linux-kernel - [PATCH v2 1/3] dt-bindings: mailbox: fix the mpfs' reg property

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Date:   Wed, 24 Aug 2022 08:08:10 +0100
From:   Conor Dooley <conor.dooley@...rochip.com>
To:     Jassi Brar <jassisinghbrar@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
CC:     Conor Dooley <conor.dooley@...rochip.com>,
        Daire McNamara <daire.mcnamara@...rochip.com>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-riscv@...ts.infradead.org>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v2 1/3] dt-bindings: mailbox: fix the mpfs' reg property

The "data" region of the PolarFire SoC's system controller mailbox is
not one continuous register space - the system controller's QSPI sits
between the control and data registers. Split the "data" reg into two
parts: "data" & "control".

Fixes: 213556235526 ("dt-bindings: soc/microchip: update syscontroller compatibles")
Fixes: ed9543d6f2c4 ("dt-bindings: add bindings for polarfire soc mailbox")
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
---
 .../bindings/mailbox/microchip,mpfs-mailbox.yaml  | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/mailbox/microchip,mpfs-mailbox.yaml b/Documentation/devicetree/bindings/mailbox/microchip,mpfs-mailbox.yaml
index 082d397d3e89..935937c67133 100644
--- a/Documentation/devicetree/bindings/mailbox/microchip,mpfs-mailbox.yaml
+++ b/Documentation/devicetree/bindings/mailbox/microchip,mpfs-mailbox.yaml
@@ -14,9 +14,15 @@ properties:
     const: microchip,mpfs-mailbox
 
   reg:
-    items:
-      - description: mailbox data registers
-      - description: mailbox interrupt registers
+    oneOf:
+      - items:
+          - description: mailbox control & data registers
+          - description: mailbox interrupt registers
+        deprecated: true
+      - items:
+          - description: mailbox control registers
+          - description: mailbox interrupt registers
+          - description: mailbox data registers
 
   interrupts:
     maxItems: 1
@@ -39,7 +45,8 @@ examples:
       #size-cells = <2>;
       mbox: mailbox@...20000 {
         compatible = "microchip,mpfs-mailbox";
-        reg = <0x0 0x37020000 0x0 0x1000>, <0x0 0x2000318c 0x0 0x40>;
+        reg = <0x0 0x37020000 0x0 0x58>, <0x0 0x2000318C 0x0 0x40>,
+              <0x0 0x37020800 0x0 0x100>;
         interrupt-parent = <&L1>;
         interrupts = <96>;
         #mbox-cells = <1>;
-- 
2.36.1