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Merge tag 'pci-v6.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull PCI updates from Bjorn Helgaas:
"Enumeration:
- Allow built-in drivers, not just modular drivers, to use async
initial probing (Lukas Wunner)
- Support Immediate Readiness even on devices with no PM Capability
(Sean Christopherson)
- Consolidate definition of PCIE_RESET_CONFIG_WAIT_MS (100ms), the
required delay between a reset and sending config requests to a
device (Niklas Cassel)
- Add pci_is_display() to check for "Display" base class and use it
in ALSA hda, vfio, vga_switcheroo, vt-d (Mario Limonciello)
- Allow 'isolated PCI functions' (multi-function devices without a
function 0) for LoongArch, similar to s390 and jailhouse (Huacai
Chen)
Power control:
- Add ability to enable optional slot clock for cases where the PCIe
host controller and the slot are supplied by different clocks
(Marek Vasut)
PCIe native device hotplug:
- Fix runtime PM ref imbalance on Hot-Plug Capable ports caused by
misinterpreting a config read failure after a device has been
removed (Lukas Wunner)
- Avoid creating a useless PCIe port service device for pciehp if the
slot is handled by the ACPI hotplug driver (Lukas Wunner)
- Ignore ACPI hotplug slots when calculating depth of pciehp hotplug
ports (Lukas Wunner)
Virtualization:
- Save VF resizable BAR state and restore it after reset (Michał
Winiarski)
- Allow IOV resources (VF BARs) to be resized (Michał Winiarski)
- Add pci_iov_vf_bar_set_size() so drivers can control VF BAR size
(Michał Winiarski)
Endpoint framework:
- Add RC-to-EP doorbell support using platform MSI controller,
including a test case (Frank Li)
- Allow BAR assignment via configfs so platforms have flexibility in
determining BAR usage (Jerome Brunet)
Native PCIe controller drivers:
- Convert amazon,al-alpine-v[23]-pcie, apm,xgene-pcie,
axis,artpec6-pcie, marvell,armada-3700-pcie, st,spear1340-pcie to
DT schema format (Rob Herring)
- Use dev_fwnode() instead of of_fwnode_handle() to remove OF
dependency in altera (fixes an unused variable), designware-host,
mediatek, mediatek-gen3, mobiveil, plda, xilinx, xilinx-dma,
xilinx-nwl (Jiri Slaby, Arnd Bergmann)
- Convert aardvark, altera, brcmstb, designware-host, iproc,
mediatek, mediatek-gen3, mobiveil, plda, rcar-host, vmd, xilinx,
xilinx-dma, xilinx-nwl from using pci_msi_create_irq_domain() to
using msi_create_parent_irq_domain() instead; this makes the
interrupt controller per-PCI device, allows dynamic allocation of
vectors after initialization, and allows support of IMS (Nam Cao)
APM X-Gene PCIe controller driver:
- Rewrite MSI handling to MSI CPU affinity, drop useless CPU hotplug
bits, use device-managed memory allocations, and clean things up
(Marc Zyngier)
- Probe xgene-msi as a standard platform driver rather than a
subsys_initcall (Marc Zyngier)
Broadcom STB PCIe controller driver:
- Add optional DT 'num-lanes' property and if present, use it to
override the Maximum Link Width advertised in Link Capabilities
(Jim Quinlan)
Cadence PCIe controller driver:
- Use PCIe Message routing types from the PCI core rather than
defining private ones (Hans Zhang)
Freescale i.MX6 PCIe controller driver:
- Add IMX8MQ_EP third 64-bit BAR in epc_features (Richard Zhu)
- Add IMX8MM_EP and IMX8MP_EP fixed 256-byte BAR 4 in epc_features
(Richard Zhu)
- Configure LUT for MSI/IOMMU in Endpoint mode so Root Complex can
trigger doorbel on Endpoint (Frank Li)
- Remove apps_reset (LTSSM_EN) from
imx_pcie_{assert,deassert}_core_reset(), which fixes a hotplug
regression on i.MX8MM (Richard Zhu)
- Delay Endpoint link start until configfs 'start' written (Richard
Zhu)
Intel VMD host bridge driver:
- Add Intel Panther Lake (PTL)-H/P/U Vendor ID (George D Sworo)
Qualcomm PCIe controller driver:
- Add DT binding and driver support for SA8255p, which supports ECAM
for Configuration Space access (Mayank Rana)
- Update DT binding and driver to describe PHYs and per-Root Port
resets in a Root Port stanza and deprecate describing them in the
host bridge; this makes it possible to support multiple Root Ports
in the future (Krishna Chaitanya Chundru)
- Add Qualcomm QCS615 to SM8150 DT binding (Ziyue Zhang)
- Add Qualcomm QCS8300 to SA8775p DT binding (Ziyue Zhang)
- Drop TBU and ref clocks from Qualcomm SM8150 and SC8180x DT
