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From:   Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
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        <michal.simek@xilinx.com>,
        Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Subject: [PATCH v2] dt-bindings: mailbox: zynqmp_ipi: convert to yaml
Date:   Fri, 12 Nov 2021 14:16:05 +0530
Message-ID: <20211112084605.230253-1-shubhrajyoti.datta@xilinx.com>
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Convert the ipi doc to yaml.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
---
v2:
Fix the warnings reported by Rob

 .../mailbox/xlnx,zynqmp-ipi-mailbox.txt       | 127 ------------------
 .../mailbox/xlnx,zynqmp-ipi-mailbox.yaml      |  63 +++++++++
 2 files changed, 63 insertions(+), 127 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt
 create mode 100644 Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.yaml

diff --git a/Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt b/Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt
deleted file mode 100644
index ad76edccf881..000000000000
--- a/Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.txt
+++ /dev/null
@@ -1,127 +0,0 @@
-Xilinx IPI Mailbox Controller
-========================================
-
-The Xilinx IPI(Inter Processor Interrupt) mailbox controller is to manage
-messaging between two Xilinx Zynq UltraScale+ MPSoC IPI agents. Each IPI
-agent owns registers used for notification and buffers for message.
-
-               +-------------------------------------+
-               | Xilinx ZynqMP IPI Controller        |
-               +-------------------------------------+
-    +--------------------------------------------------+
-ATF                    |                     |
-                       |                     |
-                       |                     |
-    +--------------------------+             |
-                       |                     |
-                       |                     |
-    +--------------------------------------------------+
-            +------------------------------------------+
-            |  +----------------+   +----------------+ |
-Hardware    |  |  IPI Agent     |   |  IPI Buffers   | |
-            |  |  Registers     |   |                | |
-            |  |                |   |                | |
-            |  +----------------+   +----------------+ |
-            |                                          |
-            | Xilinx IPI Agent Block                   |
-            +------------------------------------------+
-
-
-Controller Device Node:
-===========================
-Required properties:
---------------------
-IPI agent node:
-- compatible:		Shall be: "xlnx,zynqmp-ipi-mailbox"
-- interrupt-parent:	Phandle for the interrupt controller
-- interrupts:		Interrupt information corresponding to the
-			interrupt-names property.
-- xlnx,ipi-id:		local Xilinx IPI agent ID
-- #address-cells:	number of address cells of internal IPI mailbox nodes
-- #size-cells:		number of size cells of internal IPI mailbox nodes
-
-Internal IPI mailbox node:
-- reg:			IPI buffers address ranges
-- reg-names:		Names of the reg resources. It should have:
-			* local_request_region
-			  - IPI request msg buffer written by local and read
-			    by remote
-			* local_response_region
-			  - IPI response msg buffer written by local and read
-			    by remote
-			* remote_request_region
-			  - IPI request msg buffer written by remote and read
-			    by local
-			* remote_response_region
-			  - IPI response msg buffer written by remote and read
-			    by local
-- #mbox-cells:		Shall be 1. It contains:
-			* tx(0) or rx(1) channel
-- xlnx,ipi-id:		remote Xilinx IPI agent ID of which the mailbox is
-			connected to.
-
-Optional properties:
---------------------
-- method:              The method of accessing the IPI agent registers.
-                       Permitted values are: "smc" and "hvc". Default is
-                       "smc".
-
-Client Device Node:
-===========================
-Required properties:
---------------------
-- mboxes:		Standard property to specify a mailbox
-			(See ./mailbox.txt)
-- mbox-names:		List of identifier  strings for each mailbox
-			channel.
-
-Example:
-===========================
-	zynqmp_ipi {
-		compatible = "xlnx,zynqmp-ipi-mailbox";
-		interrupt-parent = <&gic>;
-		interrupts = <0 29 4>;
-		xlnx,ipi-id = <0>;
-		#address-cells = <1>;
-		#size-cells = <1>;
-		ranges;
-
-		/* APU<->RPU0 IPI mailbox controller */
-		ipi_mailbox_rpu0: mailbox@ff990400 {
-			reg = <0xff990400 0x20>,
-			      <0xff990420 0x20>,
-			      <0xff990080 0x20>,
-			      <0xff9900a0 0x20>;
-			reg-names = "local_request_region",
-				    "local_response_region",
-				    "remote_request_region",
-				    "remote_response_region";
-			#mbox-cells = <1>;
-			xlnx,ipi-id = <1>;
-		};
-		/* APU<->RPU1 IPI mailbox controller */
-		ipi_mailbox_rpu1: mailbox@ff990440 {
-			reg = <0xff990440 0x20>,
-			      <0xff990460 0x20>,
-			      <0xff990280 0x20>,
-			      <0xff9902a0 0x20>;
-			reg-names = "local_request_region",
-				    "local_response_region",
-				    "remote_request_region",
-				    "remote_response_region";
-			#mbox-cells = <1>;
-			xlnx,ipi-id = <2>;
-		};
-	};
-	rpu0 {
-		...
-		mboxes = <&ipi_mailbox_rpu0 0>,
-			 <&ipi_mailbox_rpu0 1>;
-		mbox-names = "tx", "rx";
-	};
-	rpu1 {
-		...
-		mboxes = <&ipi_mailbox_rpu1 0>,
-			 <&ipi_mailbox_rpu1 1>;
-		mbox-names = "tx", "rx";
-	};
diff --git a/Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.yaml b/Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.yaml
new file mode 100644
index 000000000000..8019a7b294ef
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/xlnx,zynqmp-ipi-mailbox.yaml
@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/mailbox/xlnx,zynqmp-ipi-mailbox.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Xilinx IPI Mailbox controller bindings
+
+description:
+  The Xilinx IPI(Inter Processor Interrupt) mailbox controller is to manage
+  messaging between two Xilinx Zynq UltraScale+ MPSoC IPI agents. Each IPI
+  agent owns registers used for notification and buffers for message.
+
+maintainers:
+  - Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
+
+properties:
+  compatible:
+    const: xlnx,zynqmp-ipi-mailbox
+
+  reg:
+    maxItems: 4
+
+  interrupts:
+    maxItems: 1
+
+  "#mbox-cells":
+    const: 1
+
+  xlnx,ipi-id:
+    description: Xilinx IPI agent id
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+required:
+  - compatible
+  - xlnx,ipi-id
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+     zynqmp_ipi {
+          compatible = "xlnx,zynqmp-ipi-mailbox";
+          interrupt-parent = <&gic>;
+          interrupts = <0 29 4>;
+          xlnx,ipi-id = <0>;
+     };
+
+          /* Client node APU<->RPU0 IPI mailbox controller */
+          ipi_mailbox_rpu0: mailbox@ff990400 {
+               reg = <0xff990400 0x20>,
+                     <0xff990420 0x20>,
+                     <0xff990080 0x20>,
+                     <0xff9900a0 0x20>;
+               reg-names = "local_request_region",
+                        "local_response_region",
+                        "remote_request_region",
+                        "remote_response_region";
+               #mbox-cells = <1>;
+               xlnx,ipi-id = <1>;
+          };
+...
-- 
2.25.1