linux-kernel - [PATCH 1/2] dt-bindings: mailbox: apple,mailbox: Add generic and t6000 compatibles

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Message-Id: <20211209055049.99205-2-marcan@marcan.st>
Date:   Thu,  9 Dec 2021 14:50:48 +0900
From:   Hector Martin <marcan@...can.st>
To:     Sven Peter <sven@...npeter.dev>,
        Jassi Brar <jassisinghbrar@...il.com>,
        Rob Herring <robh+dt@...nel.org>
Cc:     Hector Martin <marcan@...can.st>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Mark Kettenis <kettenis@...nbsd.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: [PATCH 1/2] dt-bindings: mailbox: apple,mailbox: Add generic and t6000 compatibles

Much as we've done with other blocks, let's introduce generic
compatibles so drivers can bind to those and still work with future
SoCs, as long as the hardware remains the same. Also go ahead and add
compatibles for the new t600x SoCs (we group those as t6000).

Note that no DTs instantiate devices with this binding yet.

Signed-off-by: Hector Martin <marcan@...can.st>
---
 .../devicetree/bindings/mailbox/apple,mailbox.yaml   | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/mailbox/apple,mailbox.yaml b/Documentation/devicetree/bindings/mailbox/apple,mailbox.yaml
index 2c1704b34e7a..58007c789671 100644
--- a/Documentation/devicetree/bindings/mailbox/apple,mailbox.yaml
+++ b/Documentation/devicetree/bindings/mailbox/apple,mailbox.yaml
@@ -27,14 +27,20 @@ properties:
           for example for the display controller, the system management
           controller and the NVMe coprocessor.
         items:
-          - const: apple,t8103-asc-mailbox
+          - enum:
+              - apple,t8103-asc-mailbox
+              - apple,t6000-asc-mailbox
+          - const: apple,asc-mailbox
 
       - description:
           M3 mailboxes are an older variant with a slightly different MMIO
           interface still found on the M1. It is used for the Thunderbolt
           co-processors.
         items:
-          - const: apple,t8103-m3-mailbox
+          - enum:
+              - apple,t8103-m3-mailbox
+              - apple,t6000-m3-mailbox
+          - const: apple,m3-mailbox
 
   reg:
     maxItems: 1
@@ -68,7 +74,7 @@ additionalProperties: false
 examples:
   - |
         mailbox@...08000 {
-                compatible = "apple,t8103-asc-mailbox";
+                compatible = "apple,t8103-asc-mailbox", "apple,asc-mailbox";
                 reg = <0x77408000 0x4000>;
                 interrupts = <1 583 4>, <1 584 4>, <1 585 4>, <1 586 4>;
                 interrupt-names = "send-empty", "send-not-empty",
-- 
2.33.0