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Message-ID: <20210603133450.24710-1-kishon@ti.com>
Date: Thu, 3 Jun 2021 19:04:50 +0530
From: Kishon Vijay Abraham I <kishon@...com>
To: Nishanth Menon <nm@...com>, Tero Kristo <kristo@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Bjorn Helgaas <bhelgaas@...gle.com>
CC: <linux-arm-kernel@...ts.infradead.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
Kishon Vijay Abraham I <kishon@...com>,
Lokesh Vutla <lokeshvutla@...com>, <linux-pci@...r.kernel.org>
Subject: [PATCH v2] dt-bindings: PCI: ti,am65: Convert PCIe host/endpoint mode dt-bindings to YAML
Convert PCIe host/endpoint mode dt-bindings for TI's AM65/Keystone SoC
to YAML binding.
Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
---
Changes from v1:
1) Removed '"' for the included schemas
2) Used default #address-cells and #size-cells for the example
.../devicetree/bindings/pci/pci-keystone.txt | 115 ------------------
.../bindings/pci/ti,am65-pci-ep.yaml | 74 +++++++++++
.../bindings/pci/ti,am65-pci-host.yaml | 96 +++++++++++++++
3 files changed, 170 insertions(+), 115 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/pci/pci-keystone.txt
create mode 100644 Documentation/devicetree/bindings/pci/ti,am65-pci-ep.yaml
create mode 100644 Documentation/devicetree/bindings/pci/ti,am65-pci-host.yaml
diff --git a/Documentation/devicetree/bindings/pci/pci-keystone.txt b/Documentation/devicetree/bindings/pci/pci-keystone.txt
deleted file mode 100644
index 47202a2938f2..000000000000
--- a/Documentation/devicetree/bindings/pci/pci-keystone.txt
+++ /dev/null
@@ -1,115 +0,0 @@
-TI Keystone PCIe interface
-
-Keystone PCI host Controller is based on the Synopsys DesignWare PCI
-hardware version 3.65. It shares common functions with the PCIe DesignWare
-core driver and inherits common properties defined in
-Documentation/devicetree/bindings/pci/designware-pcie.txt
-
-Please refer to Documentation/devicetree/bindings/pci/designware-pcie.txt
-for the details of DesignWare DT bindings. Additional properties are
-described here as well as properties that are not applicable.
-
-Required Properties:-
-
-compatibility: Should be "ti,keystone-pcie" for RC on Keystone2 SoC
- Should be "ti,am654-pcie-rc" for RC on AM654x SoC
-reg: Three register ranges as listed in the reg-names property
-reg-names: "dbics" for the DesignWare PCIe registers, "app" for the
- TI specific application registers, "config" for the
- configuration space address
-
-pcie_msi_intc : Interrupt controller device node for MSI IRQ chip
- interrupt-cells: should be set to 1
- interrupts: GIC interrupt lines connected to PCI MSI interrupt lines
- (required if the compatible is "ti,keystone-pcie")
-msi-map: As specified in Documentation/devicetree/bindings/pci/pci-msi.txt
- (required if the compatible is "ti,am654-pcie-rc".
-
-ti,syscon-pcie-id : phandle to the device control module required to set device
- id and vendor id.
-ti,syscon-pcie-mode : phandle to the device control module required to configure
- PCI in either RC mode or EP mode.
