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authorLinus Torvalds <torvalds@linux-foundation.org>2024-07-20 05:03:18 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2024-07-20 05:03:18 +0300
commit3f386cb8ee9f04ff4be164ca7a1d0ef3f81f7374 (patch)
treefe1033d20b226e21fac504ff9fcd492c0aee36b7 /Documentation
parent8e5c0abfa02d85b9cd2419567ad2d73ed8fe4b74 (diff)
parent45659274e60864f9acabba844468e405362bdc8c (diff)
downloadlinux-3f386cb8ee9f04ff4be164ca7a1d0ef3f81f7374.tar.xz
Merge tag 'pci-v6.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci updates from Bjorn Helgaas: "Enumeration: - Define PCIE_RESET_CONFIG_DEVICE_WAIT_MS for the generic 100ms required after reset before config access (Kevin Xie) - Define PCIE_T_RRS_READY_MS for the generic 100ms required after reset before config access (probably should be unified with PCIE_RESET_CONFIG_DEVICE_WAIT_MS) (Damien Le Moal) Resource management: - Rename find_resource() to find_resource_space() to be more descriptive (Ilpo Järvinen) - Export find_resource_space() for use by PCI core, which needs to learn whether there is available space for a bridge window (Ilpo Järvinen) - Prevent double counting of resources so window size doesn't grow on each remove/rescan cycle (Ilpo Järvinen) - Relax bridge window sizing algorithm so a device doesn't break simply because it was removed and rescanned (Ilpo Järvinen) - Evaluate the ACPI PRESERVE_BOOT_CONFIG _DSM in pci_register_host_bridge() (not acpi_pci_root_create()) so we can unify it with similar DT functionality (Vidya Sagar) - Extend use of DT "linux,pci-probe-only" property so it works per-host bridge as well as globally (Vidya Sagar) - Unify support for ACPI PRESERVE_BOOT_CONFIG _DSM and the DT "linux,pci-probe-only" property in pci_preserve_config() (Vidya Sagar) Driver binding: - Add devres infrastructure for managed request and map of partial BAR resources (Philipp Stanner) - Deprecate pcim_iomap_table() because uses like "pcim_iomap_table()[0]" have no good way to return errors (Philipp Stanner) - Add an always-managed pcim_request_region() for use instead of pci_request_region() and similar, which are sometimes managed depending on whether pcim_enable_device() has been called previously (Philipp Stanner) - Reimplement pcim_set_mwi() so it doesn't need to keep store MWI state (Philipp Stanner) - Add pcim_intx() for use instead of pci_intx(), which is sometimes managed depending on whether pcim_enable_device() has been called previously (Philipp Stanner) - Add managed pcim_iomap_range() to allow mapping of a partial BAR (Philipp Stanner) - Fix a devres mapping leak in drm/vboxvideo (Philipp Stanner) Error handling: - Add missing bridge locking in device reset path and add a warning for other possible lock issues (Dan Williams) - Fix use-after-free on concurrent DPC and hot-removal (Lukas Wunner) Power management: - Disable AER and DPC during suspend to avoid spurious wakeups if they share an interrupt with PME (Kai-Heng Feng) PCIe native device hotplug: - Detect if a device was removed or replaced during system sleep so we don't assume a new device is the one that used to be there (Lukas Wunner) Virtualization: - Add an ACS quirk for Broadcom BCM5760X multi-function NIC; it prevents transactions between functions even though it doesn't advertise ACS, so the functions can be attached individually via VFIO (Ajit Khaparde) Peer-to-peer DMA: - Add a "pci=config_acs=" kernel command-line parameter to relax default ACS settings to enable additional peer-to-peer configurations. Requires expert knowledge of topology and ACS operation (Vidya Sagar) Endpoint framework: - Remove unused struct pci_epf_group.type_group (Christophe JAILLET) - Fix error handling in vpci_scan_bus() and epf_ntb_epc_cleanup() (Dan Carpenter) - Make struct pci_epc_class constant (Greg Kroah-Hartman) - Remove unused pci_endpoint_test_bar_{readl,writel} functions (Jiapeng Chong) - Rename "BME" to "Bus Master Enable" (Manivannan Sadhasivam) - Rename struct pci_epc_event_ops.core_init() callback to epc_init() (Manivannan Sadhasivam) - Move DMA init to MHI .epc_init() callback for uniformity (Manivannan Sadhasivam) - Cancel EPF test delayed work when link goes down (Manivannan Sadhasivam) - Add struct pci_epc_event_ops.epc_deinit() callback for cleanup needed on fundamental reset (Manivannan Sadhasivam) - Add 64KB alignment to endpoint test to support Rockchip rk3588 (Niklas Cassel) - Optimize endpoint test by using memcpy() instead of readl() (Niklas Cassel) Device tree bindings: - Add generic "ats-supported" property to advertise that a PCIe Root Complex supports ATS (Jean-Philippe Brucker) Amazon Annapurna Labs PCIe controller driver: - Validate IORESOURCE_BUS presence to avoid NULL pointer dereference (Aleksandr Mishin) Axis ARTPEC-6 PCIe controller driver: - Rename .cpu_addr_fixup() parameter to reflect that it is a PCI address, not a CPU address (Niklas Cassel) Freescale i.MX6 PCIe controller driver: - Convert to agnostic GPIO API (Andy Shevchenko) Freescale Layerscape PCIe controller driver: - Make struct mobiveil_rp_ops constant (Christophe JAILLET) - Use new generic dw_pcie_ep_linkdown() to handle link-down events (Manivannan Sadhasivam) HiSilicon Kirin PCIe controller driver: - Convert to agnostic GPIO API (Andy Shevchenko) - Use _scoped() iterator for OF children to ensure refcounts are decremented at loop exit (Javier Carrasco) Intel VMD host bridge driver: - Create sysfs "domain" symlink before downstream devices are exposed to userspace by pci_bus_add_devices() (Jiwei Sun) Loongson PCIe controller driver: - Enable MSI when LS7A is used with new CPUs that have integrated PCIe Root Complex, e.g., Loongson-3C6000, so downstream devices can use MSI (Huacai Chen) Microchip AXI PolarFlare PCIe controller driver: - Move pcie-microchip-host.c to a new PLDA directory (Minda Chen) - Factor PLDA generic items out to a common plda,xpressrich3-axi-common.yaml binding (Minda Chen) - Factor PLDA generic data structures and code out to shared pcie-plda.h, pcie-plda-host.c (Minda Chen) - Add PLDA generic interrupt handling with a .request_event_irq() callback for vendor-specific events (Minda Chen) - Add PLDA generic host init/deinit and map bus functions for use by vendor-specific drivers (Minda Chen) - Rework to use PLDA core (Minda Chen) Microsoft Hyper-V host bridge driver: - Return zero, not garbage, when reading PCI_INTERRUPT_PIN (Wei Liu) NVIDIA Tegra194 PCIe controller driver: - Remove unused struct tegra_pcie_soc (Dr. David Alan Gilbert) - Set 64KB inbound ATU alignment restriction (Jon Hunter) Qualcomm PCIe controller driver: - Make the MHI reg region mandatory for X1E80100, since all PCIe controllers have it (Abel Vesa) - Prevent use of uninitialized data and possible error pointer dereference (Dan Carpenter) - Return error, not success, if dev_pm_opp_find_freq_floor() fails (Dan Carpenter) - Add Operating Performance Points (OPP) support to scale performance state based on aggregate link bandwidth to improve SoC power efficiency (Krishna chaitanya chundru) - Vote for the CPU-PCIe ICC (interconnect) path to ensure it stays active even if other drivers don't vote for it (Krishna chaitanya chundru) - Use devm_clk_bulk_get_all() to get all the clocks from DT to avoid writing out all the clock names (Manivannan Sadhasivam) - Add DT binding and driver support for the SA8775P SoC (Mrinmay Sarkar) - Add HDMA support for the SA8775P SoC (Mrinmay Sarkar) - Override the SA8775P NO_SNOOP default to avoid possible memory corruption (Mrinmay Sarkar) - Make sure resources are disabled during PERST# assertion, even if the link is already disabled (Manivannan Sadhasivam) - Use new generic dw_pcie_ep_linkdown() to handle link-down events (Manivannan Sadhasivam) - Add DT and endpoint driver support for the SA8775P SoC (Mrinmay Sarkar) - Add Hyper DMA (HDMA) support for the SA8775P SoC and enable it in the EPF MHI driver (Mrinmay Sarkar) - Set PCIE_PARF_NO_SNOOP_OVERIDE to override the default NO_SNOOP attribute on the SA8775P SoC (both Root Complex and Endpoint mode) to avoid possible memory corruption (Mrinmay Sarkar) Renesas R-Car PCIe controller driver: - Demote WARN() to dev_warn_ratelimited() in rcar_pcie_wakeup() to avoid unnecessary backtrace (Marek Vasut) - Add DT and driver support for R-Car V4H (R8A779G0) host and endpoint. This requires separate proprietary firmware (Yoshihiro Shimoda) Rockchip PCIe controller driver: - Assert PERST# for 100ms after power is stable (Damien Le Moal) - Wait PCIE_T_RRS_READY_MS (100ms) after reset before starting configuration (Damien Le Moal) - Use GPIOD_OUT_LOW flag while requesting ep_gpio to fix a firmware crash on Qcom-based modems with Rockpro64 board (Manivannan Sadhasivam) Rockchip DesignWare PCIe controller driver: - Factor common parts of rockchip-dw-pcie DT binding to be shared by Root Complex and Endpoint mode (Niklas Cassel) - Add missing INTx signals to common DT binding (Niklas Cassel) - Add eDMA items to DT binding for Endpoint controller (Niklas Cassel) - Fix initial dw-rockchip PERST# GPIO value to prevent unnecessary short assert/deassert that causes issues with some WLAN controllers (Niklas Cassel) - Refactor dw-rockchip and add support for Endpoint mode (Niklas Cassel) - Call pci_epc_init_notify() and drop dw_pcie_ep_init_notify() wrapper (Niklas Cassel) - Add error messages in .probe() error paths to improve user experience (Uwe Kleine-König) Samsung Exynos PCIe controller driver: - Use bulk clock APIs to simplify clock setup (Shradha Todi) StarFive PCIe controller driver: - Add DT binding and driver support for the StarFive JH7110 PLDA-based PCIe controller (Minda Chen) Synopsys DesignWare PCIe controller driver: - Add generic support for sending PME_Turn_Off when system suspends (Frank Li) - Fix incorrect interpretation of iATU slot 0 after PERST# assert/deassert (Frank Li) - Use msleep() instead of usleep_range() while waiting for link (Konrad Dybcio) - Refactor dw_pcie_edma_find_chip() to enable adding support for Hyper DMA (HDMA) (Manivannan Sadhasivam) - Enable drivers to supply the eDMA channel count since some can't auto detect this (Manivannan Sadhasivam) - Call pci_epc_init_notify() and drop dw_pcie_ep_init_notify() wrapper (Manivannan Sadhasivam) - Pass the eDMA mapping format directly from drivers instead of maintaining a capability for it (Manivannan Sadhasivam) - Add generic dw_pcie_ep_linkdown() to notify EPF drivers about link-down events and restore non-sticky DWC registers lost on link down (Manivannan Sadhasivam) - Add vendor-specific "apb" reg name, interrupt