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Message-Id: <20240702162652.1349121-1-matthew.gerlach@linux.intel.com>
Date: Tue, 2 Jul 2024 11:26:52 -0500
From: matthew.gerlach@...ux.intel.com
To: lpieralisi@...nel.org,
kw@...ux.com,
robh@...nel.org,
bhelgaas@...gle.com,
krzk+dt@...nel.org,
conor+dt@...nel.org,
joyce.ooi@...el.com,
linux-pci@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Matthew Gerlach <matthew.gerlach@...ux.intel.com>
Subject: [PATCH v8] dt-bindings: PCI: altera: Convert to YAML
From: Matthew Gerlach <matthew.gerlach@...ux.intel.com>
Convert the device tree bindings for the Altera Root Port PCIe controller
from text to YAML. Update the entries in the interrupt-map field to have
the correct number of address cells for the interrupt parent.
Signed-off-by: Matthew Gerlach <matthew.gerlach@...ux.intel.com>
---
v8:
- Precisely constrain the number of items for reg and reg-names properties.
Constrain maxItems to 2 for altr,pcie-root-port-1.0.
Constrain minItems to 3 for altr,pcie-root-port-2.0.
v7:
- Keep original example dts, but fix warnings of interrupt-map field.
v6:
- Fix dt_binding_check warnings by creating interrupt-controller subnode
and fixing interrupt-map.
- Updated filename in MAINTAINERS.
v5:
- add interrupt-controller #interrupt-cells to required field
- don't touch original example dts
v4:
- reorder reg-names to match original binding
- move reg and reg-names to top level with limits.
v3:
- Added years to copyright
- Correct order in file of allOf and unevaluatedProperties
- remove items: in compatible field
- fix reg and reg-names constraints
- replace deprecated pci-bus.yaml with pci-host-bridge.yaml
- fix entries in ranges property
- remove device_type from required
v2:
- Move allOf: to bottom of file, just like example-schema is showing
- add constraint for reg and reg-names
- remove unneeded device_type
- drop #address-cells and #size-cells
- change minItems to maxItems for interrupts:
- change msi-parent to just "msi-parent: true"
- cleaned up required:
- make subject consistent with other commits coverting to YAML
- s/overt/onvert/g
v8 fix
---
.../devicetree/bindings/pci/altera-pcie.txt | 50 --------
.../bindings/pci/altr,pcie-root-port.yaml | 114 ++++++++++++++++++
MAINTAINERS | 2 +-
3 files changed, 115 insertions(+), 51 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/pci/altera-pcie.txt
create mode 100644 Documentation/devicetree/bindings/pci/altr,pcie-root-port.yaml
diff --git a/Documentation/devicetree/bindings/pci/altera-pcie.txt b/Documentation/devicetree/bindings/pci/altera-pcie.txt
deleted file mode 100644
index 816b244a221e..000000000000
--- a/Documentation/devicetree/bindings/pci/altera-pcie.txt
+++ /dev/null
@@ -1,50 +0,0 @@
-* Altera PCIe controller
-
-Required properties:
-- compatible : should contain "altr,pcie-root-port-1.0" or "altr,pcie-root-port-2.0"
-- reg: a list of physical base address and length for TXS and CRA.
- For "altr,pcie-root-port-2.0", additional HIP base address and length.
-- reg-names: must include the following entries:
- "Txs": TX slave port region
- "Cra": Control register access region
- "Hip": Hard IP region (if "altr,pcie-root-port-2.0")
-- interrupts: specifies the interrupt source of the parent interrupt
- controller. The format of the interrupt specifier depends
- on the parent interrupt controller.
-- device_type: must be "pci"
-- #address-cells: set to <3>
-- #size-cells: set to <2>
-- #interrupt-cells: set to <1>
-- ranges: describes the translation of addresses for root ports and
- standard PCI regions.
-- interrupt-map-mask and interrupt-map: standard PCI properties to define the
- mapping of the PCIe interface to interrupt numbers.
-
-Optional properties:
-- msi-parent: Link to the hardware entity that serves as the MSI controller
- for this PCIe controller.
