linux-dev/Documentation/devicetree/bindings/pci, branch master

Merge tag 'pci-v6.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

2022-10-11T18:08:18Z

Pull pci updates from Bjorn Helgaas: "Resource management: - Distribute spare resources to unconfigured hotplug bridges at boot-time (not just when hot-adding such a bridge), which makes hot-adding devices to docks work better. - Revert to a BAR assignment inherited from firmware only when the address is actually reachable via any upstream bridges, which fixes some cases where firmware doesn't configure all devices. - Add a sysfs interface to resize BARs so this can be done before assigning devices to a VM through VFIO. Power management: - Disable Precision Time Management for all devices on suspend to enable lower-power PM state. We previously did this just for Root Ports, which isn't enough because downstream devices can still generate PTM messages, which cause errors if it's disabled in the Root Port. - Save and restore the ASPM L1 PM Substates configuration for suspend/ resume. Previously this configuration was lost, so L1.x states likely stopped working after resume. - Check whether the L1 PM Substates Capability exists. If it didn't exist, we previously read junk and tried to configure L1 Substates based on that. - Fix the LTR_L1.2_THRESHOLD computation, which previously set a threshold for entering L1.2 that was too low in some cases. - Reduce the delay after transitions to or from D3cold by using usleep_range() rather than msleep(), which often slept for ~19ms instead of the 10ms normally required. The spec says 10ms is enough, but it's possible we could trip over devices that need a little more. Error handling: - Work around a BIOS bug that caused Intel Root Ports to advertise a Root Port Programmed I/O (RP PIO) log size of zero, which caused annoying warnings and prevented the kernel from dumping log registers for DPC errors. Qualcomm PCIe controller driver: - Add support for SC8280XP and SA8540P host controllers and SM8450 endpoint controller. - Disable Master AXI clock on endpoint controllers to save power when link is idle or in L1.x. - Expose link state transition counts via debugfs to help debug issues with low-power states. - Add auto-loading module support. Synopsys DesignWare PCIe controller driver: - Remove a dependency on ZONE_DMA32 by allocating the MSI target page differently. There's more work to do related to eDMA controllers, so it's not completely settled" * tag 'pci-v6.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (71 commits) PCI: qcom-ep: Check platform_get_resource_byname() return value PCI: qcom-ep: Add support for SM8450 SoC dt-bindings: PCI: qcom-ep: Add support for SM8450 SoC dt-bindings: PCI: qcom-ep: Define clocks per platform PCI: qcom-ep: Make PERST separation optional dt-bindings: PCI: qcom-ep: Make PERST separation optional PCI: qcom-ep: Disable Master AXI Clock when there is no PCIe traffic PCI: Expose PCIe Resizable BAR support via sysfs PCI/ASPM: Correct LTR_L1.2_THRESHOLD computation PCI/ASPM: Ignore L1 PM Substates if device lacks capability PCI/ASPM: Factor out L1 PM Substates configuration PCI: qcom-ep: Gate Master AXI clock to MHI bus during L1SS PCI: qcom-ep: Expose link transition counts via debugfs PCI: qcom-ep: Disable IRQs during driver remove PCI/ASPM: Save L1 PM Substates Capability for suspend/resume PCI/ASPM: Refactor L1 PM Substates Control Register programming PCI: qcom-ep: Make use of the cached dev pointer PCI: qcom-ep: Rely on the clocks supplied by devicetree PCI: qcom-ep: Add kernel-doc for qcom_pcie_ep structure phy: freescale: imx8m-pcie: Fix the wrong order of phy_init() and phy_power_on() ...