bindings (Konrad Dybcio)
- Document 'link_down' reset in Qualcomm SA8775P DT binding (Ziyue
Zhang)
- Add required PCIE_RESET_CONFIG_WAIT_MS delay after Link up IRQ
(Niklas Cassel)
Rockchip PCIe controller driver:
- Drop unused PCIe Message routing and code definitions (Hans Zhang)
- Remove several unused header includes (Hans Zhang)
- Use standard PCIe config register definitions instead of
rockchip-specific redefinitions (Geraldo Nascimento)
- Set Target Link Speed to 5.0 GT/s before retraining so we have a
chance to train at a higher speed (Geraldo Nascimento)
Rockchip DesignWare PCIe controller driver:
- Prevent race between link training and register update via DBI by
inhibiting link training after hot reset and link down (Wilfred
Mallawa)
- Add required PCIE_RESET_CONFIG_WAIT_MS delay after Link up IRQ
(Niklas Cassel)
Sophgo PCIe controller driver:
- Add DT binding and driver for Sophgo SG2044 PCIe controller driver
in Root Complex mode (Inochi Amaoto)
Synopsys DesignWare PCIe controller driver:
- Add required PCIE_RESET_CONFIG_WAIT_MS after waiting for Link up on
Ports that support > 5.0 GT/s. Slower Ports still rely on the
not-quite-correct PCIE_LINK_WAIT_SLEEP_MS 90ms default delay while
waiting for the Link (Niklas Cassel)"
* tag 'pci-v6.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (116 commits)
dt-bindings: PCI: qcom,pcie-sa8775p: Document 'link_down' reset
dt-bindings: PCI: Remove 83xx-512x-pci.txt
dt-bindings: PCI: Convert amazon,al-alpine-v[23]-pcie to DT schema
dt-bindings: PCI: Convert marvell,armada-3700-pcie to DT schema
dt-bindings: PCI: Convert apm,xgene-pcie to DT schema
dt-bindings: PCI: Convert axis,artpec6-pcie to DT schema
dt-bindings: PCI: Convert st,spear1340-pcie to DT schema
PCI: Move is_pciehp check out of pciehp_is_native()
PCI: pciehp: Use is_pciehp instead of is_hotplug_bridge
PCI/portdrv: Use is_pciehp instead of is_hotplug_bridge
PCI/ACPI: Fix runtime PM ref imbalance on Hot-Plug Capable ports
selftests: pci_endpoint: Add doorbell test case
misc: pci_endpoint_test: Add doorbell test case
PCI: endpoint: pci-epf-test: Add doorbell test support
PCI: endpoint: Add pci_epf_align_inbound_addr() helper for inbound address alignment
PCI: endpoint: pci-ep-msi: Add checks for MSI parent and mutability
PCI: endpoint: Add RC-to-EP doorbell support using platform MSI controller
PCI: dwc: Add Sophgo SG2044 PCIe controller driver in Root Complex mode
PCI: vmd: Switch to msi_create_parent_irq_domain()
PCI: vmd: Convert to lock guards
...
- Export DWC MSI controller related APIs for use by upcoming DWC-based ECAM
implementation (Mayank Rana)
- Rename gen_pci_init() to pci_host_common_ecam_create() and export for use
by controller drivers (Mayank Rana)
- Add DT binding and driver support for SA8255p, which supports ECAM for
Configuration Space access (Mayank Rana)
- Update DT binding and driver to describe PHYs and per-Root Port resets in
a Root Port stanza and deprecate describing them in the host bridge; this
makes it possible to support multiple Root Ports in the future (Krishna
Chaitanya Chundru)
* pci/controller/qcom:
PCI: qcom: Add support for parsing the new Root Port binding
dt-bindings: PCI: qcom: Move PHY & reset GPIO to Root Port node
PCI: qcom: Add support for Qualcomm SA8255p based PCIe Root Complex
dt-bindings: PCI: qcom,pcie-sa8255p: Document ECAM compliant PCIe root complex
PCI: host-generic: Rename and export gen_pci_init() for PCIe controller drivers
PCI: dwc: Export DWC MSI controller related APIs
- Add optional DT 'num-lanes' property and if present, use it to override
the Maximum Link Width advertised in Link Capabilities (Jim Quinlan)
* pci/controller/brcmstb:
PCI: brcmstb: Replace open coded value with PCIE_T_RRS_READY_MS
MAINTAINERS: Drop Nicolas from maintaining pcie-brcmstb
PCI: brcmstb: Set MLW based on "num-lanes" DT property if present
dt-bindings: PCI: brcm,stb-pcie: Add num-lanes property
Each PCIe controller on SA8775P includes a 'link_down' reset line in
hardware. This patch documents the reset in the device tree binding.
The 'link_down' reset is used to forcefully bring down the PCIe link
layer, which is useful in scenarios such as link recovery after errors,
power management transitions, and hotplug events. Including this reset
line improves robustness and provides finer control over PCIe controller
behavior.
