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From: "Peng Fan (OSS)" <peng.fan@oss.nxp.com>
Date: Fri, 26 Jan 2024 14:29:14 +0800
Subject: [PATCH v5 1/4] dt-bindings: mailbox: fsl,mu: add i.MX95
 Generic/ELE/V2X MU compatible
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To: Jassi Brar <jassisinghbrar@gmail.com>, Rob Herring <robh+dt@kernel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, 
 Conor Dooley <conor+dt@kernel.org>, Dong Aisheng <aisheng.dong@nxp.com>, 
 Shawn Guo <shawnguo@kernel.org>, Sascha Hauer <s.hauer@pengutronix.de>, 
 Pengutronix Kernel Team <kernel@pengutronix.de>, 
 Fabio Estevam <festevam@gmail.com>, NXP Linux Team <linux-imx@nxp.com>
Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, 
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From: Peng Fan <peng.fan@nxp.com>

Add i.MX95 Generic, Secure Enclave and V2X Message Unit compatible string.
And the MUs in AONMIX has internal RAMs for SCMI shared buffer usage.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 .../devicetree/bindings/mailbox/fsl,mu.yaml        | 58 +++++++++++++++++++++-
 1 file changed, 57 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
index 12e7a7d536a3..33140f72da6d 100644
--- a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
+++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
@@ -29,8 +29,11 @@ properties:
       - const: fsl,imx8ulp-mu
       - const: fsl,imx8-mu-scu
       - const: fsl,imx8-mu-seco
-      - const: fsl,imx93-mu-s4
       - const: fsl,imx8ulp-mu-s4
+      - const: fsl,imx93-mu-s4
+      - const: fsl,imx95-mu
+      - const: fsl,imx95-mu-ele
+      - const: fsl,imx95-mu-v2x
       - items:
           - const: fsl,imx93-mu
           - const: fsl,imx8ulp-mu
@@ -95,6 +98,19 @@ properties:
   power-domains:
     maxItems: 1
 
+  ranges: true
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 1
+
+patternProperties:
+  "^sram@[a-f0-9]+":
+    $ref: /schemas/sram/sram.yaml#
+    unevaluatedProperties: false
+
 required:
   - compatible
   - reg
@@ -122,6 +138,15 @@ allOf:
         required:
           - interrupt-names
 
+  - if:
+      not:
+        properties:
+          compatible:
+            const: fsl,imx95-mu
+    then:
+      patternProperties:
+        "^sram@[a-f0-9]+": false
+
 additionalProperties: false
 
 examples:
@@ -134,3 +159,34 @@ examples:
         interrupts = <GIC_SPI 176 IRQ_TYPE_LEVEL_HIGH>;
         #mbox-cells = <2>;
     };
+
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    mu2: mailbox@445b0000 {
+        compatible = "fsl,imx95-mu";
+        reg = <0x445b0000 0x10000>;
+        ranges;
+        interrupts = <GIC_SPI 226 IRQ_TYPE_LEVEL_HIGH>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        #mbox-cells = <2>;
+
+        sram@445b1000 {
+            compatible = "mmio-sram";
+            reg = <0x445b1000 0x400>;
+            ranges = <0x0 0x445b1000 0x400>;
+            #address-cells = <1>;
+            #size-cells = <1>;
+
+            scmi_buf0: scmi-sram-section@0 {
+                compatible = "arm,scmi-shmem";
+                reg = <0x0 0x80>;
+            };
+
+            scmi_buf1: scmi-sram-section@80 {
+                compatible = "arm,scmi-shmem";
+                reg = <0x80 0x80>;
+            };
+        };
+    };

-- 
2.37.1