Merge tag 'devicetree-for-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

2022-10-10T20:13:51Z

Pull devicetree updates from Rob Herring: "DT core: - Fix node refcounting in of_find_last_cache_level() - Constify device_node in of_device_compatible_match() - Fix 'dma-ranges' handling in bus controller nodes - Fix handling of initrd start > end - Improve error reporting in of_irq_init() - Taint kernel on DT unittest running - Use strscpy instead of strlcpy - Add a build target, dt_compatible_check, to check for compatible strings used in kernel sources against compatible strings in DT schemas. - Handle DT_SCHEMA_FILES changes when rebuilding DT bindings: - LED bindings for MT6370 PMIC - Convert Mediatek mtk-gce mailbox, MIPS CPU interrupt controller, mt7621 I2C, virtio,pci-iommu, nxp,tda998x, QCom fastrpc, qcom,pdc, and arm,versatile-sysreg to DT schema format - Add nvmem cells to u-boot,env schema - Add more LED_COLOR_ID definitions - Require 'opp-table' uses to be a node - Various schema fixes to match QEMU 'virt' DT usage - Tree wide dropping of redundant 'Device Tree Binding' in schema titles - More (unevaluated|additional)Properties fixes in schema child nodes - Drop various redundant minItems equal to maxItems" * tag 'devicetree-for-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (62 commits) of: base: Shift refcount decrement in of_find_last_cache_level() dt-bindings: leds: Add MediaTek MT6370 flashlight dt-bindings: leds: mt6370: Add MediaTek MT6370 current sink type LED indicator dt-bindings: mailbox: Convert mtk-gce to DT schema of: base: make of_device_compatible_match() accept const device node of: Fix "dma-ranges" handling for bus controllers of: fdt: Remove unused struct fdt_scan_status dt-bindings: display: st,stm32-dsi: Handle data-lanes in DSI port node dt-bindings: timer: Add power-domains for TI timer-dm on K3 dt: Add a check for undocumented compatible strings in kernel kbuild: take into account DT_SCHEMA_FILES changes while checking dtbs dt-bindings: interrupt-controller: migrate MIPS CPU interrupt controller text bindings to YAML dt-bindings: i2c: migrate mt7621 text bindings to YAML dt-bindings: power: gpcv2: correct patternProperties dt-bindings: virtio: Convert virtio,pci-iommu to DT schema dt-bindings: timer: arm,arch_timer: Allow dual compatible string dt-bindings: arm: cpus: Add kryo240 compatible dt-bindings: display: bridge: nxp,tda998x: Convert to json-schema dt-bindings: nvmem: u-boot,env: add basic NVMEM cells dt-bindings: remoteproc: qcom,adsp: enforce smd-edge schema ...

Merge branch 'pci/qcom'

2022-10-05T22:32:57Z

- List platforms that use a single MSI host interrupt in qcom DT (Johan Hovold) - Add SC8280XP, SA8540P support to qcom DT binding and driver(Johan Hovold) - Make all optional clocks truly optional in the driver (Johan Hovold) - Rename per-IP structs to reflect the IP version (Johan Hovold) - Sort device ID match table by compatible string (Johan Hovold) - Add MODULE_DEVICE_TABLE to enable module autoloading (Dmitry Baryshkov) - Drop the unused .post_deinit() callback (Johan Hovold) - Rely on DT for clock information instead of hard-coding it in the driver (Manivannan Sadhasivam) - Disable IRQs when removing driver to avoid spurious IRQs later (Manivannan Sadhasivam) - Expose link transition counts via debugfs to help debug issues with low-power states (Manivannan Sadhasivam) - Gate Master AXI clock to the MHI bus while in L1 substates to save power (Manivannan Sadhasivam) - Disable Master AXI clock to save power when there is no traffic on PCIe (Manivannan Sadhasivam) - Make the "PERST separation" debug feature optional in the DT and the driver (Manivannan Sadhasivam) - Define clocks to be per-platform in DT to prepare for future SoCs (Manivannan Sadhasivam) - Add SM8450 SoC support (Manivannan Sadhasivam) - Check for platform_get_resource_byname() to avoid a NULL pointer dereference (Yang Yingliang) * pci/qcom: PCI: qcom-ep: Check platform_get_resource_byname() return value PCI: qcom-ep: Add support for SM8450 SoC dt-bindings: PCI: qcom-ep: Add support for SM8450 SoC dt-bindings: PCI: qcom-ep: Define clocks per platform PCI: qcom-ep: Make PERST separation optional dt-bindings: PCI: qcom-ep: Make PERST separation optional PCI: qcom-ep: Disable Master AXI Clock when there is no PCIe traffic PCI: qcom-ep: Gate Master AXI clock to MHI bus during L1SS PCI: qcom-ep: Expose link transition counts via debugfs PCI: qcom-ep: Disable IRQs during driver remove PCI: qcom-ep: Make use of the cached dev pointer PCI: qcom-ep: Rely on the clocks supplied by devicetree PCI: qcom-ep: Add kernel-doc for qcom_pcie_ep structure PCI: qcom: Rename host-init error label PCI: qcom: Drop unused post_deinit callback PCI: qcom-ep: Add MODULE_DEVICE_TABLE PCI: qcom: Sort device-id table PCI: qcom: Clean up IP configurations PCI: qcom: Make all optional clocks optional PCI: qcom: Add support for SA8540P PCI: qcom: Add support for SC8280XP dt-bindings: PCI: qcom: Add SA8540P to binding dt-bindings: PCI: qcom: Add SC8280XP to binding dt-bindings: PCI: qcom: Enumerate platforms with single msi interrupt