names, INTx names to generic binding (Niklas Cassel) - Enforce DWC restriction that 64-bit BARs must start with an even-numbered BAR (Niklas Cassel) - Consolidate args of dw_pcie_prog_outbound_atu() into a structure (Yoshihiro Shimoda) - Add support for endpoints to send Message TLPs, e.g., for INTx emulation (Yoshihiro Shimoda) TI DRA7xx PCIe controller driver: - Rename .cpu_addr_fixup() parameter to reflect that it is a PCI address, not a CPU address (Niklas Cassel) TI Keystone PCIe controller driver: - Validate IORESOURCE_BUS presence to avoid NULL pointer dereference (Aleksandr Mishin) - Work around AM65x/DRA80xM Errata #i2037 that corrupts TLPs and causes processor hangs by limiting Max_Read_Request_Size (MRRS) and Max_Payload_Size (MPS) (Kishon Vijay Abraham I) - Leave BAR 0 disabled for AM654x to fix a regression caused by 6ab15b5e7057 ("PCI: dwc: keystone: Convert .scan_bus() callback to use add_bus"), which caused a 45-second boot delay (Siddharth Vadapalli) Xilinx Versal CPM PCIe controller driver: - Fix overlapping bridge registers and 32-bit BAR addresses in DT binding (Thippeswamy Havalige) MicroSemi Switchtec management driver: - Make struct switchtec_class constant (Greg Kroah-Hartman) Miscellaneous: - Remove unused struct acpi_handle_node (Dr. David Alan Gilbert) - Add missing MODULE_DESCRIPTION() macros (Jeff Johnson)" * tag 'pci-v6.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (154 commits) PCI: loongson: Enable MSI in LS7A Root Complex PCI: Extend ACS configurability PCI: Add missing bridge lock to pci_bus_lock() drm/vboxvideo: fix mapping leaks PCI: Add managed pcim_iomap_range() PCI: Remove legacy pcim_release() PCI: Add managed pcim_intx() PCI: vmd: Create domain symlink before pci_bus_add_devices() PCI: qcom: Prevent use of uninitialized data in qcom_pcie_suspend_noirq() PCI: qcom: Prevent potential error pointer dereference PCI: qcom: Fix missing error code in qcom_pcie_probe() PCI: Give pcim_set_mwi() its own devres cleanup callback PCI: Move struct pci_devres.pinned bit to struct pci_dev PCI: Remove struct pci_devres.enabled status bit PCI: Document hybrid devres hazards PCI: Add managed pcim_request_region() PCI: Deprecate pcim_iomap_table(), pcim_iomap_regions_request_all() PCI: Add managed partial-BAR request and map infrastructure PCI: Add devres helpers for iomap table PCI: Add and use devres helper for bit masks ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/PCI/endpoint/pci-endpoint.rst4
-rw-r--r--Documentation/PCI/pciebus-howto.rst2
-rw-r--r--Documentation/admin-guide/kernel-parameters.txt32
-rw-r--r--Documentation/devicetree/bindings/pci/mediatek,mt7621-pcie.yaml29
-rw-r--r--Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml55
-rw-r--r--Documentation/devicetree/bindings/pci/plda,xpressrich3-axi-common.yaml75
-rw-r--r--Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml64
-rw-r--r--Documentation/devicetree/bindings/pci/qcom,pcie-sm8450.yaml4
-rw-r--r--Documentation/devicetree/bindings/pci/qcom,pcie-x1e80100.yaml3
-rw-r--r--Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml126
-rw-r--r--Documentation/devicetree/bindings/pci/rockchip-dw-pcie-ep.yaml95
-rw-r--r--Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml93
-rw-r--r--Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml13
-rw-r--r--Documentation/devicetree/bindings/pci/starfive,jh7110-pcie.yaml120
-rw-r--r--Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml2
-rw-r--r--Documentation/translations/zh_CN/PCI/pciebus-howto.rst2
16 files changed, 564 insertions, 155 deletions
diff --git a/Documentation/PCI/endpoint/pci-endpoint.rst b/Documentation/PCI/endpoint/pci-endpoint.rst
index 4f5622a65555..21507e3cc238 100644
--- a/Documentation/PCI/endpoint/pci-endpoint.rst
+++ b/Documentation/PCI/endpoint/pci-endpoint.rst
@@ -172,8 +172,8 @@ by the PCI endpoint function driver.
* bind: ops to perform when a EPC device has been bound to EPF device
* unbind: ops to perform when a binding has been lost between a EPC
device and EPF device
- * linkup: ops to perform when the EPC device has established a
- connection with a host system
+ * add_cfs: optional ops to create function specific configfs
+ attributes
The PCI Function driver can then register the PCI EPF driver by using
pci_epf_register_driver().
diff --git a/Documentation/PCI/pciebus-howto.rst b/Documentation/PCI/pciebus-howto.rst
index a0027e8fb0d0..f344452651e1 100644
--- a/Documentation/PCI/pciebus-howto.rst
+++ b/Documentation/PCI/pciebus-howto.rst
@@ -139,7 +139,7 @@ driver data structure.
static struct pcie_port_service_driver root_aerdrv = {
.name = (char *)device_name,
- .id_table = &service_id[0],
+ .id_table = service_id,
.probe = aerdrv_load,
.remove = aerdrv_unload,
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 0e06d0b09590..681d32b00779 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -4564,6 +4564,38 @@
bridges without forcing it upstream. Note:
this removes isolation between devices and
may put more devices in an IOMMU group.
+ config_acs=
+ Format:
+ <ACS flags>@<pci_dev>[; ...]
+ Specify one or more PCI devices (in the format
+ specified above) optionally prepended with flags
+ and separated by semicolons. The respective
+ capabilities will be enabled, disabled or
+ unchanged based on what is specified in
+ flags.
