linux-kernel - [PATCH 1/5] dt-bindings: bus: add documentation for the IMX AIPSTZ bridge

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Message-Id: <20250221191909.31874-2-laurentiumihalcea111@gmail.com>
Date: Fri, 21 Feb 2025 14:19:05 -0500
From: Laurentiu Mihalcea <laurentiumihalcea111@...il.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Daniel Baluta <daniel.baluta@....com>,
	Shengjiu Wang <shengjiu.wang@....com>
Cc: Pengutronix Kernel Team <kernel@...gutronix.de>,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/5] dt-bindings: bus: add documentation for the IMX AIPSTZ bridge

From: Laurentiu Mihalcea <laurentiu.mihalcea@....com>

Add documentation for IMX AIPSTZ bridge.

Co-developed-by: Daniel Baluta <daniel.baluta@....com>
Signed-off-by: Daniel Baluta <daniel.baluta@....com>
Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@....com>
---
 .../bindings/bus/fsl,imx8mp-aipstz.yaml       | 62 +++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/bus/fsl,imx8mp-aipstz.yaml

diff --git a/Documentation/devicetree/bindings/bus/fsl,imx8mp-aipstz.yaml b/Documentation/devicetree/bindings/bus/fsl,imx8mp-aipstz.yaml
new file mode 100644
index 000000000000..b0d6eaf70a84
--- /dev/null
+++ b/Documentation/devicetree/bindings/bus/fsl,imx8mp-aipstz.yaml
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/bus/fsl,imx8mp-aipstz.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Secure AHB to IP Slave bus (AIPSTZ) bridge
+
+description:
+  The secure AIPS bridge (AIPSTZ) acts as a bridge for AHB masters
+  issuing transactions to IP Slave peripherals. Additionally, this module
+  offers access control configurations meant to restrict which peripherals
+  a master can access.
+
+maintainers:
+  - Laurentiu Mihalcea <laurentiu.mihalcea@....com>
+
+select:
+  properties:
+    compatible:
+      contains:
+        const: fsl,imx8mp-aipstz
+  required:
+    - compatible
+
+properties:
+  compatible:
+    items:
+      - const: fsl,imx8mp-aipstz
+      - const: simple-bus
+
+  reg:
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+  "#access-controller-cells":
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - power-domains
+  - "#access-controller-cells"
+
+allOf:
+  - $ref: /schemas/simple-bus.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    bus@...f0000 {
+      compatible = "fsl,imx8mp-aipstz", "simple-bus";
+      reg = <0x30df0000 0x10000>;
+      power-domains = <&pgc_audio>;
+      #address-cells = <1>;
+      #size-cells = <1>;
+      #access-controller-cells = <0>;
+      ranges;
+    };
-- 
2.34.1