-
- Example:
- pcie_msi_intc: msi-interrupt-controller {
- interrupt-controller;
- #interrupt-cells = <1>;
- interrupt-parent = <&gic>;
- interrupts = <GIC_SPI 30 IRQ_TYPE_EDGE_RISING>,
- <GIC_SPI 31 IRQ_TYPE_EDGE_RISING>,
- <GIC_SPI 32 IRQ_TYPE_EDGE_RISING>,
- <GIC_SPI 33 IRQ_TYPE_EDGE_RISING>,
- <GIC_SPI 34 IRQ_TYPE_EDGE_RISING>,
- <GIC_SPI 35 IRQ_TYPE_EDGE_RISING>,
- <GIC_SPI 36 IRQ_TYPE_EDGE_RISING>,
- <GIC_SPI 37 IRQ_TYPE_EDGE_RISING>;
- };
-
-pcie_intc: Interrupt controller device node for Legacy IRQ chip
- interrupt-cells: should be set to 1
-
- Example:
- pcie_intc: legacy-interrupt-controller {
- interrupt-controller;
- #interrupt-cells = <1>;
- interrupt-parent = <&gic>;
- interrupts = <GIC_SPI 26 IRQ_TYPE_EDGE_RISING>,
- <GIC_SPI 27 IRQ_TYPE_EDGE_RISING>,
- <GIC_SPI 28 IRQ_TYPE_EDGE_RISING>,
- <GIC_SPI 29 IRQ_TYPE_EDGE_RISING>;
- };
-
-Optional properties:-
- phys: phandle to generic Keystone SerDes PHY for PCI
- phy-names: name of the generic Keystone SerDes PHY for PCI
- - If boot loader already does PCI link establishment, then phys and
- phy-names shouldn't be present.
- interrupts: platform interrupt for error interrupts.
-
-DesignWare DT Properties not applicable for Keystone PCI
-
-1. pcie_bus clock-names not used. Instead, a phandle to phys is used.
-
-AM654 PCIe Endpoint
-===================
-
-Required Properties:-
-
-compatibility: Should be "ti,am654-pcie-ep" for EP on AM654x SoC
-reg: Four register ranges as listed in the reg-names property
-reg-names: "dbics" for the DesignWare PCIe registers, "app" for the
- TI specific application registers, "atu" for the
- Address Translation Unit configuration registers and
- "addr_space" used to map remote RC address space
-num-ib-windows: As specified in
- Documentation/devicetree/bindings/pci/designware-pcie.txt
-num-ob-windows: As specified in
- Documentation/devicetree/bindings/pci/designware-pcie.txt
-num-lanes: As specified in
- Documentation/devicetree/bindings/pci/designware-pcie.txt
-power-domains: As documented by the generic PM domain bindings in
- Documentation/devicetree/bindings/power/power_domain.txt.
-ti,syscon-pcie-mode: phandle to the device control module required to configure
- PCI in either RC mode or EP mode.
-
-Optional properties:-
-
-phys: list of PHY specifiers (used by generic PHY framework)
-phy-names: must be "pcie-phy0", "pcie-phy1", "pcie-phyN".. based on the
- number of lanes as specified in *num-lanes* property.
-("phys" and "phy-names" DT bindings are specified in
-Documentation/devicetree/bindings/phy/phy-bindings.txt)
-interrupts: platform interrupt for error interrupts.
-
-pcie-ep {
- compatible = "ti,am654-pcie-ep";
- reg = <0x5500000 0x1000>, <0x5501000 0x1000>,
- <0x10000000 0x8000000>, <0x5506000 0x1000>;
- reg-names = "app", "dbics", "addr_space", "atu";
- power-domains = <&k3_pds 120>;
- ti,syscon-pcie-mode = <&pcie0_mode>;
- num-lanes = <1>;
- num-ib-windows = <16>;
- num-ob-windows = <16>;
- interrupts = <GIC_SPI 340 IRQ_TYPE_EDGE_RISING>;
-};
diff --git a/Documentation/devicetree/bindings/pci/ti,am65-pci-ep.yaml b/Documentation/devicetree/bindings/pci/ti,am65-pci-ep.yaml
new file mode 100644
index 000000000000..78c217d362a7
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/ti,am65-pci-ep.yaml
@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2021 Texas Instruments Incorporated - http://www.ti.com/
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/ti,am65-pci-ep.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI AM65 PCI Endpoint
+
+maintainers:
+ - Kishon Vijay Abraham I <kishon@...com>
+
+allOf:
+ - $ref: pci-ep.yaml#
+
+properties:
+ compatible:
+ enum:
+ - ti,am654-pcie-ep
+
+ reg:
+ maxItems: 4
+
+ reg-names:
+ items:
+ - const: app
+ - const: dbics
+ - const: addr_space
+ - const: atu
+
+ power-domains:
+ maxItems: 1
+
+ ti,syscon-pcie-mode:
+ description: Phandle to the SYSCON entry required for configuring PCIe in RC or EP mode.