+
+ ACS Flags is defined as follows:
+ bit-0 : ACS Source Validation
+ bit-1 : ACS Translation Blocking
+ bit-2 : ACS P2P Request Redirect
+ bit-3 : ACS P2P Completion Redirect
+ bit-4 : ACS Upstream Forwarding
+ bit-5 : ACS P2P Egress Control
+ bit-6 : ACS Direct Translated P2P
+ Each bit can be marked as:
+ '0' – force disabled
+ '1' – force enabled
+ 'x' – unchanged
+ For example,
+ pci=config_acs=10x
+ would configure all devices that support
+ ACS to enable P2P Request Redirect, disable
+ Translation Blocking, and leave Source
+ Validation unchanged from whatever power-up
+ or firmware set it to.
+
+ Note: this may remove isolation between devices
+ and may put more devices in an IOMMU group.
force_floating [S390] Force usage of floating interrupts.
nomio [S390] Do not use MIO instructions.
norid [S390] ignore the RID field and force use of
diff --git a/Documentation/devicetree/bindings/pci/mediatek,mt7621-pcie.yaml b/Documentation/devicetree/bindings/pci/mediatek,mt7621-pcie.yaml
index 6fba42156db6..c41608863d6c 100644
--- a/Documentation/devicetree/bindings/pci/mediatek,mt7621-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/mediatek,mt7621-pcie.yaml
@@ -13,6 +13,35 @@ description: |+
MediaTek MT7621 PCIe subsys supports a single Root Complex (RC)
with 3 Root Ports. Each Root Port supports a Gen1 1-lane Link
+ MT7621 PCIe HOST Topology
+
+ .-------.
+ | |
+ | CPU |
+ | |
+ '-------'
+ |
+ |
+ |
+ v
+ .------------------.
+ .-----------| HOST/PCI Bridge |------------.
+ | '------------------' | Type1
+ BUS0 | | | Access
+ v v v On Bus0
+ .-------------. .-------------. .-------------.
+ | VIRTUAL P2P | | VIRTUAL P2P | | VIRTUAL P2P |
+ | BUS0 | | BUS0 | | BUS0 |
+ | DEV0 | | DEV1 | | DEV2 |
+ '-------------' '-------------' '-------------'
+ Type0 | Type0 | Type0 |
+ Access BUS1 | Access BUS2| Access BUS3|
+ On Bus1 v On Bus2 v On Bus3 v
+ .----------. .----------. .----------.
+ | Device 0 | | Device 0 | | Device 0 |
+ | Func 0 | | Func 0 | | Func 0 |
+ '----------' '----------' '----------'
+
allOf:
- $ref: /schemas/pci/pci-host-bridge.yaml#
diff --git a/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml b/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml
index 5d7aec5f54e7..612633ba59e2 100644
--- a/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml
+++ b/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml
@@ -10,21 +10,13 @@ maintainers:
- Daire McNamara <daire.mcnamara@microchip.com>
allOf:
- - $ref: /schemas/pci/pci-host-bridge.yaml#
+ - $ref: plda,xpressrich3-axi-common.yaml#
- $ref: /schemas/interrupt-controller/msi-controller.yaml#
properties:
compatible:
const: microchip,pcie-host-1.0 # PolarFire
- reg:
- maxItems: 2
-
- reg-names:
- items:
- - const: cfg
- - const: apb
-
clocks:
description:
Fabric Interface Controllers, FICs, are the interface between the FPGA
@@ -52,18 +44,6 @@ properties:
items:
pattern: '^fic[0-3]$'
- interrupts:
- minItems: 1
- items:
- - description: PCIe host controller
- - description: builtin MSI controller
-
- interrupt-names:
- minItems: 1
- items:
- - const: pcie
- - const: msi
-
ranges:
minItems: 1
maxItems: 3
@@ -72,39 +52,6 @@ properties:
minItems: 1
maxItems: 6
- msi-controller:
- description: Identifies the node as an MSI controller.
-
- msi-parent:
- description: MSI controller the device is capable of using.
-
- interrupt-controller:
- type: object
- properties:
- '#address-cells':
- const: 0
-
- '#interrupt-cells':
- const: 1
-
- interrupt-controller: true
-
- required:
- - '#address-cells'
- - '#interrupt-cells'
- - interrupt-controller
-
- additionalProperties: false
-
-required:
- - reg
- - reg-names
- - "#interrupt-cells"
- - interrupts
- - interrupt-map-mask
- - interrupt-map
- - msi-controller
-
unevaluatedProperties: false
examples:
diff --git a/Documentation/devicetree/bindings/pci/plda,xpressrich3-axi-common.yaml b/Documentation/devicetree/bindings/pci/plda,xpressrich3-axi-common.yaml
new file mode 100644
index 000000000000..7a57a80052a0
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/plda,xpressrich3-axi-common.yaml
@@ -0,0 +1,75 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/plda,xpressrich3-axi-common.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: PLDA XpressRICH PCIe host common properties
+
+maintainers:
+ - Daire McNamara <daire.mcnamara@microchip.com>
+ - Kevin Xie <kevin.xie@starfivetech.com>
+
+description:
+ Generic PLDA XpressRICH PCIe host common properties.
+
+allOf:
+ - $ref: /schemas/pci/pci-host-bridge.yaml#
+
+properties:
+ reg:
+ maxItems: 2
+
+ reg-names:
+ items:
+ - const: cfg
+ - const: apb
+
+ interrupts:
+ minItems: 1
+ items:
+ - description: PCIe host controller
+ - description: builtin MSI controller
+
+ interrupt-names:
+ minItems: 1
+ items:
+ - const: pcie
+ - const: msi
+
+ msi-controller:
+ description: Identifies the node as an MSI controller.
