linux-kernel - [PATCH v2 1/3] dt-bindings: serial: amlogic,meson-uart: Add compatible string for G12A

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Date:   Mon,  6 Mar 2023 20:42:21 +0100
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     linux-amlogic@...ts.infradead.org, devicetree@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        jirislaby@...nel.org, neil.armstrong@...aro.org,
        krzysztof.kozlowski+dt@...aro.org, robh+dt@...nel.org,
        gregkh@...uxfoundation.org,
        Christian Hewitt <christianshewitt@...il.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: [PATCH v2 1/3] dt-bindings: serial: amlogic,meson-uart: Add compatible string for G12A

Amlogic G12A SoCs gained a new "divide XTAL by 2" bit. Everything else
(we know about) is identical to the UART IP on GX (GXBB/GXL/GXM) SoCs.
Add a new compatible string for this SoC so this new bit can be managed
accordingly while keeping "amlogic,meson-gx-uart" as fallback compatible
string.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
---
Changes from v1 -> v2:
- make meson-gx-uart a valid compatible string for meson-g12a-uart


 .../bindings/serial/amlogic,meson-uart.yaml   | 28 +++++++++++++------
 1 file changed, 19 insertions(+), 9 deletions(-)

diff --git a/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml b/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
index 3cbdde85ed71..f3af0da8edaf 100644
--- a/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
@@ -26,21 +26,31 @@ properties:
   compatible:
     oneOf:
       - description: Always-on power domain UART controller
-        items:
+        oneOf:
+          - items:
+              - enum:
+                  - amlogic,meson6-uart
+                  - amlogic,meson8-uart
+                  - amlogic,meson8b-uart
+                  - amlogic,meson-gx-uart
+                  - amlogic,meson-s4-uart
+              - const: amlogic,meson-ao-uart
+          - items:
+              - const: amlogic,meson-g12a-uart
+              - const: amlogic,meson-gx-uart
+              - const: amlogic,meson-ao-uart
+      - description: Everything-Else power domain UART controller
+        oneOf:
           - enum:
               - amlogic,meson6-uart
               - amlogic,meson8-uart
               - amlogic,meson8b-uart
               - amlogic,meson-gx-uart
+              - amlogic,meson-g12a-uart
               - amlogic,meson-s4-uart
-          - const: amlogic,meson-ao-uart
-      - description: Everything-Else power domain UART controller
-        enum:
-          - amlogic,meson6-uart
-          - amlogic,meson8-uart
-          - amlogic,meson8b-uart
-          - amlogic,meson-gx-uart
-          - amlogic,meson-s4-uart
+          - items:
+              - const: amlogic,meson-g12a-uart
+              - const: amlogic,meson-gx-uart
 
   reg:
     maxItems: 1
-- 
2.39.2