From: Mark Kettenis <kettenis@openbsd.org>
To: devicetree@vger.kernel.org
Cc: maz@kernel.org, robin.murphy@arm.com, sven@svenpeter.dev,
alyssa@rosenzweig.io, Mark Kettenis <kettenis@openbsd.org>,
Thomas Gleixner <tglx@linutronix.de>,
Rob Herring <robh+dt@kernel.org>,
Hector Martin <marcan@marcan.st>,
Bjorn Helgaas <bhelgaas@google.com>,
Jim Quinlan <jim2101024@gmail.com>,
Nicolas Saenz Julienne <nsaenz@kernel.org>,
Florian Fainelli <f.fainelli@gmail.com>,
bcm-kernel-feedback-list@broadcom.com,
Daire McNamara <daire.mcnamara@microchip.com>,
Saenz Julienne <nsaenzjulienne@suse.de>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org,
linux-rpi-kernel@lists.infradead.org
Subject: [PATCH v5 3/4] dt-bindings: pci: Add DT bindings for apple,pcie
Date: Tue, 21 Sep 2021 20:34:14 +0200 [thread overview]
Message-ID: <20210921183420.436-4-kettenis@openbsd.org> (raw)
In-Reply-To: <20210921183420.436-1-kettenis@openbsd.org>
The Apple PCIe host controller is a PCIe host controller with
multiple root ports present in Apple ARM SoC platforms, including
various iPhone and iPad devices and the "Apple Silicon" Macs.
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
---
.../devicetree/bindings/pci/apple,pcie.yaml | 161 ++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 162 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pci/apple,pcie.yaml
diff --git a/Documentation/devicetree/bindings/pci/apple,pcie.yaml b/Documentation/devicetree/bindings/pci/apple,pcie.yaml
new file mode 100644
index 000000000000..f17a8fe39e6b
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/apple,pcie.yaml
@@ -0,0 +1,161 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/apple,pcie.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Apple PCIe host controller
+
+maintainers:
+ - Mark Kettenis <kettenis@openbsd.org>
+
+description: |
+ The Apple PCIe host controller is a PCIe host controller with
+ multiple root ports present in Apple ARM SoC platforms, including
+ various iPhone and iPad devices and the "Apple Silicon" Macs.
+ The controller incorporates Synopsys DesigWare PCIe logic to
+ implements its root ports. But the ATU found on most DesignWare
+ PCIe host bridges is absent.
+
+ All root ports share a single ECAM space, but separate GPIOs are
+ used to take the PCI devices on those ports out of reset. Therefore
+ the standard "reset-gpios" and "max-link-speed" properties appear on
+ the child nodes that represent the PCI bridges that correspond to
+ the individual root ports.
+
+ MSIs are handled by the PCIe controller and translated into regular
+ interrupts. A range of 32 MSIs is provided. These 32 MSIs can be
+ distributed over the root ports as the OS sees fit by programming
+ the PCIe controller's port registers.
+
+allOf:
+ - $ref: /schemas/pci/pci-bus.yaml#
+ - $ref: /schemas/interrupt-controller/msi-controller.yaml#
+
+properties:
+ compatible:
+ items:
+ - const: apple,t8103-pcie
+ - const: apple,pcie
+
+ reg:
+ minItems: 3
+ maxItems: 5
+
+ reg-names:
+ minItems: 3
+ maxItems: 5
+ items:
+ - const: config
+ - const: rc
+ - const: port0
+ - const: port1
+ - const: port2
+
+ ranges:
+ minItems: 2
+ maxItems: 2
+
+ interrupts:
+ description:
+ Interrupt specifiers, one for each root port.
+ minItems: 1
+ maxItems: 3
+
+ msi-parent: true
+
+ msi-ranges:
+ maxItems: 1
+
+ iommu-map: true
+ iommu-map-mask: true
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - bus-range
+ - interrupts
+ - msi-controller
+ - msi-parent
+ - msi-ranges
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/apple-aic.h>
+
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ pcie0: pcie@690000000 {
+ compatible = "apple,t8103-pcie", "apple,pcie";
+ device_type = "pci";
+
+ reg = <0x6 0x90000000 0x0 0x1000000>,
+ <0x6 0x80000000 0x0 0x100000>,
+ <0x6 0x81000000 0x0 0x4000>,
+ <0x6 0x82000000 0x0 0x4000>,
+ <0x6 0x83000000 0x0 0x4000>;
+ reg-names = "config", "rc", "port0", "port1", "port2";
+
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 695 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 698 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 701 IRQ_TYPE_LEVEL_HIGH>;
+
+ msi-controller;
+ msi-parent = <&pcie0>;
+ msi-ranges = <&aic AIC_IRQ 704 IRQ_TYPE_EDGE_RISING 32>;
+
+ iommu-map = <0x100 &dart0 1 1>,
+ <0x200 &dart1 1 1>,
+ <0x300 &dart2 1 1>;
+ iommu-map-mask = <0xff00>;
+
+ bus-range = <0 3>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges = <0x43000000 0x6 0xa0000000 0x6 0xa0000000 0x0 0x20000000>,
+ <0x02000000 0x0 0xc0000000 0x6 0xc0000000 0x0 0x40000000>;
+
+ power-domains = <&ps_apcie>, <&ps_apcie_gp>, <&ps_pcie_ref>;
+ pinctrl-0 = <&pcie_pins>;
+ pinctrl-names = "default";
+
+ pci@0,0 {
+ device_type = "pci";
+ reg = <0x0 0x0 0x0 0x0 0x0>;
+ reset-gpios = <&pinctrl_ap 152 0>;
+ max-link-speed = <2>;
+
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges;
+ };
+
+ pci@1,0 {
+ device_type = "pci";
+ reg = <0x800 0x0 0x0 0x0 0x0>;
+ reset-gpios = <&pinctrl_ap 153 0>;
+ max-link-speed = <2>;
+
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges;
+ };
+
+ pci@2,0 {
+ device_type = "pci";
+ reg = <0x1000 0x0 0x0 0x0 0x0>;
+ reset-gpios = <&pinctrl_ap 33 0>;
+ max-link-speed = <1>;
+
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges;
+ };
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index c6b8a720c0bc..30bea4042e7e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1694,6 +1694,7 @@ C: irc://chat.freenode.net/asahi-dev
T: git https://github.com/AsahiLinux/linux.git
F: Documentation/devicetree/bindings/arm/apple.yaml
F: Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml
+F: Documentation/devicetree/bindings/pci/apple,pcie.yaml
F: Documentation/devicetree/bindings/pinctrl/apple,pinctrl.yaml
F: arch/arm64/boot/dts/apple/
F: drivers/irqchip/irq-apple-aic.c
--
2.33.0
next prev parent reply other threads:[~2021-09-21 18:42 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-21 18:34 [PATCH v5 0/4] Apple M1 PCIe DT bindings Mark Kettenis
2021-09-21 18:34 ` [PATCH v5 1/4] dt-bindings: interrupt-controller: Convert MSI controller to json-schema Mark Kettenis
2021-09-27 16:54 ` Rob Herring
2021-09-21 18:34 ` [PATCH v5 2/4] dt-bindings: interrupt-controller: msi: Add msi-ranges property Mark Kettenis
2021-09-27 16:55 ` Rob Herring
2021-09-21 18:34 ` Mark Kettenis [this message]
2021-09-27 17:03 ` [PATCH v5 3/4] dt-bindings: pci: Add DT bindings for apple,pcie Rob Herring
2021-09-21 18:34 ` [PATCH v5 4/4] arm64: apple: Add PCIe node Mark Kettenis
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