As the 'link_down' reset was omitted in the initial submission, it is now
being documented. While this reset is not required for most of the block's
basic functionality, and device trees lacking it will continue to function
correctly in most cases, it is necessary to ensure maximum robustness when
shutting down or recovering the PCIe core. Therefore, its inclusion is
justified despite the minor ABI change.
Signed-off-by: Ziyue Zhang <ziyue.zhang@oss.qualcomm.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://patch.msgid.link/20250718081718.390790-3-ziyue.zhang@oss.qualcomm.com
This binding is already covered by fsl,mpc8xxx-pci.yaml schema. While
the MPC512x is mentioned here, its compatible strings aren't actually
documented and remain that way.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20250710180843.2971667-1-robh@kernel.org
Convert the Marvell Armada 3700 PCIe binding to DT schema format.
The 'clocks' property was missing and has been added.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20250710180811.2970846-1-robh@kernel.org
DTS example in the bindings should be indented with 2- or 4-spaces and
aligned with opening '- |', so correct any differences like 3-spaces or
mixtures 2- and 4-spaces in one binding.
No functional changes here, but saves some comments during reviews of
new patches built on existing code.
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # For MMC
Acked-by: Lee Jones <lee@kernel.org>
Acked-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> # renesas
Link: https://lore.kernel.org/r/20250107131456.247610-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250725100241.120106-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Move the phys, phy-names, reset-gpios properties to the PCIe Root Port node
from Host Bridge node, as agreed upon here [1].
Update the qcom,pcie-common.yaml to include the 'phys' property in the Root
Port node. 'phy-names' property is not needed in Root Port since each Root
Port supports only one PHY. Also, there is already 'reset-gpios' property
defined for PERST# in pci-bus-common.yaml, so use that property instead of
'perst-gpios'.
For backward compatibility, do not remove any existing properties in the
bridge node, but mark them as 'deprecated' instead.
[1] https://lore.kernel.org/linux-pci/20241211192014.GA3302752@bhelgaas/
Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
[mani: commit message rewording]
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250702-perst-v5-1-920b3d1f6ee1@qti.qualcomm.com
Document the required configuration to enable the PCIe Root Complex on
SA8255p, which is managed by firmware using power-domain based handling
and configured as ECAM compliant.
Signed-off-by: Mayank Rana <mayank.rana@oss.qualcomm.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
[bhelgaas: add "ECAM" in reg description]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250616224259.3549811-4-mayank.rana@oss.qualcomm.com
Convert the Applied Micro X-Gene MSI controller binding to DT schema
format. MSI controllers go in interrupt-controller directory so move the
schema there.
Link: https://lore.kernel.org/r/20250710180757.2970583-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
The TBU clock belongs to the Translation Buffer Unit, part of the SMMU.
The ref clock is already being driven upstream through some of the
branches.
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250521-topic-8150_pcie_drop_clocks-v1-2-3d42e84f6453@oss.qualcomm.com
The TBU clock belongs to the Translation Buffer Unit, part of the SMMU.
The ref clock is already being driven upstream through some of the
branches.
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250521-topic-8150_pcie_drop_clocks-v1-1-3d42e84f6453@oss.qualcomm.com
Update the PCI Endpoint (EP) device tree binding documentation to
include PCIe Gen5 and Gen6 support for the `max-link-speed` property.
Similar to the Host Controller binding, the original EP binding
limited this value to 1~4 (Gen1~Gen4). With current SoCs requiring
Gen5/Gen6 support (e.g., Synopsys/Cadence IP), this change aligns
the EP binding with the kernel's PCIe 6.0 capabilities.
Signed-off-by: Hans Zhang <18255117159@163.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250529021026.475861-3-18255117159@163.com
QCS8300 is derived from SA8775p. Hence, add the callback with SA8775p as
the fallback.
Signed-off-by: Ziyue Zhang <quic_ziyuzhan@quicinc.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250529035635.4162149-3-quic_ziyuzhan@quicinc.com
QCS615 is derived from SM8150. Hence, add the callback with SM8150 as the
fallback.
Signed-off-by: Ziyue Zhang <quic_ziyuzhan@quicinc.com>
[mani: commit message rewording]
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250527072036.3599076-3-quic_ziyuzhan@quicinc.com
The PCIe controller on the SG2044 is Designware based with custom app
registers.
Add binding document for SG2044 PCIe host controller.
