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authorLinus Torvalds <torvalds@linux-foundation.org>2022-10-11 21:08:18 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-10-11 21:08:18 +0300
commit041bc24d867a2a577a06534d6d25e500b24a01ef (patch)
treea653e985ec1995e9f126a8408da70653c11dc783 /Documentation/devicetree
parentc440f99695236ceb610606e4b5c50e150981f6c5 (diff)
parent0e00a3aeae255416577fc69b9b49be4778c05464 (diff)
downloadlinux-041bc24d867a2a577a06534d6d25e500b24a01ef.tar.xz
Merge tag 'pci-v6.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
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() ...
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml13
-rw-r--r--Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml31
-rw-r--r--Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml86
-rw-r--r--Documentation/devicetree/bindings/pci/qcom,pcie.yaml70
-rw-r--r--Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml8
5 files changed, 182 insertions, 26 deletions
diff --git a/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml b/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
index 0499b94627ae..c00be39af64e 100644
--- a/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
+++ b/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
@@ -48,7 +48,13 @@ allOf:
properties:
compatible:
- const: mediatek,mt8192-pcie
+ oneOf:
+ - items:
+ - enum:
+ - mediatek,mt8188-pcie
+ - mediatek,mt8195-pcie
+ - const: mediatek,mt8192-pcie
+ - const: mediatek,mt8192-pcie
reg:
maxItems: 1
@@ -84,7 +90,9 @@ properties:
- const: tl_96m
- const: tl_32k
- const: peri_26m
- - const: top_133m
+ - enum:
+ - top_133m # for MT8192
+ - peri_mem # for MT8188/MT8195
assigned-clocks:
maxItems: 1
@@ -126,6 +134,7 @@ required:
- interrupts
- ranges
- clocks
+ - clock-names
- '#interrupt-cells'
- interrupt-controller
diff --git a/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml b/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml
index d2c1b3d46584..f7a3c2636355 100644
--- a/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml
+++ b/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml
@@ -25,6 +25,33 @@ properties:
- const: cfg
- const: apb
+ clocks:
+ description:
+ Fabric Interface Controllers, FICs, are the interface between the FPGA
+ fabric and the core complex on PolarFire SoC. The FICs require two clocks,
+ one from each side of the interface. The "FIC clocks" described by this
+ property are on the core complex side & communication through a FIC is not
+ possible unless it's corresponding clock is enabled. A clock must be
+ enabled for each of the interfaces the root port is connected through.
+ This could in theory be all 4 interfaces, one interface or any combination
+ in between.
+ minItems: 1
+ items:
+ - description: FIC0's clock
+ - description: FIC1's clock
+ - description: FIC2's clock
+ - description: FIC3's clock
+
+ clock-names:
+ description:
+ As any FIC connection combination is possible, the names should match the
+ order in the clocks property and take the form "ficN" where N is a number
+ 0-3
+ minItems: 1
+ maxItems: 4
+ items:
+ pattern: '^fic[0-3]$'
+
interrupts:
minItems: 1
items:
@@ -40,6 +67,10 @@ properties:
ranges:
maxItems: 1
+ dma-ranges:
+ minItems: 1
+ maxItems: 6
+
msi-controller:
description: Identifies the node as an MSI controller.
diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
index 3d23599e5e91..977c976ea799 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
@@ -9,12 +9,11 @@ title: Qualcomm PCIe Endpoint Controller binding
maintainers:
- Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
-allOf:
- - $ref: "pci-ep.yaml#"
-
properties:
compatible:
- const: qcom,sdx55-pcie-ep
+ enum:
+ - qcom,sdx55-pcie-ep
+ - qcom,sm8450-pcie-ep
reg:
items:
@@ -35,24 +34,12 @@ properties:
- const: mmio
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
- - description: PCIe Sleep clock
- - description: PCIe Reference clock
+ minItems: 7
+ maxItems: 8
clock-names:
- items:
- - const: aux
- - const: cfg
- - const: bus_master
- - const: bus_slave
- - const: slave_q2a
- - const: sleep
- - const: ref
+ minItems: 7
+ maxItems: 8
qcom,perst-regs:
description: Reference to a syscon representing TCSR followed by the two
@@ -105,7 +92,6 @@ required:
- reg-names
- clocks
- clock-names
- - qcom,perst-regs
- interrupts
- interrupt-names
- reset-gpios
@@ -113,6 +99,64 @@ required:
- reset-names
- power-domains
+allOf:
+ - $ref: pci-ep.yaml#
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - qcom,sdx55-pcie-ep
+ then:
+ properties:
+ 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
+ - description: PCIe Sleep clock
+ - description: PCIe Reference clock
+ clock-names:
+ items:
+ - const: aux
+ - const: cfg
+ - const: bus_master
+ - const: bus_slave
+ - const: slave_q2a
+ - const: sleep
+ - const: ref
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - qcom,sm8450-pcie-ep
+ then:
+ properties:
+ 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
+ - description: PCIe Reference clock
+ - description: PCIe DDRSS SF TBU clock
+ - description: PCIe AGGRE NOC AXI clock
+ clock-names:
+ items:
+ - const: aux
+ - const: cfg
+ - const: bus_master
+ - const: bus_slave
+ - const: slave_q2a
+ - const: ref
+ - const: ddrss_sf_tbu
+ - const: aggre_noc_axi
+
unevaluatedProperties: false
examples:
diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
index dd84f1487bed..54f07852d279 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
@@ -25,8 +25,10 @@ properties:
- qcom,pcie-ipq4019
- qcom,pcie-ipq8074
- qcom,pcie-qcs404
+ - qcom,pcie-sa8540p
- qcom,pcie-sc7280
- qcom,pcie-sc8180x
+ - qcom,pcie-sc8280xp
- qcom,pcie-sdm845
- qcom,pcie-sm8150
- qcom,pcie-sm8250
@@ -181,6 +183,7 @@ allOf:
enum:
- qcom,pcie-sc7280
- qcom,pcie-sc8180x
+ - qcom,pcie-sc8280xp
- qcom,pcie-sm8250
- qcom,pcie-sm8450-pcie0
- qcom,pcie-sm8450-pcie1
@@ -599,6 +602,36 @@ allOf:
- const: pci # PCIe core reset
- if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - qcom,pcie-sa8540p
+ - qcom,pcie-sc8280xp
+ then:
+ properties:
+ clocks:
+ minItems: 8
+ maxItems: 9
+ clock-names:
+ minItems: 8
+ items:
+ - const: aux # Auxiliary clock
+ - const: cfg # Configuration clock
+ - const: bus_master # Master AXI clock
+ - const: bus_slave # Slave AXI clock
+ - const: slave_q2a # Slave Q2A clock
+ - const: ddrss_sf_tbu # PCIe SF TBU clock
+ - const: noc_aggr_4 # NoC aggregate 4 clock
+ - const: noc_aggr_south_sf # NoC aggregate South SF clock
+ - const: cnoc_qx # Configuration NoC QX clock
+ resets:
+ maxItems: 1
+ reset-names:
+ items:
+ - const: pci # PCIe core reset
+
+ - if:
not:
properties:
compatible:
@@ -626,8 +659,6 @@ allOf:
- resets
- reset-names
- # Newer chipsets support either 1 or 8 MSI vectors
- # On older chipsets it's always 1 MSI vector
- if:
properties:
compatible:
@@ -662,7 +693,40 @@ allOf:
- const: msi5
- const: msi6
- const: msi7
- else:
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - qcom,pcie-sc8280xp
+ then:
+ properties:
+ interrupts:
+ minItems: 4
+ maxItems: 4
+ interrupt-names:
+ items:
+ - const: msi0
+ - const: msi1
+ - const: msi2
+ - const: msi3
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - qcom,pcie-apq8064
+ - qcom,pcie-apq8084
+ - qcom,pcie-ipq4019
+ - qcom,pcie-ipq6018
+ - qcom,pcie-ipq8064
+ - qcom,pcie-ipq8064-v2
+ - qcom,pcie-ipq8074
+ - qcom,pcie-qcs404
+ - qcom,pcie-sa8540p
+ then:
properties:
interrupts:
maxItems: 1
diff --git a/Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml b/Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml
index 195e6afeb169..844fc7142302 100644
--- a/Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml
@@ -51,6 +51,12 @@ properties:
description: A phandle to the PCIe power up reset line.
maxItems: 1
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ const: pcie_aux
+
pwren-gpios:
description: Should specify the GPIO for controlling the PCI bus device power on.
maxItems: 1
@@ -66,6 +72,7 @@ required:
- interrupt-map-mask
- interrupt-map
- clocks
+ - clock-names
- resets
- pwren-gpios
- reset-gpios
@@ -104,6 +111,7 @@ examples:
<0x0 0x0 0x0 0x2 &plic0 58>,
<0x0 0x0 0x0 0x3 &plic0 59>,
<0x0 0x0 0x0 0x4 &plic0 60>;
+ clock-names = "pcie_aux";
clocks = <&prci FU740_PRCI_CLK_PCIE_AUX>;
resets = <&prci 4>;
pwren-gpios = <&gpio 5 0>;