+
+ msi-parent:
+ description: MSI controller the device is capable of using.
+
+ interrupt-controller:
+ type: object
+ properties:
+ '#address-cells':
+ const: 0
+
+ '#interrupt-cells':
+ const: 1
+
+ interrupt-controller: true
+
+ required:
+ - '#address-cells'
+ - '#interrupt-cells'
+ - interrupt-controller
+
+ additionalProperties: false
+
+required:
+ - reg
+ - reg-names
+ - interrupts
+ - msi-controller
+ - "#interrupt-cells"
+ - interrupt-map-mask
+ - interrupt-map
+
+additionalProperties: true
+
+...
diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
index a223ce029cab..46802f7d9482 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
@@ -13,6 +13,7 @@ properties:
compatible:
oneOf:
- enum:
+ - qcom,sa8775p-pcie-ep
- qcom,sdx55-pcie-ep
- qcom,sm8450-pcie-ep
- items:
@@ -20,6 +21,7 @@ properties:
- const: qcom,sdx55-pcie-ep
reg:
+ minItems: 6
items:
- description: Qualcomm-specific PARF configuration registers
- description: DesignWare PCIe registers
@@ -27,8 +29,10 @@ properties:
- description: Address Translation Unit (ATU) registers
- description: Memory region used to map remote RC address space
- description: BAR memory region
+ - description: DMA register space
reg-names:
+ minItems: 6
items:
- const: parf
- const: dbi
@@ -36,13 +40,14 @@ properties:
- const: atu
- const: addr_space
- const: mmio
+ - const: dma
clocks:
- minItems: 7
+ minItems: 5
maxItems: 8
clock-names:
- minItems: 7
+ minItems: 5
maxItems: 8
qcom,perst-regs:
@@ -57,14 +62,18 @@ properties:
- description: Perst separation enable offset
interrupts:
+ minItems: 2
items:
- description: PCIe Global interrupt
- description: PCIe Doorbell interrupt
+ - description: DMA interrupt
interrupt-names:
+ minItems: 2
items:
- const: global
- const: doorbell
+ - const: dma
reset-gpios:
description: GPIO used as PERST# input signal
@@ -125,6 +134,10 @@ allOf:
- qcom,sdx55-pcie-ep
then:
properties:
+ reg:
+ maxItems: 6
+ reg-names:
+ maxItems: 6
clocks:
items:
- description: PCIe Auxiliary clock
@@ -143,6 +156,10 @@ allOf:
- const: slave_q2a
- const: sleep
- const: ref
+ interrupts:
+ maxItems: 2
+ interrupt-names:
+ maxItems: 2
- if:
properties:
@@ -152,6 +169,10 @@ allOf:
- qcom,sm8450-pcie-ep
then:
properties:
+ reg:
+ maxItems: 6
+ reg-names:
+ maxItems: 6
clocks:
items:
- description: PCIe Auxiliary clock
@@ -172,6 +193,45 @@ allOf:
- const: ref
- const: ddrss_sf_tbu
- const: aggre_noc_axi
+ interrupts:
+ maxItems: 2
+ interrupt-names:
+ maxItems: 2
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - qcom,sa8775p-pcie-ep
+ then:
+ properties:
+ reg:
+ minItems: 7
+ maxItems: 7
+ reg-names:
+ minItems: 7
+ maxItems: 7
+ clocks:
+ items:
+ - description: PCIe Auxiliary clock
+ - description: PCIe CFG AHB clock
+ - description: PCIe Master AXI clock
+ - description: PCIe Slave AXI clock
+ - description: PCIe Slave Q2A AXI clock
+ clock-names:
+ items:
+ - const: aux
+ - const: cfg
+ - const: bus_master
+ - const: bus_slave
+ - const: slave_q2a
+ interrupts:
+ minItems: 3
+ maxItems: 3
+ interrupt-names:
+ minItems: 3
+ maxItems: 3
unevaluatedProperties: false
diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-sm8450.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-sm8450.yaml
index 1496d6993ab4..d8c0afaa4b19 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie-sm8450.yaml
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie-sm8450.yaml
@@ -69,6 +69,10 @@ properties:
- const: msi6
- const: msi7
+ operating-points-v2: true
+ opp-table:
+ type: object
+
resets:
maxItems: 1
diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-x1e80100.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-x1e80100.yaml
index 1074310a8e7a..a9db0a231563 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie-x1e80100.yaml
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie-x1e80100.yaml
@@ -19,11 +19,10 @@ properties:
const: qcom,pcie-x1e80100
reg:
- minItems: 5
+ minItems: 6
maxItems: 6
reg-names:
- minItems: 5
items:
- const: parf # Qualcomm specific registers
- const: dbi # DesignWare PCIe registers
diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml
new file mode 100644
index 000000000000..cc9adfc7611c
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-common.yaml
@@ -0,0 +1,126 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/rockchip-dw-pcie-common.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: DesignWare based PCIe RC/EP controller on Rockchip SoCs
+
+maintainers:
+ - Shawn Lin <shawn.lin@rock-chips.com>
+ - Simon Xue <xxm@rock-chips.com>
+ - Heiko Stuebner <heiko@sntech.de>
+
+description: |+
+ Generic properties for the DesignWare based PCIe RC/EP controller on Rockchip
+ SoCs.