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250504004420.202685-2-inochiama@gmail.com
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Merge tag 'pci-v6.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci updates from Bjorn Helgaas:
"Enumeration:
- Print the actual delay time in pci_bridge_wait_for_secondary_bus()
instead of assuming it was 1000ms (Wilfred Mallawa)
- Revert 'iommu/amd: Prevent binding other PCI drivers to IOMMU PCI
devices', which broke resume from system sleep on AMD platforms and
has been fixed by other commits (Lukas Wunner)
Resource management:
- Remove mtip32xx use of pcim_iounmap_regions(), which is deprecated
and unnecessary (Philipp Stanner)
- Remove pcim_iounmap_regions() and pcim_request_region_exclusive()
and related flags since all uses have been removed (Philipp
Stanner)
- Rework devres 'request' functions so they are no longer 'hybrid',
i.e., their behavior no longer depends on whether
pcim_enable_device or pci_enable_device() was used, and remove
related code (Philipp Stanner)
- Warn (not BUG()) about failure to assign optional resources (Ilpo
Järvinen)
Error handling:
- Log the DPC Error Source ID only when it's actually valid (when
ERR_FATAL or ERR_NONFATAL was received from a downstream device)
and decode into bus/device/function (Bjorn Helgaas)
- Determine AER log level once and save it so all related messages
use the same level (Karolina Stolarek)
- Use KERN_WARNING, not KERN_ERR, when logging PCIe Correctable
Errors (Karolina Stolarek)
- Ratelimit PCIe Correctable and Non-Fatal error logging, with sysfs
controls on interval and burst count, to avoid flooding logs and
RCU stall warnings (Jon Pan-Doh)
Power management:
- Increment PM usage counter when probing reset methods so we don't
try to read config space of a powered-off device (Alex Williamson)
- Set all devices to D0 during enumeration to ensure ACPI opregion is
connected via _REG (Mario Limonciello)
Power control:
- Rename pwrctrl Kconfig symbols from 'PWRCTL' to 'PWRCTRL' to match
the filename paths. Retain old deprecated symbols for
compatibility, except for the pwrctrl slot driver
(PCI_PWRCTRL_SLOT) (Johan Hovold)
- When unregistering pwrctrl, cancel outstanding rescan work before
cleaning up data structures to avoid use-after-free issues (Brian
Norris)
Bandwidth control:
- Simplify link bandwidth controller by replacing the count of Link
Bandwidth Management Status (LBMS) events with a PCI_LINK_LBMS_SEEN
flag (Ilpo Järvinen)
- Update the Link Speed after retraining, since the Link Speed may
have changed (Ilpo Järvinen)
PCIe native device hotplug:
- Ignore Presence Detect Changed caused by DPC.
pciehp already ignores Link Down/Up events caused by DPC, but on
slots using in-band presence detect, DPC causes a spurious Presence
Detect Changed event (Lukas Wunner)
- Ignore Link Down/Up caused by Secondary Bus Reset.
On hotplug ports using in-band presence detect, the reset causes a
Presence Detect Changed event, which mistakenly caused teardown and
re-enumeration of the device. Drivers may need to annotate code
that resets their device (Lukas Wunner)
Virtualization:
- Add an ACS quirk for Loongson Root Ports that don't advertise ACS
but don't allow peer-to-peer transactions between Root Ports; the
quirk allows each Root Port to be in a separate IOMMU group (Huacai
Chen)
Endpoint framework:
- For fixed-size BARs, retain both the actual size and the possibly
larger size allocated to accommodate iATU alignment requirements
(Jerome Brunet)
- Simplify ctrl/SPAD space allocation and avoid allocating more space
than needed (Jerome Brunet)
- Correct MSI-X PBA offset calculations for DesignWare and Cadence
endpoint controllers (Niklas Cassel)
- Align the return value (number of interrupts) encoding for
pci_epc_get_msi()/pci_epc_ops::get_msi() and
pci_epc_get_msix()/pci_epc_ops::get_msix() (Niklas Cassel)
- Align the nr_irqs parameter encoding for
pci_epc_set_msi()/pci_epc_ops::set_msi() and
pci_epc_set_msix()/pci_epc_ops::set_msix() (Niklas Cassel)
Common host controller library:
- Convert pci-host-common to a library so platforms that don't need
native host controller drivers don't need to include these helper
functions (Manivannan Sadhasivam)
Apple PCIe controller driver:
- Extract ECAM bridge creation helper from pci_host_common_probe() to
separate driver-specific things like MSI from PCI things (Marc
Zyngier)
- Dynamically allocate RID-to_SID bitmap to prepare for SoCs with
varying capabilities (Marc Zyngier)
- Skip ports disabled in DT when setting up ports (Janne Grunau)
