QCS615 platform requires non-default logical-to-physical lane mapping due
to its unique hardware routing. Unlike the standard mapping sequence
<0 1 2 3>, QCS615 uses <3 2 0 1>, which necessitates explicit
configuration via the data-lanes property in the device tree. This ensures
correct signal routing between the DP controller and PHY.
For partial definitions, fill remaining lanes with unused physical lanes
in ascending order.
Signed-off-by: Xiangxu Yin <xiangxu.yin@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/675645/
Link: https://lore.kernel.org/r/20250919-add-displayport-support-for-qcs615-platform-v5-14-eae6681f4002@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
To support high-resolution cases that exceed the width limitation of
a pair of SSPPs, or scenarios that surpass the maximum MDP clock rate,
additional pipes are necessary to enable parallel data processing
within the SSPP width constraints and MDP clock rate.
Request 4 mixers and 4 DSCs for high-resolution cases where both DSC
and dual interfaces are enabled. More use cases can be incorporated
later if quad-pipe capabilities are required.
Signed-off-by: Jun Nie <jun.nie@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/675418/
Link: https://lore.kernel.org/r/20250918-v6-16-rc2-quad-pipe-upstream-4-v16-10-ff6232e3472f@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
When a zero ASCE is passed to the __ptep_rdp() inline assembly, the
generated instruction should have the R3 field of the instruction set to
zero. However the inline assembly is written incorrectly: for such cases a
zero is loaded into a register allocated by the compiler and this register
is then used by the instruction.
This means that selected TLB entries may not be flushed since the specified
ASCE does not match the one which was used when the selected TLB entries
were created.
Fix this by removing the asce and opt parameters of __ptep_rdp(), since
all callers always pass zero, and use a hard-coded register zero for
the R3 field.
Fixes: 0807b85652 ("s390/mm: add support for RDP (Reset DAT-Protection)")
Cc: stable@vger.kernel.org
Reviewed-by: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Document CSI HW block found in Tegra20 and Tegra30 SoC.
The #nvidia,mipi-calibrate-cells is not an introduction of property, such
property already exists in nvidia,tegra114-mipi.yaml and is used in
multiple device trees. In case of Tegra30 and Tegra20 CSI block combines
mipi calibration function and CSI function, in Tegra114+ mipi calibration
got a dedicated hardware block which is already supported. This property
here is used to align with mipi-calibration logic used by Tegra114+.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
GPIOs 44-47 were previously reserved, preventing Linux from accessing
SPI11 (qupv1_se3). Since there is no TZ use case for these pins on Linux,
they can be safely unreserved. Removing them from the reserved list
resolves the SPI11 access issue for Linux.
Signed-off-by: Xueyao An <xueyao.an@oss.qualcomm.com>
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20251105054548.2347569-1-xueyao.an@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
For BT use cases, pins are configured with pull-up state in sleep state
to avoid noise. If IRQ type is configured as level high and the GPIO line
is also in a high state, it causes continuous interrupt assertions leading
to an IRQ storm when wakeup irq enables at system suspend/runtime suspend.
Switching to edge-triggered interrupt (IRQ_TYPE_EDGE_FALLING) resolves
this by only triggering on state transitions (high-to-low) rather than
maintaining sensitivity to the static level state, effectively preventing
the continuous interrupt condition and eliminating the wakeup IRQ storm.
Fixes: 9380e0a1d4 ("arm64: dts: qcom: qrb2210-rb1: add Bluetooth support")
Signed-off-by: Praveen Talari <praveen.talari@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20251110101043.2108414-2-praveen.talari@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
The author failed to document the dependencies of this commit, resulting
in a regression.
This reverts commit 03e928442d.
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
For each supported ISP block type the v4l2-isp framework expects
one handler and one block type info.
Static assert that the array of handlers is of the same size of the
array of block types info.
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The v4l2_isp_params_block_info structure contains validation information
that apply to a block -type- and not only to a specific ISP block
implementation.
Clarify this by renaming v4l2_isp_params_block_info in
v4l2_isp_params_block_type_info and update the documentation and the
users of v4l2-isp accordingly.
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Add an entry to the MAINTAINERS file for the rzv2h-ivc driver
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Add a driver for the Input Video Control block in an RZ/V2H(P) SoC
which feeds data into the Arm Mali-C55 ISP.
[ivc: Remove check on buffers list in start_streaming]
[ivc: put_autosuspend() implies mark_last_busy()]
[media: rzv2h-ivc: Do not delay frame completion]
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
[hverkuil: remove deprecated vb2_ops_wait_prepare/finish callbacks]
[hverkuil: replace "select PM" by "depends on PM"]
The RZ/V2H(P) SoC has a block called the Input Video Control block which
feeds image data into the Image Signal Processor. Add dt bindings to
describe the IVC.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Add a new code file to the mali-c55 driver that registers an output
video node for userspace to queue buffers of parameters to. Handlers
are included to program the statistics generation plus the white
balance, black level correction and mesh shading correction blocks.