+
+properties:
+ clocks:
+ minItems: 5
+ items:
+ - description: AHB clock for PCIe master
+ - description: AHB clock for PCIe slave
+ - description: AHB clock for PCIe dbi
+ - description: APB clock for PCIe
+ - description: Auxiliary clock for PCIe
+ - description: PIPE clock
+ - description: Reference clock for PCIe
+
+ clock-names:
+ minItems: 5
+ items:
+ - const: aclk_mst
+ - const: aclk_slv
+ - const: aclk_dbi
+ - const: pclk
+ - const: aux
+ - const: pipe
+ - const: ref
+
+ interrupts:
+ minItems: 5
+ items:
+ - description:
+ Combined system interrupt, which is used to signal the following
+ interrupts - phy_link_up, dll_link_up, link_req_rst_not, hp_pme,
+ hp, hp_msi, link_auto_bw, link_auto_bw_msi, bw_mgt, bw_mgt_msi,
+ edma_wr, edma_rd, dpa_sub_upd, rbar_update, link_eq_req, ep_elbi_app
+ - description:
+ Combined PM interrupt, which is used to signal the following
+ interrupts - linkst_in_l1sub, linkst_in_l1, linkst_in_l2,
+ linkst_in_l0s, linkst_out_l1sub, linkst_out_l1, linkst_out_l2,
+ linkst_out_l0s, pm_dstate_update
+ - description:
+ Combined message interrupt, which is used to signal the following
+ interrupts - ven_msg, unlock_msg, ltr_msg, cfg_pme, cfg_pme_msi,
+ pm_pme, pm_to_ack, pm_turnoff, obff_idle, obff_obff, obff_cpu_active
+ - description:
+ Combined legacy interrupt, which is used to signal the following
+ interrupts - inta, intb, intc, intd, tx_inta, tx_intb, tx_intc,
+ tx_intd
+ - description:
+ Combined error interrupt, which is used to signal the following
+ interrupts - aer_rc_err, aer_rc_err_msi, rx_cpl_timeout,
+ tx_cpl_timeout, cor_err_sent, nf_err_sent, f_err_sent, cor_err_rx,
+ nf_err_rx, f_err_rx, radm_qoverflow
+ - description:
+ eDMA write channel 0 interrupt
+ - description:
+ eDMA write channel 1 interrupt
+ - description:
+ eDMA read channel 0 interrupt
+ - description:
+ eDMA read channel 1 interrupt
+
+ interrupt-names:
+ minItems: 5
+ items:
+ - const: sys
+ - const: pmc
+ - const: msg
+ - const: legacy
+ - const: err
+ - const: dma0
+ - const: dma1
+ - const: dma2
+ - const: dma3
+
+ num-lanes: true
+
+ phys:
+ maxItems: 1
+
+ phy-names:
+ const: pcie-phy
+
+ power-domains:
+ maxItems: 1
+
+ resets:
+ minItems: 1
+ maxItems: 2
+
+ reset-names:
+ oneOf:
+ - const: pipe
+ - items:
+ - const: pwr
+ - const: pipe
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - clocks
+ - clock-names
+ - num-lanes
+ - phys
+ - phy-names
+ - power-domains
+ - resets
+ - reset-names
+
+additionalProperties: true
+
+...
diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-ep.yaml
new file mode 100644
index 000000000000..f2d1137aff50
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie-ep.yaml
@@ -0,0 +1,95 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/rockchip-dw-pcie-ep.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: DesignWare based PCIe Endpoint controller on Rockchip SoCs
+
+maintainers:
+ - Niklas Cassel <cassel@kernel.org>
+
+description: |+
+ RK3588 SoC PCIe Endpoint controller is based on the Synopsys DesignWare
+ PCIe IP and thus inherits all the common properties defined in
+ snps,dw-pcie-ep.yaml.
+
+allOf:
+ - $ref: /schemas/pci/snps,dw-pcie-ep.yaml#
+ - $ref: /schemas/pci/rockchip-dw-pcie-common.yaml#
+
+properties:
+ compatible:
+ enum:
+ - rockchip,rk3568-pcie-ep
+ - rockchip,rk3588-pcie-ep
+
+ reg:
+ items:
+ - description: Data Bus Interface (DBI) registers
+ - description: Data Bus Interface (DBI) shadow registers
+ - description: Rockchip designed configuration registers
+ - description: Memory region used to map remote RC address space
+ - description: Internal Address Translation Unit (iATU) registers
+
+ reg-names:
+ items:
+ - const: dbi
+ - const: dbi2
+ - const: apb
+ - const: addr_space
+ - const: atu
+
+required:
+ - interrupts
+ - interrupt-names
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/rockchip,rk3588-cru.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/power/rk3588-power.h>
+ #include <dt-bindings/reset/rockchip,rk3588-cru.h>
+
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ pcie3x4_ep: pcie-ep@fe150000 {
+ compatible = "rockchip,rk3588-pcie-ep";
+ reg = <0xa 0x40000000 0x0 0x00100000>,
+ <0xa 0x40100000 0x0 0x00100000>,
+ <0x0 0xfe150000 0x0 0x00010000>,
+ <0x9 0x00000000 0x0 0x40000000>,
+ <0xa 0x40300000 0x0 0x00100000>;
+ reg-names = "dbi", "dbi2", "apb", "addr_space", "atu";
+ clocks = <&cru ACLK_PCIE_4L_MSTR>, <&cru ACLK_PCIE_4L_SLV>,
+ <&cru ACLK_PCIE_4L_DBI>, <&cru PCLK_PCIE_4L>,
+ <&cru CLK_PCIE_AUX0>, <&cru CLK_PCIE4L_PIPE>;
+ clock-names = "aclk_mst", "aclk_slv",
+ "aclk_dbi", "pclk",
+ "aux", "pipe";
+ interrupts = <GIC_SPI 263 IRQ_TYPE_LEVEL_HIGH 0>,
+ <GIC_SPI 262 IRQ_TYPE_LEVEL_HIGH 0>,
+ <GIC_SPI 261 IRQ_TYPE_LEVEL_HIGH 0>,
+ <GIC_SPI 260 IRQ_TYPE_LEVEL_HIGH 0>,
+ <GIC_SPI 259 IRQ_TYPE_LEVEL_HIGH 0>,
+ <GIC_SPI 271 IRQ_TYPE_LEVEL_HIGH 0>,
+ <GIC_SPI 272 IRQ_TYPE_LEVEL_HIGH 0>,
+ <GIC_SPI 269 IRQ_TYPE_LEVEL_HIGH 0>,
+ <GIC_SPI 270 IRQ_TYPE_LEVEL_HIGH 0>;
+ interrupt-names = "sys", "pmc", "msg", "legacy", "err",
+ "dma0", "dma1", "dma2", "dma3";
+ max-link-speed = <3>;
+ num-lanes = <4>;
+ phys = <&pcie30phy>;
+ phy-names = "pcie-phy";
+ power-domains = <&power RK3588_PD_PCIE>;
+ resets = <&cru SRST_PCIE0_POWER_UP>, <&cru SRST_P_PCIE0>;
+ reset-names = "pwr", "pipe";
+ };
+ };
+...
diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
index 5f719218c472..550d8a684af3 100644
--- a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
@@ -4,7 +4,7 @@
$id: http://devicetree.org/schemas/pci/rockchip-dw-pcie.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
-title: DesignWare based PCIe controller on Rockchip SoCs
+title: DesignWare based PCIe Root Complex controller on Rockchip SoCs
maintainers:
- Shawn Lin <shawn.lin@rock-chips.com>
@@ -12,12 +12,13 @@ maintainers:
- Heiko Stuebner <heiko@sntech.de>
description: |+
- RK3568 SoC PCIe host controller is based on the Synopsys DesignWare
+ RK3568 SoC PCIe Root Complex controller is based on the Synopsys DesignWare
PCIe IP and thus inherits all the common properties defined in
snps,dw-pcie.yaml.
allOf:
- $ref: /schemas/pci/snps,dw-pcie.yaml#
+ - $ref: /schemas/pci/rockchip-dw-pcie-common.yaml#
properties:
compatible:
@@ -40,61 +41,6 @@ properties:
- const: apb
- const: config
- clocks:
- minItems: 5
- items:
- - description: AHB clock for PCIe master
- - description: AHB clock for PCIe slave
- - description: AHB clock for PCIe dbi
- - description: APB clock for PCIe
- - description: Auxiliary clock for PCIe
- - description: PIPE clock
- - description: Reference clock for PCIe
-
- clock-names:
- minItems: 5
- items:
- - const: aclk_mst
- - const: aclk_slv
- - const: aclk_dbi
- - const: pclk
- - const: aux
- - const: pipe
- - const: ref
-
- interrupts:
- items:
- - description:
- Combined system interrupt, which is used to signal the following
- interrupts - phy_link_up, dll_link_up, link_req_rst_not, hp_pme,
- hp, hp_msi, link_auto_bw, link_auto_bw_msi, bw_mgt, bw_mgt_msi,
- edma_wr, edma_rd, dpa_sub_upd, rbar_update, link_eq_req, ep_elbi_app
- - description:
- Combined PM interrupt, which is used to signal the following
- interrupts - linkst_in_l1sub, linkst_in_l1, linkst_in_l2,
- linkst_in_l0s, linkst_out_l1sub, linkst_out_l1, linkst_out_l2,
- linkst_out_l0s, pm_dstate_update
- - description:
- Combined message interrupt, which is used to signal the following
- interrupts - ven_msg, unlock_msg, ltr_msg, cfg_pme, cfg_pme_msi,
- pm_pme, pm_to_ack, pm_turnoff, obff_idle, obff_obff, obff_cpu_active
- - description:
- Combined legacy interrupt, which is used to signal the following
- interrupts - inta, intb, intc, intd
- - description:
- Combined error interrupt, which is used to signal the following
- interrupts - aer_rc_err, aer_rc_err_msi, rx_cpl_timeout,
- tx_cpl_timeout, cor_err_sent, nf_err_sent, f_err_sent, cor_err_rx,
- nf_err_rx, f_err_rx, radm_qoverflow
-
- interrupt-names:
- items:
- - const: sys
- - const: pmc
- - const: msg
- - const: legacy
- - const: err
-
legacy-interrupt-controller:
description: Interrupt controller node for handling legacy PCI interrupts.
type: object
@@ -119,47 +65,14 @@ properties:
msi-map: true
- num-lanes: true
-
- phys:
- maxItems: 1
-
- phy-names:
- const: pcie-phy
-
- power-domains:
- maxItems: 1
-
ranges:
minItems: 2
maxItems: 3
- resets:
- minItems: 1
- maxItems: 2
-
- reset-names:
- oneOf:
- - const: pipe
- - items:
- - const: pwr
- - const: pipe
-
vpcie3v3-supply: true
required:
- - compatible
- - reg
- - reg-names
- - clocks
- - clock-names
- msi-map
- - num-lanes
- - phys
- - phy-names
- - power-domains
- - resets
- - reset-names
unevaluatedProperties: false
diff --git a/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml
index bbdb01d22848..f474b9e3fc7e 100644
--- a/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml
+++ b/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml
@@ -100,7 +100,7 @@ properties:
for new bindings.
oneOf:
- description: See native 'elbi/app' CSR region for details.
- enum: [ link, appl ]
+ enum: [ apb, link, appl ]
- description: See native 'atu' CSR region for details.
enum: [ atu_dma ]
allOf:
@@ -152,11 +152,20 @@ properties:
events basis.
const: app
- description:
+ Interrupts triggered when the controller itself (in Endpoint mode)
+ has sent an Assert_INT{A,B,C,D}/Desassert_INT{A,B,C,D} message to
+ the upstream device.