- Add t6020 compatible string (Alyssa Rosenzweig)
- Add T602x PCIe support (Hector Martin)
- Directly set/clear INTx mask bits because T602x dropped the
accessors that could do this without locking (Marc Zyngier)
- Move port PHY registers to their own reg items to accommodate
T602x, which moves them around; retain default offsets for existing
DTs that lack phy%d entries with the reg offsets (Hector Martin)
- Stop polling for core refclk, which doesn't work on T602x and the
bootloader has already done anyway (Hector Martin)
- Use gpiod_set_value_cansleep() when asserting PERST# in probe
because we're allowed to sleep there (Hector Martin)
Cadence PCIe controller driver:
- Drop a runtime PM 'put' to resolve a runtime atomic count underflow
(Hans Zhang)
- Make the cadence core buildable as a module (Kishon Vijay Abraham I)
- Add cdns_pcie_host_disable() and cdns_pcie_ep_disable() for use by
loadable drivers when they are removed (Siddharth Vadapalli)
Freescale i.MX6 PCIe controller driver:
- Apply link training workaround only on IMX6Q, IMX6SX, IMX6SP
(Richard Zhu)
- Remove redundant dw_pcie_wait_for_link() from
imx_pcie_start_link(); since the DWC core does this, imx6 only
needs it when retraining for a faster link speed (Richard Zhu)
- Toggle i.MX95 core reset to align with PHY powerup (Richard Zhu)
- Set SYS_AUX_PWR_DET to work around i.MX95 ERR051624 erratum: in
some cases, the controller can't exit 'L23 Ready' through Beacon or
PERST# deassertion (Richard Zhu)
- Clear GEN3_ZRXDC_NONCOMPL to work around i.MX95 ERR051586 erratum:
controller can't meet 2.5 GT/s ZRX-DC timing when operating at 8
GT/s, causing timeouts in L1 (Richard Zhu)
- Wait for i.MX95 PLL lock before enabling controller (Richard Zhu)
- Save/restore i.MX95 LUT for suspend/resume (Richard Zhu)
Mobiveil PCIe controller driver:
- Return bool (not int) for link-up check in
mobiveil_pab_ops.link_up() and layerscape-gen4, mobiveil (Hans
Zhang)
NVIDIA Tegra194 PCIe controller driver:
- Create debugfs directory for 'aspm_state_cnt' only when
CONFIG_PCIEASPM is enabled, since there are no other entries (Hans
Zhang)
Qualcomm PCIe controller driver:
- Add OF support for parsing DT 'eq-presets-<N>gts' property for lane
equalization presets (Krishna Chaitanya Chundru)
- Read Maximum Link Width from the Link Capabilities register if DT
lacks 'num-lanes' property (Krishna Chaitanya Chundru)
- Add Physical Layer 64 GT/s Capability ID and register offsets for
8, 32, and 64 GT/s lane equalization registers (Krishna Chaitanya
Chundru)
- Add generic dwc support for configuring lane equalization presets
(Krishna Chaitanya Chundru)
- Add DT and driver support for PCIe on IPQ5018 SoC (Nitheesh Sekar)
Renesas R-Car PCIe controller driver:
- Describe endpoint BAR 4 as being fixed size (Jerome Brunet)
- Document how to obtain R-Car V4H (r8a779g0) controller firmware
(Yoshihiro Shimoda)
Rockchip PCIe controller driver:
- Reorder rockchip_pci_core_rsts because
reset_control_bulk_deassert() deasserts in reverse order, to fix a
link training regression (Jensen Huang)
- Mark RK3399 as being capable of raising INTx interrupts (Niklas
Cassel)
Rockchip DesignWare PCIe controller driver:
- Check only PCIE_LINKUP, not LTSSM status, to determine whether the
link is up (Shawn Lin)
- Increase N_FTS (used in L0s->L0 transitions) and enable ASPM L0s
for Root Complex and Endpoint modes (Shawn Lin)
- Hide the broken ATS Capability in rockchip_pcie_ep_init() instead
of rockchip_pcie_ep_pre_init() so it stays hidden after PERST#
resets non-sticky registers (Shawn Lin)
- Call phy_power_off() before phy_exit() in rockchip_pcie_phy_deinit()
(Diederik de Haas)
Synopsys DesignWare PCIe controller driver:
- Set PORT_LOGIC_LINK_WIDTH to one lane to make initial link training
more robust; this will not affect the intended link width if all
lanes are functional (Wenbin Yao)
- Return bool (not int) for link-up check in dw_pcie_ops.link_up()
and armada8k, dra7xx, dw-rockchip, exynos, histb, keembay,
keystone, kirin, meson, qcom, qcom-ep, rcar_gen4, spear13xx,
tegra194, uniphier, visconti (Hans Zhang)
- Add debugfs support for exposing DWC device-specific PTM context
(Manivannan Sadhasivam)
TI J721E PCIe driver:
- Make j721e buildable as a loadable and removable module (Siddharth
Vadapalli)
- Fix j721e host/endpoint dependencies that result in link failures
in some configs (Arnd Bergmann)
Device tree bindings:
- Add qcom DT binding for 'global' interrupt (PCIe controller and
link-specific events) for ipq8074, ipq8074-gen3, ipq6018, sa8775p,
