linux-kernel - [tip: irq/core] dt-bindings: interrupt-controller: mpm: Pass MSG RAM slice through phandle

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Message-ID: <170207007784.398.672518304250442085.tip-bot2@tip-bot2>
Date:   Fri, 08 Dec 2023 21:14:37 -0000
From:   "tip-bot2 for Konrad Dybcio" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        x86@...nel.org, linux-kernel@...r.kernel.org, maz@...nel.org
Subject: [tip: irq/core] dt-bindings: interrupt-controller: mpm: Pass MSG RAM
 slice through phandle

The following commit has been merged into the irq/core branch of tip:

Commit-ID:     3ff156f0d4e71f96b15f9b16f3b6a82b617c4bb7
Gitweb:        https://git.kernel.org/tip/3ff156f0d4e71f96b15f9b16f3b6a82b617c4bb7
Author:        Konrad Dybcio <konrad.dybcio@...aro.org>
AuthorDate:    Mon, 27 Nov 2023 16:52:12 +01:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Fri, 08 Dec 2023 22:06:36 +01:00

dt-bindings: interrupt-controller: mpm: Pass MSG RAM slice through phandle

Due to the wild nature of the Qualcomm RPM Message RAM, the kernel can't
really use 'reg' to point to the MPM's slice of Message RAM without cutting
into an already-defined RPM MSG RAM node used for GLINK and SMEM.

Document passing the register space as a slice of SRAM through the
qcom,rpm-msg-ram property. This also makes 'reg' deprecated.

Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Link: https://lore.kernel.org/r/20230328-topic-msgram_mpm-v7-1-6ee2bfeaac2c@linaro.org

---
 Documentation/devicetree/bindings/interrupt-controller/qcom,mpm.yaml | 52 +++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 35 insertions(+), 17 deletions(-)

diff --git a/Documentation/devicetree/bindings/interrupt-controller/qcom,mpm.yaml b/Documentation/devicetree/bindings/interrupt-controller/qcom,mpm.yaml
index 509d20c..4ce7912 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/qcom,mpm.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/qcom,mpm.yaml
@@ -29,6 +29,12 @@ properties:
     maxItems: 1
     description:
       Specifies the base address and size of vMPM registers in RPM MSG RAM.
+    deprecated: true
+
+  qcom,rpm-msg-ram:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to the APSS MPM slice of the RPM Message RAM
 
   interrupts:
     maxItems: 1
@@ -64,33 +70,45 @@ properties:
 
 required:
   - compatible
-  - reg
   - interrupts
   - mboxes
   - interrupt-controller
   - '#interrupt-cells'
   - qcom,mpm-pin-count
   - qcom,mpm-pin-map
+  - qcom,rpm-msg-ram
 
 additionalProperties: false
 
 examples:
   - |
     #include <dt-bindings/interrupt-controller/arm-gic.h>
-    mpm: interrupt-controller@...01b8 {
-        compatible = "qcom,mpm";
-        interrupts = <GIC_SPI 197 IRQ_TYPE_EDGE_RISING>;
-        reg = <0x45f01b8 0x1000>;
-        mboxes = <&apcs_glb 1>;
-        interrupt-controller;
-        #interrupt-cells = <2>;
-        interrupt-parent = <&intc>;
-        qcom,mpm-pin-count = <96>;
-        qcom,mpm-pin-map = <2 275>,
-                           <5 296>,
-                           <12 422>,
-                           <24 79>,
-                           <86 183>,
-                           <90 260>,
-                           <91 260>;
+
+    remoteproc-rpm {
+        compatible = "qcom,msm8998-rpm-proc", "qcom,rpm-proc";
+
+        glink-edge {
+            compatible = "qcom,glink-rpm";
+
+            interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
+            qcom,rpm-msg-ram = <&rpm_msg_ram>;
+            mboxes = <&apcs_glb 0>;
+        };
+
+        mpm: interrupt-controller {
+            compatible = "qcom,mpm";
+            qcom,rpm-msg-ram = <&apss_mpm>;
+            interrupts = <GIC_SPI 197 IRQ_TYPE_EDGE_RISING>;
+            mboxes = <&apcs_glb 1>;
+            interrupt-controller;
+            #interrupt-cells = <2>;
+            interrupt-parent = <&intc>;
+            qcom,mpm-pin-count = <96>;
+            qcom,mpm-pin-map = <2 275>,
+                               <5 296>,
+                               <12 422>,
+                               <24 79>,
+                               <86 183>,
+                               <91 260>;
+        };
     };