Update the rest of the driver to register and link the new video node
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Acked-by: Nayden Kanchev <nayden.kanchev@arm.com>
Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
[hverkuil: remove deprecated vb2_ops_wait_prepare/finish callbacks]
Add a new V4L2 meta format code for the Mali-C55 parameters.
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Nayden Kanchev <nayden.kanchev@arm.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Add documentation explaining the ability to capture statistics from
the mali-c55 driver's new V4L2 device, as well as the various tap
points from which those statistics can be drawn in the ISP's
processing flow. Additionally add a page detailing the new V4L2
meta format for the mali-c55 statistics.
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Nayden Kanchev <nayden.kanchev@arm.com>
Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Add a new code file to govern the 3a statistics capture node.
On ISP_START, fill the stats buffer by reading out the metering space
in the ISP's memory. This is done for the non-active config just as
the dma transfer of the registers is. To acheive that, move the
checking of the current config outside of mali_c55_swap_next_config()
so we can use it for both functions.
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Acked-by: Nayden Kanchev <nayden.kanchev@arm.com>
Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
[hverkuil: remove deprecated vb2_ops_wait_prepare/finish callbacks]
Describe the format of the 3A statistics buffers in the userspace API
header for the mali-c55 ISP.
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Nayden Kanchev <nayden.kanchev@arm.com>
Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Add a new meta format for the Mali-C55 ISP's 3A Statistics along
with a new descriptor entry.
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Nayden Kanchev <nayden.kanchev@arm.com>
Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Add a documentation page for the mali-c55 driver, which gives a brief
overview of the hardware and explains how to use the driver's capture
devices and the crop/scaler functions.
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Nayden Kanchev <nayden.kanchev@arm.com>
Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Add a driver for Arm's Mali-C55 Image Signal Processor. The driver is
V4L2 and Media Controller compliant and creates subdevices to manage
the ISP itself, its internal test pattern generator as well as the
crop, scaler and output format functionality for each of its two
output devices.
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Acked-by: Nayden Kanchev <nayden.kanchev@arm.com>
Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
[hverkuil: remove deprecated vb2_ops_wait_prepare/finish callbacks]
Add definitions and documentation for the custom control that will
be needed by the Mali-C55 ISP driver. This will be a read only
bitmask of the driver's capabilities, informing userspace of which
blocks are fitted and which are absent.
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The Mali-C55 requires input data be in 20-bit format, MSB aligned.
Add some new media bus format macros to represent that input format.
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The Mali-C55 ISP by ARM requires 20-bits per colour channel input on
the bus. Add a new media bus format code to represent it.
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Nayden Kanchev <nayden.kanchev@arm.com>
Co-developed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Add to the driver-api documentation the v4l2-isp.h types and
helpers documentation.
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Michael Riesch <michael.riesch@collabora.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Convert c3-isp-params.c to use the helpers defined in v4l2-isp.h
to perform validation of a ISP parameters buffer.
Reviewed-by: Keke Li <keke.li@amlogic.com>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Convert rkisp1-params.c to use the helpers defined in v4l2-isp.h
to perform validation of a ISP parameters buffer.
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Add to the V4L2 framework helper functions to support drivers when
validating a buffer of V4L2 ISP parameters.
Driver shall use v4l2_isp_params_validate_buffer_size() to verify the
size correctness of the data received from userspace, and after having
copied the data to a kernel-only memory location, complete the
validation by calling v4l2_isp_params_validate_buffer().
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Michael Riesch <michael.riesch@collabora.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
With the introduction of common types for extensible parameters
format, convert the c3-isp-config.h header to use the new types.
Factor-out the documentation that is now part of the common header
and only keep the driver-specific on in place.
The conversion to use common types doesn't impact userspace as the
new types are either identical to the ones already existing in the
C3 ISP uAPI or are 1-to-1 type convertible.
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Keke Li <keke.li@amlogic.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
With the introduction of common types for extensible parameters
format, convert the rkisp1-config.h header to use the new types.
Factor out the documentation that is now part of the common header
and only keep the driver-specific on in place.
The conversion to use common types doesn't impact userspace as the
new types are either identical to the ones already existing in the
RkISP1 uAPI or are 1-to-1 type convertible.
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Michael Riesch <michael.riesch@collabora.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Introduce v4l2-isp.h in the Linux kernel uAPI.
The header includes types for generic ISP configuration parameters
and will be extended in the future with support for generic ISP statistics
formats.
Generic ISP parameters support is provided by introducing two new
types that represent an extensible and versioned buffer of ISP
configuration parameters.