sc7280, sc8180x sdm845, sm8150, sm8250, sm8350 (Manivannan
Sadhasivam)
- Add qcom DT binding for 8 MSI SPI interrupts for msm8998, ipq8074,
ipq8074-gen3, ipq6018 (Manivannan Sadhasivam)
- Add dw rockchip DT binding for rk3576 and rk3562 (Kever Yang)
- Correct indentation and style of examples in brcm,stb-pcie,
cdns,cdns-pcie-ep, intel,keembay-pcie-ep, intel,keembay-pcie,
microchip,pcie-host, rcar-pci-ep, rcar-pci-host, xilinx-versal-cpm
(Krzysztof Kozlowski)
- Convert Marvell EBU (dove, kirkwood, armada-370, armada-xp) and
armada8k from text to schema DT bindings (Rob Herring)
- Remove obsolete .txt DT bindings for content that has been moved to
schemas (Rob Herring)
- Add qcom DT binding for MHI registers in IPQ5332, IPQ6018, IPQ8074
and IPQ9574 (Varadarajan Narayanan)
- Convert v3,v360epc-pci from text to DT schema binding (Rob Herring)
- Change microchip,pcie-host DT binding to be 'dma-noncoherent' since
PolarFire may be configured that way (Conor Dooley)
Miscellaneous:
- Drop 'pci' suffix from intel_mid_pci.c filename to match similar
files (Andy Shevchenko)
- All platforms with PCI have an MMU, so add PCI Kconfig dependency
on MMU to simplify build testing and avoid inadvertent build
regressions (Arnd Bergmann)
- Update Krzysztof Wilczyński's email address in MAINTAINERS
(Krzysztof Wilczyński)
- Update Manivannan Sadhasivam's email address in MAINTAINERS
(Manivannan Sadhasivam)"
* tag 'pci-v6.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (147 commits)
MAINTAINERS: Update Manivannan Sadhasivam email address
PCI: j721e: Fix host/endpoint dependencies
PCI: j721e: Add support to build as a loadable module
PCI: cadence-ep: Introduce cdns_pcie_ep_disable() helper for cleanup
PCI: cadence-host: Introduce cdns_pcie_host_disable() helper for cleanup
PCI: cadence: Add support to build pcie-cadence library as a kernel module
MAINTAINERS: Update Krzysztof Wilczyński email address
PCI: Remove unnecessary linesplit in __pci_setup_bridge()
PCI: WARN (not BUG()) when we fail to assign optional resources
PCI: Remove unused pci_printk()
PCI: qcom: Replace PERST# sleep time with proper macro
PCI: dw-rockchip: Replace PERST# sleep time with proper macro
PCI: host-common: Convert to library for host controller drivers
PCI/ERR: Remove misleading TODO regarding kernel panic
PCI: cadence: Remove duplicate message code definitions
PCI: endpoint: Align pci_epc_set_msix(), pci_epc_ops::set_msix() nr_irqs encoding
PCI: endpoint: Align pci_epc_set_msi(), pci_epc_ops::set_msi() nr_irqs encoding
PCI: endpoint: Align pci_epc_get_msix(), pci_epc_ops::get_msix() return value encoding
PCI: endpoint: Align pci_epc_get_msi(), pci_epc_ops::get_msi() return value encoding
PCI: cadence-ep: Correct PBA offset in .set_msix() callback
...
- Add OF support for parsing DT 'eq-presets-<N>gts' property for lane
equalization presets (Krishna Chaitanya Chundru)
- Read Maximum Link Width from the Link Capabilities register if DT lacks
'num-lanes' property (Krishna Chaitanya Chundru)
- Add Physical Layer 64 GT/s Capability ID and register offsets for 8, 32,
and 64 GT/s lane equalization registers (Krishna Chaitanya Chundru)
- Add generic dwc support for configuring lane equalization presets
(Krishna Chaitanya Chundru)
- Add DT and driver support for PCIe on IPQ5018 SoC (Nitheesh Sekar)
* pci/controller/qcom:
PCI: qcom: Add support for IPQ5018
dt-bindings: PCI: qcom: Add IPQ5018 SoC
PCI: dwc: Add support for configuring lane equalization presets
PCI: Add lane equalization register offsets
PCI: dwc: Update pci->num_lanes to maximum supported link width
PCI: of: Add of_pci_get_equalization_presets() API
DT Bindings:
- Convert all remaining interrupt-controller bindings to DT schema
- Convert Rockchip CDN-DP and Freescale TCON, M4IF, TigerP, LDB, PPC
PMC, imx-drm, and ftm-quaddec to DT schema
- Add bindings for fsl,vf610-pit, fsl,ls1021a-wdt, sgx,vz89te,
maxim,max30208, ti,lp8864, and fairphone,fp5-sndcard
- Add top-level constraints for renesas,vsp1 and renesas,fcp
- Add missing constraint in amlogic,pinctrl-a4 'group' nodes
- Adjust the allowed properties for dwc3-xilinx, sony,imx219,
pci-iommu, and renesas,dsi
- Add EcoNet vendor prefix
- Fix the reserved-memory.yaml in fsl,qman-fqd
- Drop obsolete numa.txt and cpu-topology.txt which are schemas in
dtschema now
- Drop Renesas RZ/N1S bindings
- Ensure Arm cpu nodes don't allow undocumented properties. Add all
the properties which are in use and undocumented. Drop the Mediatek
cpufreq binding which is not a binding, but just what DT properties
the driver uses.