+ $ref: /schemas/types.yaml#/definitions/phandle
+
+ interrupts:
+ minItems: 1
+
+ dma-coherent: true
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - max-link-speed
+ - power-domains
+ - ti,syscon-pcie-mode
+ - dma-coherent
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/soc/ti,sci_pm_domain.h>
+
+ pcie0_ep: pcie-ep@...0000 {
+ compatible = "ti,am654-pcie-ep";
+ reg = <0x5500000 0x1000>,
+ <0x5501000 0x1000>,
+ <0x10000000 0x8000000>,
+ <0x5506000 0x1000>;
+ reg-names = "app", "dbics", "addr_space", "atu";
+ power-domains = <&k3_pds 120 TI_SCI_PD_EXCLUSIVE>;
+ ti,syscon-pcie-mode = <&pcie0_mode>;
+ num-ib-windows = <16>;
+ num-ob-windows = <16>;
+ max-link-speed = <2>;
+ dma-coherent;
+ interrupts = <GIC_SPI 340 IRQ_TYPE_EDGE_RISING>;
+ };
diff --git a/Documentation/devicetree/bindings/pci/ti,am65-pci-host.yaml b/Documentation/devicetree/bindings/pci/ti,am65-pci-host.yaml
new file mode 100644
index 000000000000..834dc1c1743c
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/ti,am65-pci-host.yaml
@@ -0,0 +1,96 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2021 Texas Instruments Incorporated - http://www.ti.com/
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/ti,am65-pci-host.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI AM65 PCI Host
+
+maintainers:
+ - Kishon Vijay Abraham I <kishon@...com>
+
+allOf:
+ - $ref: /schemas/pci/pci-bus.yaml#
+
+properties:
+ compatible:
+ enum:
+ - ti,am654-pcie-rc
+ - ti,keystone-pcie
+
+ reg:
+ maxItems: 4
+
+ reg-names:
+ items:
+ - const: app
+ - const: dbics
+ - const: config
+ - const: atu
+
+ power-domains:
+ maxItems: 1
+
+ ti,syscon-pcie-id:
+ description: Phandle to the SYSCON entry required for getting PCIe device/vendor ID
+ $ref: /schemas/types.yaml#/definitions/phandle
+
+ ti,syscon-pcie-mode:
+ description: Phandle to the SYSCON entry required for configuring PCIe in RC or EP mode.
+ $ref: /schemas/types.yaml#/definitions/phandle
+
+ msi-map: true
+
+ dma-coherent: true
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - max-link-speed
+ - ti,syscon-pcie-id
+ - ti,syscon-pcie-mode
+ - ranges
+
+if:
+ properties:
+ compatible:
+ enum:
+ - ti,am654-pcie-rc
+then:
+ required:
+ - dma-coherent
+ - power-domains
+ - msi-map
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/soc/ti,sci_pm_domain.h>
+
+ pcie0_rc: pcie@...0000 {
+ compatible = "ti,am654-pcie-rc";
+ reg = <0x5500000 0x1000>,
+ <0x5501000 0x1000>,
+ <0x10000000 0x2000>,
+ <0x5506000 0x1000>;
+ reg-names = "app", "dbics", "config", "atu";
+ power-domains = <&k3_pds 120 TI_SCI_PD_EXCLUSIVE>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges = <0x81000000 0 0 0x10020000 0 0x00010000>,
+ <0x82000000 0 0x10030000 0x10030000 0 0x07FD0000>;
+ ti,syscon-pcie-id = <&pcie_devid>;
+ ti,syscon-pcie-mode = <&pcie0_mode>;
+ bus-range = <0x0 0xff>;
+ num-viewport = <16>;
+ max-link-speed = <2>;
+ dma-coherent;
+ interrupts = <GIC_SPI 340 IRQ_TYPE_EDGE_RISING>;
+ msi-map = <0x0 &gic_its 0x0 0x10000>;
+ device_type = "pci";
+ };
--
2.17.1
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