dt-bindings: PCI: qcom-ep: Add support for SM8450 SoC

2022-10-05T22:17:49Z

Add devicetree bindings support for SM8450 SoC. Only the clocks are different on this platform, rest is same as SDX55. Link: https://lore.kernel.org/r/20220914075350.7992-12-manivannan.sadhasivam@linaro.org Signed-off-by: Manivannan Sadhasivam Signed-off-by: Lorenzo Pieralisi Signed-off-by: Bjorn Helgaas Reviewed-by: Rob Herring

dt-bindings: PCI: qcom-ep: Define clocks per platform

2022-10-05T22:17:25Z

In preparation for adding the bindings for future SoCs, define the clocks per platform. Link: https://lore.kernel.org/r/20220914075350.7992-11-manivannan.sadhasivam@linaro.org Signed-off-by: Manivannan Sadhasivam Signed-off-by: Lorenzo Pieralisi Signed-off-by: Bjorn Helgaas Reviewed-by: Krzysztof Kozlowski

dt-bindings: PCI: qcom-ep: Make PERST separation optional

2022-10-05T22:16:18Z

PERST separation is an optional debug feature used to collect the crash dump from the PCIe endpoint devices by the PCIe host when the endpoint crashes. This feature keeps the PCIe link up by separating the PCIe IP block from the SoC reset logic. Remove the corresponding property "qcom,perst-regs" from the required properties list. Link: https://lore.kernel.org/r/20220914075350.7992-9-manivannan.sadhasivam@linaro.org Signed-off-by: Manivannan Sadhasivam Signed-off-by: Lorenzo Pieralisi Signed-off-by: Bjorn Helgaas Acked-by: Krzysztof Kozlowski

dt-bindings: pci: QCOM Add missing sc7280 aggre0, aggre1 clocks

2022-09-27T09:21:24Z

Add missing aggre0 and aggre1 clocks. Link: https://lore.kernel.org/r/1662626776-19636-3-git-send-email-quic_krichai@quicinc.com Signed-off-by: Krishna chaitanya chundru Signed-off-by: Lorenzo Pieralisi Reviewed-by: Krzysztof Kozlowski

dt-bindings: pci: QCOM Add missing sc7280 aggre0, aggre1 clocks

2022-09-15T02:23:38Z

Add missing aggre0 and aggre1 clocks. Signed-off-by: Krishna chaitanya chundru Reviewed-by: Krzysztof Kozlowski Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/1662626776-19636-3-git-send-email-quic_krichai@quicinc.com

dt-bindings: Remove 'Device Tree Bindings' from end of title:

2022-08-25T19:06:57Z

As indicated in link: https://lore.kernel.org/all/20220822204945.GA808626-robh@kernel.org/ DT schema files should not have 'Device Tree Binding' as part of there title: line. Remove this in most .yaml files, so hopefully preventing developers copying it into new .yaml files, and being asked to remove it. Signed-off-by: Andrew Lunn Link: https://lore.kernel.org/r/20220825020427.3460650-1-andrew@lunn.ch Signed-off-by: Rob Herring

dt-bindings: PCI: microchip,pcie-host: fix missing dma-ranges

2022-08-24T11:38:26Z

The dma-ranges property was missed when adding the binding initially. The root port can use up to 6 address translation tables, depending on configuration. Link: https://www.microsemi.com/document-portal/doc_download/1245812-polarfire-fpga-and-polarfire-soc-fpga-pci-express-user-guide # Section 1.3.3 Link: https://lore.kernel.org/r/20220819231415.3860210-4-mail@conchuod.ie Fixes: 6ee6c89aac35 ("dt-bindings: PCI: microchip: Add Microchip PolarFire host binding") Signed-off-by: Conor Dooley Signed-off-by: Lorenzo Pieralisi Reviewed-by: Rob Herring