- Add compatibles for Renesas RZ/G3E and RZ/V2N Mali Bifrost GPU
- Update documentation on defining child nodes with separate schemas
- Add bindings to PSCI MAINTAINERS entry
DT core:
- Add new functions to simplify driver handling of 'memory-region'
properties. Users to be added next cycle.
- Simplify of_dma_set_restricted_buffer() to use of_for_each_phandle()
- Add missing unlock on error in unittest_data_add()
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Merge tag 'devicetree-for-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring:
"DT Bindings:
- Convert all remaining interrupt-controller bindings to DT schema
- Convert Rockchip CDN-DP and Freescale TCON, M4IF, TigerP, LDB, PPC
PMC, imx-drm, and ftm-quaddec to DT schema
- Add bindings for fsl,vf610-pit, fsl,ls1021a-wdt, sgx,vz89te,
maxim,max30208, ti,lp8864, and fairphone,fp5-sndcard
- Add top-level constraints for renesas,vsp1 and renesas,fcp
- Add missing constraint in amlogic,pinctrl-a4 'group' nodes
- Adjust the allowed properties for dwc3-xilinx, sony,imx219,
pci-iommu, and renesas,dsi
- Add EcoNet vendor prefix
- Fix the reserved-memory.yaml in fsl,qman-fqd
- Drop obsolete numa.txt and cpu-topology.txt which are schemas in
dtschema now
- Drop Renesas RZ/N1S bindings
- Ensure Arm cpu nodes don't allow undocumented properties. Add all
the properties which are in use and undocumented. Drop the Mediatek
cpufreq binding which is not a binding, but just what DT properties
the driver uses.
- Add compatibles for Renesas RZ/G3E and RZ/V2N Mali Bifrost GPU
- Update documentation on defining child nodes with separate schemas
- Add bindings to PSCI MAINTAINERS entry
DT core:
- Add new functions to simplify driver handling of 'memory-region'
properties. Users to be added next cycle.
- Simplify of_dma_set_restricted_buffer() to use
of_for_each_phandle()
- Add missing unlock on error in unittest_data_add()"
* tag 'devicetree-for-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (87 commits)
dt-bindings: timer: Add fsl,vf610-pit.yaml
dt-bindings: gpu: mali-bifrost: Add compatible for RZ/G3E SoC
ASoC: dt-bindings: qcom,sm8250: Add Fairphone 5 sound card
dt-bindings: arm/cpus: Allow 2 power-domains entries
dt-bindings: usb: dwc3-xilinx: allow dma-coherent
media: dt-bindings: sony,imx219: Allow props from video-interface-devices
dt-bindings: soundwire: qcom: Document v2.1.0 version of IP block
dt-bindings: watchdog: fsl-imx-wdt: add compatible string fsl,ls1021a-wdt
dt-bindings: pinctrl: amlogic,pinctrl-a4: Add missing constraint on allowed 'group' node properties
dt-bindings: display: rockchip: Convert cdn-dp-rockchip.txt to yaml
dt-bindings: display: bridge: renesas,dsi: allow properties from dsi-controller
dt-bindings: trivial-devices: Add VZ89TE to trivial
media: dt-bindings: renesas,vsp1: add top-level constraints
media: dt-bindings: renesas,fcp: add top-level constraints
dt-bindings: trivial-devices: Add Maxim max30208
dt-bindings: soc: fsl,qman-fqd: Fix reserved-memory.yaml reference
dt-bindings: interrupt-controller: Convert ti,omap-intc-irq to DT schema
dt-bindings: interrupt-controller: Convert ti,omap4-wugen-mpu to DT schema
dt-bindings: interrupt-controller: Convert ti,keystone-irq to DT schema
dt-bindings: interrupt-controller: Convert technologic,ts4800-irqc to DT schema
...
PolarFire SoC may be configured in a way that requires non-coherent DMA
handling. On RISC-V, buses are coherent by default & the dma-noncoherent
property is required to denote buses or devices that are non-coherent.
For some reason, instead of adding dma-noncoherent to the binding
the pointless, NOP, property dma-coherent was. Swap dma-coherent for
dma-noncoherent.
Fixes: 04aa999eb9 ("dt-bindings: PCI: microchip,pcie-host: Allow dma-noncoherent")
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Link: https://lore.kernel.org/r/20250516-datebook-senator-ff7a1c30cbd5@spud
While altr,msi-controller is used with PCI, it is not a PCI host bridge
and is just an MSI provider. Move it with other MSI providers in the
'interrupt-controller' directory.
Acked-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250507154253.1593870-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Convert the v3,v360epc-pci binding to DT schema format.
Add "clocks" which was not documented and is required. Drop "syscon"
which was documented, but is not used.
Drop the "v3,v360epc-pci" compatible by itself as this device is only
used on the Arm Integrator/AP and not likely going to be used anywhere
else at this point.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patch.msgid.link/20250505220139.2202164-1-robh@kernel.org
Document the use of (msi|iommu)-map for PCI Endpoint (EP) controllers,
which can use MSI as a doorbell mechanism. Each EP controller can support
up to 8 physical functions and 65,536 virtual functions.