The v4l2_params_buffer represents the container for the ISP
configuration data block. The generic type is defined with a 0-sized
data member that the ISP driver implementations shall properly size
according to their capabilities. The v4l2_params_block_header structure
represents the header to be prepend to each ISP configuration block.
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Michael Riesch <michael.riesch@collabora.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Merge series from Jun Guo <jun.guo@cixtech.com>:
The Cadence SPI IP supports configurable FIFO data widths during
integration. On some SoCs, the FIFO data width is designed to be 16 or
32 bits at the chip design stage. However, the current driver only
supports communication with an 8-bit FIFO data width. Therefore, these
patches are added to enable the driver to support communication with
16-bit and 32-bit FIFO data widths.
The current EPP, ISP and MPE schemas are largely compatible with Tegra114+,
requiring only minor adjustments. Additionally, the TSEC schema for the
Security engine, which is available from Tegra114 onwards, is included.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
If a given governor metric falls below a certain value (8 for
DECAY_SHIFT equal to 3), it will not decay any more due to the
simplistic decay implementation. This may in some cases lead to
subtle inconsistencies in the governor behavior, so change the
decay implementation to take it into account and set the metric
at hand to 0 in that case.
Suggested-by: Christian Loehle <christian.loehle@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Christian Loehle <christian.loehle@arm.com>
Tested-by: Christian Loehle <christian.loehle@arm.com>
Link: https://patch.msgid.link/2819353.mvXUDI8C0e@rafael.j.wysocki
Two local variables in teo_update() are defined as u64, but their
values are then compared with s64 values, so it is more consistent
to use s64 as their data type.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Christian Loehle <christian.loehle@arm.com>
Tested-by: Christian Loehle <christian.loehle@arm.com>
Link: https://patch.msgid.link/3026616.e9J7NaK4W3@rafael.j.wysocki
The last no_poll parameter of teo_find_shallower_state() is always
false, so drop it.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Christian Loehle <christian.loehle@arm.com>
Tested-by: Christian Loehle <christian.loehle@arm.com>
Link: https://patch.msgid.link/2253109.irdbgypaU6@rafael.j.wysocki
When the target residency of the current candidate idle state is
greater than the expected time till the closest timer (the sleep
length), it does not matter whether or not the tick has already been
stopped or if it is going to be stopped. The closest timer will
trigger anyway at its due time, so if an idle state with target
residency above the sleep length is selected, energy will be wasted
and there may be excess latency.
Of course, if the closest timer were canceled before it could trigger,
a deeper idle state would be more suitable, but this is not expected
to happen (generally speaking, hrtimers are not expected to be
canceled as a rule).
Accordingly, the teo_state_ok() check done in that case causes energy to
be wasted more often than it allows any energy to be saved (if it allows
any energy to be saved at all), so drop it and let the governor use the
teo_find_shallower_state() return value as the new candidate idle state
index.
Fixes: 21d28cd2fa ("cpuidle: teo: Do not call tick_nohz_get_sleep_length() upfront")
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Christian Loehle <christian.loehle@arm.com>
Tested-by: Christian Loehle <christian.loehle@arm.com>
Link: https://patch.msgid.link/5955081.DvuYhMxLoT@rafael.j.wysocki
Commit 4acbfcf11c ("ASoC: dt-bindings: consolidate simple audio codec to
trivial-codec.yaml") aggregates a few sound device-tree bindings, i.e., txt
and yaml files, into a common trivial-codec.yaml, but misses to adjust the
references in ANALOG DEVICES INC ASOC CODEC DRIVERS, ARM/APPLE MACHINE
SOUND DRIVERS, NXP TFA9879 DRIVER and WOLFSON MICROELECTRONICS DRIVERS,
which refer to files removed by the commit above.
Make these sections refer to trivial-codec.yaml, in order to inform the
maintainers on changes to the device-tree binding relevant to the
hardware drivers.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@redhat.com>
Link: https://patch.msgid.link/20251114113713.231513-1-lukas.bulwahn@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Introduce driver support for the Microchip FPGA CoreSPI IP.
This driver supports only Motorola SPI mode and frame size of 8-bits.
TI/NSC modes and wider frame sizes are not currently supported.
Signed-off-by: Prajna Rajendra Kumar <prajna.rajendrakumar@microchip.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20251114104545.284765-4-prajna.rajendrakumar@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Add device tree bindings for Microchip's CoreSPI controller.
CoreSPI is a "soft" IP core intended for FPGA implementations. Its
configurations are set in Libero. These properties represent
non-discoverable configurations determined by Verilog parameters to the
IP.
Signed-off-by: Prajna Rajendra Kumar <prajna.rajendrakumar@microchip.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20251114104545.284765-3-prajna.rajendrakumar@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