+ pattern: "^tx_int(a|b|c|d)$"
+ - description:
+ Combined interrupt signal raised when the controller has sent an
+ Assert_INT{A,B,C,D} message. See "^tx_int(a|b|c|d)$" for details.
+ const: legacy
+ - description:
Vendor-specific IRQ names. Consider using the generic names above
for new bindings.
oneOf:
- description: See native "app" IRQ for details
- enum: [ intr ]
+ enum: [ intr, sys, pmc, msg, err ]
max-functions:
maximum: 32
diff --git a/Documentation/devicetree/bindings/pci/starfive,jh7110-pcie.yaml b/Documentation/devicetree/bindings/pci/starfive,jh7110-pcie.yaml
new file mode 100644
index 000000000000..67151aaa3948
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/starfive,jh7110-pcie.yaml
@@ -0,0 +1,120 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/starfive,jh7110-pcie.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7110 PCIe host controller
+
+maintainers:
+ - Kevin Xie <kevin.xie@starfivetech.com>
+
+allOf:
+ - $ref: plda,xpressrich3-axi-common.yaml#
+
+properties:
+ compatible:
+ const: starfive,jh7110-pcie
+
+ clocks:
+ items:
+ - description: NOC bus clock
+ - description: Transport layer clock
+ - description: AXI MST0 clock
+ - description: APB clock
+
+ clock-names:
+ items:
+ - const: noc
+ - const: tl
+ - const: axi_mst0
+ - const: apb
+
+ resets:
+ items:
+ - description: AXI MST0 reset
+ - description: AXI SLAVE0 reset
+ - description: AXI SLAVE reset
+ - description: PCIE BRIDGE reset
+ - description: PCIE CORE reset
+ - description: PCIE APB reset
+
+ reset-names:
+ items:
+ - const: mst0
+ - const: slv0
+ - const: slv
+ - const: brg
+ - const: core
+ - const: apb
+
+ starfive,stg-syscon:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ description:
+ The phandle to System Register Controller syscon node.
+
+ perst-gpios:
+ description: GPIO controlled connection to PERST# signal
+ maxItems: 1
+
+ phys:
+ description:
+ Specified PHY is attached to PCIe controller.
+ maxItems: 1
+
+required:
+ - clocks
+ - resets
+ - starfive,stg-syscon
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ pcie@940000000 {
+ compatible = "starfive,jh7110-pcie";
+ reg = <0x9 0x40000000 0x0 0x10000000>,
+ <0x0 0x2b000000 0x0 0x1000000>;
+ reg-names = "cfg", "apb";
+ #address-cells = <3>;
+ #size-cells = <2>;
+ #interrupt-cells = <1>;
+ device_type = "pci";
+ ranges = <0x82000000 0x0 0x30000000 0x0 0x30000000 0x0 0x08000000>,
+ <0xc3000000 0x9 0x00000000 0x9 0x00000000 0x0 0x40000000>;
+ starfive,stg-syscon = <&stg_syscon>;
+ bus-range = <0x0 0xff>;
+ interrupt-parent = <&plic>;
+ interrupts = <56>;
+ interrupt-map-mask = <0x0 0x0 0x0 0x7>;
+ interrupt-map = <0x0 0x0 0x0 0x1 &pcie_intc0 0x1>,
+ <0x0 0x0 0x0 0x2 &pcie_intc0 0x2>,
+ <0x0 0x0 0x0 0x3 &pcie_intc0 0x3>,
+ <0x0 0x0 0x0 0x4 &pcie_intc0 0x4>;
+ msi-controller;
+ clocks = <&syscrg 86>,
+ <&stgcrg 10>,
+ <&stgcrg 8>,
+ <&stgcrg 9>;
+ clock-names = "noc", "tl", "axi_mst0", "apb";
+ resets = <&stgcrg 11>,
+ <&stgcrg 12>,
+ <&stgcrg 13>,
+ <&stgcrg 14>,
+ <&stgcrg 15>,
+ <&stgcrg 16>;
+ perst-gpios = <&gpios 26 GPIO_ACTIVE_LOW>;
+ phys = <&pciephy0>;
+
+ pcie_intc0: interrupt-controller {
+ #address-cells = <0>;
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ };
+ };
+ };
diff --git a/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml b/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
index 4770ce02fcc3..989fb0fa2577 100644
--- a/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
+++ b/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
@@ -92,7 +92,7 @@ examples:
<0 0 0 3 &pcie_intc_0 2>,
<0 0 0 4 &pcie_intc_0 3>;
bus-range = <0x00 0xff>;
- ranges = <0x02000000 0x0 0xe0000000 0x0 0xe0000000 0x0 0x10000000>,
+ ranges = <0x02000000 0x0 0xe0010000 0x0 0xe0010000 0x0 0x10000000>,
<0x43000000 0x80 0x00000000 0x80 0x00000000 0x0 0x80000000>;
msi-map = <0x0 &its_gic 0x0 0x10000>;
reg = <0x0 0xfca10000 0x0 0x1000>,
diff --git a/Documentation/translations/zh_CN/PCI/pciebus-howto.rst b/Documentation/translations/zh_CN/PCI/pciebus-howto.rst
index 65c4301f12cd..c6ffda62af21 100644
--- a/Documentation/translations/zh_CN/PCI/pciebus-howto.rst
+++ b/Documentation/translations/zh_CN/PCI/pciebus-howto.rst
@@ -124,7 +124,7 @@ pcie_port_service_unregister取代了Linux驱动模型的pci_unregister_driver
static struct pcie_port_service_driver root_aerdrv = {
.name = (char *)device_name,
- .id_table = &service_id[0],
+ .id_table = service_id,
.probe = aerdrv_load,
.remove = aerdrv_unload,