Define how to construct device IDs using function bits [2:0] and virtual
function index bits [31:3], enabling (msi|iommu)-map to associate each
child device with a specific (msi|iommu)-specifier.
The EP cannot rely on PCI Requester ID (RID) because the RID is determined
by the PCI topology of the host system. Since the EP may be connected to
different PCI hosts, the RID can vary between systems and is therefore not
a reliable identifier.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/all/20250414-ep-msi-v18-4-f69b49917464@nxp.com
The MHI registers are present in IPQ5332, IPQ6018, IPQ8074 and IPQ9574
SoCs. Hence, add the MHI registers to the binding to allow these registers
to be defined in devicetree.
Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
[mani: commit message rewording]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250317100029.881286-2-quic_varada@quicinc.com
Add support for the PCIe controller on the Qualcomm
IPQ5108 SoC to the bindings.
Signed-off-by: Nitheesh Sekar <quic_nsekar@quicinc.com>
Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
Signed-off-by: George Moussalem <george.moussalem@outlook.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://patch.msgid.link/20250326-ipq5018-pcie-v7-3-e1828fef06c9@outlook.com
The content in these files has been moved to the schemas in dtschema.
pci.txt is covered by pci-bus-common.yaml and pci-host-bridge.yaml.
pci-iommu.txt is covered by pci-iommu.yaml. pci-msi.txt is covered in
msi-map property in pci-host-bridge.yaml.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Cc: Frank Li <Frank.li@nxp.com>
Link: https://patch.msgid.link/20250404221559.552201-1-robh@kernel.org
Convert the marvell,armada8k-pcie binding to DT schema. The binding
uses different names for reg, clocks, and phys which have to be added
to the common Synopsys DWC binding.
The "marvell,reset-gpio" property was not documented. Mark it deprecated
as the "reset-gpios" property can be used instead. The "msi-parent"
property was also not documented.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://patch.msgid.link/20250414214135.1680076-1-robh@kernel.org
Convert the Marvell EBU (Kirkwood, Dove, Armada XP/370) to DT schema
format. Add "error" to interrupt-names which is in use, but missing.
Shorten the example from 10 child nodes to 6 as the additional ones
don't add much value to the example.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://patch.msgid.link/20250414214157.1680484-1-robh@kernel.org
Coding style and common logic dictates that headers should not be
included in device nodes. No functional impact.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250324125202.81986-2-krzysztof.kozlowski@linaro.org
DTS example in the bindings should be indented with 2- or 4-spaces and
aligned with opening '- |', so correct any differences like 3-spaces or
mixtures 2- and 4-spaces in one binding.
No functional changes here, but saves some comments during reviews of
new patches built on existing code.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20250324125202.81986-1-krzysztof.kozlowski@linaro.org
rk3562 is using the same dwc controller as rk3576.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250415051855.59740-2-kever.yang@rock-chips.com
rk3576 is using DWC PCIe controller, with msi interrupt directly to GIC
instead of using GIC ITS, so
- no ITS support is required and the 'msi-map' is not required,
- a new 'msi' interrupt is needed.
Co-developed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
[mani: changed 'its' to 'ITS' in the binding, spelling mistake fix]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patch.msgid.link/20250414145110.11275-2-kever.yang@rock-chips.com
t6020 adds some register ranges compared to t8103, so requires
a new compatible as well as the new PHY registers.
Thanks to Mark and Rob for their helpful suggestions in updating
the binding.
Suggested-by: Mark Kettenis <mark.kettenis@xs4all.nl>
Suggested-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
[maz: added PHY registers, constraints]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Tested-by: Janne Grunau <j@jannau.net>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Link: https://patch.msgid.link/20250401091713.2765724-3-maz@kernel.org
'global' interrupt is used to receive PCIe controller and link specific
events.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250227-pcie-global-irq-v1-20-2b70a7819d1e@linaro.org
'global' interrupt is used to receive PCIe controller and link specific
events.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250227-pcie-global-irq-v1-11-2b70a7819d1e@linaro.org
'global' interrupt is used to receive PCIe controller and link specific
events.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250227-pcie-global-irq-v1-9-2b70a7819d1e@linaro.org
'global' interrupt is used to receive PCIe controller and link specific
events.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250227-pcie-global-irq-v1-7-2b70a7819d1e@linaro.org
'global' interrupt is used to receive PCIe controller and link specific
events.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250227-pcie-global-irq-v1-5-2b70a7819d1e@linaro.org
'global' interrupt is used to receive PCIe controller and link specific
events.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250227-pcie-global-irq-v1-3-2b70a7819d1e@linaro.org
'global' interrupt is used to receive PCIe controller and link specific
events.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250227-pcie-global-irq-v1-1-2b70a7819d1e@linaro.org
