netdev - [RFC PATCH net-next 1/8] dt-bindings: net: Add support for AM65x SR1.0 in ICSSG

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Date: Tue, 19 Dec 2023 17:45:39 +0000
From: Diogo Ivo <diogo.ivo@...mens.com>
To: danishanwar@...com,
	rogerq@...nel.org,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org,
	linux-arm-kernel@...ts.infradead.org,
	netdev@...r.kernel.org,
	devicetree@...r.kernel.org
Cc: Diogo Ivo <diogo.ivo@...mens.com>,
	Jan Kiszka <jan.kiszka@...mens.com>
Subject: [RFC PATCH net-next 1/8] dt-bindings: net: Add support for AM65x SR1.0 in ICSSG

Silicon Revision 1.0 of the AM65x came with a slightly different ICSSG
support: Only 2 PRUs per slice are available and instead 2 additional
DMA channels are used for management purposes. We have no restrictions
on specified PRUs, but the DMA channels need to be adjusted.

Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com>
Signed-off-by: Diogo Ivo <diogo.ivo@...mens.com>
---
 .../bindings/net/ti,icssg-prueth.yaml         | 62 +++++++++++++------
 1 file changed, 44 insertions(+), 18 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml b/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml
index 229c8f32019f..fbe51731854a 100644
--- a/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml
+++ b/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml
@@ -19,30 +19,15 @@ allOf:
 properties:
   compatible:
     enum:
-      - ti,am642-icssg-prueth  # for AM64x SoC family
-      - ti,am654-icssg-prueth  # for AM65x SoC family
+      - ti,am642-icssg-prueth      # for AM64x SoC family
+      - ti,am654-icssg-prueth      # for AM65x SoC family, SR2.x
+      - ti,am654-icssg-prueth-sr1  # for AM65x SoC family, SR1.0
 
   sram:
     $ref: /schemas/types.yaml#/definitions/phandle
     description:
       phandle to MSMC SRAM node
 
-  dmas:
-    maxItems: 10
-
-  dma-names:
-    items:
-      - const: tx0-0
-      - const: tx0-1
-      - const: tx0-2
-      - const: tx0-3
-      - const: tx1-0
-      - const: tx1-1
-      - const: tx1-2
-      - const: tx1-3
-      - const: rx0
-      - const: rx1
-
   ti,mii-g-rt:
     $ref: /schemas/types.yaml#/definitions/phandle
     description:
@@ -122,6 +107,47 @@ properties:
       - required:
           - port@1
 
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - ti,am654-icssg-prueth-sr1
+then:
+  properties:
+    dmas:
+      maxItems: 12
+    dma-names:
+      items:
+        - const: tx0-0
+        - const: tx0-1
+        - const: tx0-2
+        - const: tx0-3
+        - const: tx1-0
+        - const: tx1-1
+        - const: tx1-2
+        - const: tx1-3
+        - const: rx0
+        - const: rx1
+        - const: rxmgm0
+        - const: rxmgm1
+else:
+  properties:
+    dmas:
+      maxItems: 10
+    dma-names:
+      items:
+        - const: tx0-0
+        - const: tx0-1
+        - const: tx0-2
+        - const: tx0-3
+        - const: tx1-0
+        - const: tx1-1
+        - const: tx1-2
+        - const: tx1-3
+        - const: rx0
+        - const: rx1
+
 required:
   - compatible
   - sram
-- 
2.43.0