-- bus-range: PCI bus numbers covered
-
-Example
- pcie_0: pcie@...000000 {
- compatible = "altr,pcie-root-port-1.0";
- reg = <0xc0000000 0x20000000>,
- <0xff220000 0x00004000>;
- reg-names = "Txs", "Cra";
- interrupt-parent = <&hps_0_arm_gic_0>;
- interrupts = <0 40 4>;
- interrupt-controller;
- #interrupt-cells = <1>;
- bus-range = <0x0 0xFF>;
- device_type = "pci";
- msi-parent = <&msi_to_gic_gen_0>;
- #address-cells = <3>;
- #size-cells = <2>;
- interrupt-map-mask = <0 0 0 7>;
- interrupt-map = <0 0 0 1 &pcie_0 1>,
- <0 0 0 2 &pcie_0 2>,
- <0 0 0 3 &pcie_0 3>,
- <0 0 0 4 &pcie_0 4>;
- ranges = <0x82000000 0x00000000 0x00000000 0xc0000000 0x00000000 0x10000000
- 0x82000000 0x00000000 0x10000000 0xd0000000 0x00000000 0x10000000>;
- };
diff --git a/Documentation/devicetree/bindings/pci/altr,pcie-root-port.yaml b/Documentation/devicetree/bindings/pci/altr,pcie-root-port.yaml
new file mode 100644
index 000000000000..52533fccc134
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/altr,pcie-root-port.yaml
@@ -0,0 +1,114 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) 2015, 2019, 2024, Intel Corporation
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/altr,pcie-root-port.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Altera PCIe Root Port
+
+maintainers:
+ - Matthew Gerlach <matthew.gerlach@...ux.intel.com>
+
+properties:
+ compatible:
+ enum:
+ - altr,pcie-root-port-1.0
+ - altr,pcie-root-port-2.0
+
+ reg:
+ items:
+ - description: TX slave port region
+ - description: Control register access region
+ - description: Hard IP region
+ minItems: 2
+
+ reg-names:
+ items:
+ - const: Txs
+ - const: Cra
+ - const: Hip
+ minItems: 2
+
+ interrupts:
+ maxItems: 1
+
+ interrupt-controller: true
+
+ interrupt-map-mask:
+ items:
+ - const: 0
+ - const: 0
+ - const: 0
+ - const: 7
+
+ interrupt-map:
+ maxItems: 4
+
+ "#interrupt-cells":
+ const: 1
+
+ msi-parent: true
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - interrupts
+ - "#interrupt-cells"
+ - interrupt-controller
+ - interrupt-map
+ - interrupt-map-mask
+
+allOf:
+ - $ref: /schemas/pci/pci-host-bridge.yaml#
+ - if:
+ properties:
+ compatible:
+ enum:
+ - altr,pcie-root-port-1.0
+ then:
+ properties:
+ reg:
+ maxItems: 2
+
+ reg-names:
+ maxItems: 2
+
+ else:
+ properties:
+ reg:
+ minItems: 3
+
+ reg-names:
+ minItems: 3
+
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ pcie_0: pcie@...000000 {
+ compatible = "altr,pcie-root-port-1.0";
+ reg = <0xc0000000 0x20000000>,
+ <0xff220000 0x00004000>;
+ reg-names = "Txs", "Cra";
+ interrupt-parent = <&hps_0_arm_gic_0>;
+ interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ bus-range = <0x0 0xff>;
+ device_type = "pci";
+ msi-parent = <&msi_to_gic_gen_0>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+ interrupt-map-mask = <0 0 0 7>;
+ interrupt-map = <0 0 0 1 &pcie_0 0 0 0 1>,
+ <0 0 0 2 &pcie_0 0 0 0 2>,
+ <0 0 0 3 &pcie_0 0 0 0 3>,
+ <0 0 0 4 &pcie_0 0 0 0 4>;
+ ranges = <0x82000000 0x00000000 0x00000000 0xc0000000 0x00000000 0x10000000>,
+ <0x82000000 0x00000000 0x10000000 0xd0000000 0x00000000 0x10000000>;
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index cbc186250383..ff2d2c110e41 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -17274,7 +17274,7 @@ PCI DRIVER FOR ALTERA PCIE IP
M: Joyce Ooi <joyce.ooi@...el.com>
L: linux-pci@...r.kernel.org
S: Supported
-F: Documentation/devicetree/bindings/pci/altera-pcie.txt
+F: Documentation/devicetree/bindings/pci/altr,pcie-root-port.yaml
F: drivers/pci/controller/pcie-altera.c
PCI DRIVER FOR APPLIEDMICRO XGENE
--
2.34.1
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