linux-kernel - [PATCH v5 1/7] dt-bindings: soc: ti: Add AM65 peripheral virtualization unit

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Message-ID: <78294ee7ac10ce9f6fc3a57ba10cee92369d8aa8.1725816753.git.jan.kiszka@siemens.com>
Date: Sun,  8 Sep 2024 19:32:27 +0200
From: Jan Kiszka <jan.kiszka@...mens.com>
To: Nishanth Menon <nm@...com>,
	Santosh Shilimkar <ssantosh@...nel.org>,
	Vignesh Raghavendra <vigneshr@...com>,
	Tero Kristo <kristo@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org,
	linux-pci@...r.kernel.org,
	Siddharth Vadapalli <s-vadapalli@...com>,
	Bao Cheng Su <baocheng.su@...mens.com>,
	Hua Qian Li <huaqian.li@...mens.com>,
	Diogo Ivo <diogo.ivo@...mens.com>,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v5 1/7] dt-bindings: soc: ti: Add AM65 peripheral virtualization unit

From: Jan Kiszka <jan.kiszka@...mens.com>

The PVU allows to define a limited set of mappings for incoming DMA
requests to the system memory. It is not a real IOMMU, thus hooked up
under the TI SoC bindings.

Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 .../bindings/soc/ti/ti,am654-pvu.yaml         | 51 +++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/ti/ti,am654-pvu.yaml

diff --git a/Documentation/devicetree/bindings/soc/ti/ti,am654-pvu.yaml b/Documentation/devicetree/bindings/soc/ti/ti,am654-pvu.yaml
new file mode 100644
index 000000000000..e4a5fc47d674
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/ti/ti,am654-pvu.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (c) Siemens AG, 2024
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/ti/ti,am654-pvu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI AM654 Peripheral Virtualization Unit
+
+maintainers:
+  - Jan Kiszka <jan.kiszka@...mens.com>
+
+properties:
+  compatible:
+    enum:
+      - ti,am654-pvu
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: cfg
+      - const: tlbif
+
+  interrupts:
+    items:
+      - description: fault interrupt
+
+  interrupt-names:
+    items:
+      - const: pvu
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-names
+
+additionalProperties: false
+
+examples:
+  - |
+    iommu@...80000 {
+        compatible = "ti,am654-pvu";
+        reg = <0x30f80000 0x1000>,
+              <0x36000000 0x100000>;
+        reg-names = "cfg", "tlbif";
+        interrupts-extended = <&intr_main_navss 390>;
+        interrupt-names = "pvu";
+    };
-- 
2.43.0