs@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Correct the debug log format string from "pdb_addr" -> "pbl_addr"
to match the actual variable name.
Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Link: https://patch.msgid.link/20250929091102.50384-1-alok.a.tiwari@oracle.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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The current error handling path in bnxt_re_destroy_gsi_sqp() could lead
to a resource leak. When bnxt_qplib_destroy_qp() fails, the function
jumps to the 'fail' label and returns immediately, skipping the call
to bnxt_qplib_free_qp_res().
Continue the resource teardown even if bnxt_qplib_destroy_qp() fails,
which aligns with the driver's general error handling strategy and
prevents the potential leak.
Fixes: 8dae419f9ec73 ("RDMA/bnxt_re: Refactor queue pair creation code")
Signed-off-by: YanLong Dai <daiyanlong@kylinos.cn>
Link: https://patch.msgid.link/20250924061444.11288-1-daiyanlong@kylinos.cn
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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According to the ABI the units after application of scale and offset are
milli degree celsius for temperature thresholds and milli percent for
relative humidity thresholds. Currently the resulting units are degree
celsius for temperature thresholds and hysteresis and percent for relative
humidity thresholds and hysteresis. Change scale factor to fix this issue.
Fixes: 3ad0e7e5f0cb ("iio: humidity: hdc3020: add threshold events support")
Reported-by: Chris Lesiak <chris.lesiak@licorbio.com>
Reviewed-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Signed-off-by: Dimitri Fedrau <dimitri.fedrau@liebherr.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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According to the ABI the units after application of scale and offset are
milli degrees for temperature measurements and milli percent for relative
humidity measurements. Currently the resulting units are degree celsius for
temperature measurements and percent for relative humidity measurements.
Change scale factor to fix this issue.
Fixes: c9180b8e39be ("iio: humidity: Add driver for ti HDC302x humidity sensors")
Reported-by: Chris Lesiak <chris.lesiak@licorbio.com>
Suggested-by: Chris Lesiak <chris.lesiak@licorbio.com>
Reviewed-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Signed-off-by: Dimitri Fedrau <dimitri.fedrau@liebherr.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The `decimator` and `batch` fields of struct st_lsm6dsx_settings
are arrays indexed by sensor type, not by sensor hardware
identifier; moreover, the `batch` field is only used for the
accelerometer and gyroscope.
Change the array size for `decimator` from ST_LSM6DSX_MAX_ID to
ST_LSM6DSX_ID_MAX, and change the array size for `batch` from
ST_LSM6DSX_MAX_ID to 2; move the enum st_lsm6dsx_sensor_id
definition so that the ST_LSM6DSX_ID_MAX value is usable within
the struct st_lsm6dsx_settings definition.
Fixes: 801a6e0af0c6c ("iio: imu: st_lsm6dsx: add support to LSM6DSO")
Signed-off-by: Francesco Lavra <flavra@baylibre.com>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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hook_fault_code() is an ARM32-specific API. Guard it and related code with
CONFIG_ARM #ifdefs and remove the ARM arch dependency from Kconfig so the
driver can be compile tested on other architectures.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
[mani: dropped the ARM arch Kconfig dependency]
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linar.org>
Link: https://patch.msgid.link/20250925202738.2202195-1-helgaas@kernel.org
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On the Qualcomm Kaanapali platform the PCIe host is compatible with the
DWC controller present on the SM8550 platform.
Signed-off-by: Jingyi Wang <jingyi.wang@oss.qualcomm.com>
Signed-off-by: Qiang Yu <qiang.yu@oss.qualcomm.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20251015-kaanapali-pcie-upstream-v2-1-84fa7ea638a1@oss.qualcomm.com
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__ASSEMBLY__ is only defined by the Makefile of the kernel, so
this is not really useful for uapi headers (unless the userspace
Makefile defines it, too). Let's switch to __ASSEMBLER__ which
gets set automatically by the compiler when compiling assembly
code.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Guo Ren (Alibaba DAMO Academy) <guoren@kernel.org>
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While the GCC and Clang compilers already define __ASSEMBLER__
automatically when compiling assembly code, __ASSEMBLY__ is a
macro that only gets defined by the Makefiles in the kernel.
This can be very confusing when switching between userspace
and kernelspace coding, or when dealing with uapi headers that
rather should use __ASSEMBLER__ instead. So let's standardize on
the __ASSEMBLER__ macro that is provided by the compilers now.
This is a completely mechanical patch (done with a simple "sed -i"
statement).
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Guo Ren (Alibaba DAMO Academy) <guoren@kernel.org>
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RK3528 ships a PCIe Gen2x1 controller that operates in RC mode only.
Since the SoC has no separate MSI controller, the one integrated in the
DWC PCIe IP must be used, and thus its interrupt scheme is similar to
variants found in RK3562 and RK3576.
Older BSP code claimed its integrated MSI controller supports only 8
MSIs[1], but this has been changed in newer BSP[2] and testing proves
the controller works correctly with more than 8 MSIs allocated,
suggesting the controller should be compatible with the RK3568 variant.
Hence, document its compatible string.
Signed-off-by: Yao Zi <ziyao@disroot.org>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Link: https://github.com/rockchip-linux/kernel/blob/792a7d4273a5/drivers/pci/controller/dwc/pcie-dw-rockchip.c#L1610-L1613 # [1]
Link: https://github.com/rockchip-linux/kernel/blob/1ba51b059f25/drivers/pci/controller/dwc/pcie-dw-rockchip.c#L904-L906 # [2]
Link: https://patch.msgid.link/20250918153057.56023-2-ziyao@disroot.org
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