linux-kernel - [PATCH v5 01/13] dt-bindings: net: mediatek,net: update for mt7988

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Message-ID: <20250620083555.6886-2-linux@fw-web.de>
Date: Fri, 20 Jun 2025 10:35:32 +0200
From: Frank Wunderlich <linux@...web.de>
To: MyungJoo Ham <myungjoo.ham@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Georgi Djakov <djakov@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Andrew Lunn <andrew@...n.ch>,
	Vladimir Oltean <olteanv@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: Frank Wunderlich <frank-w@...lic-files.de>,
	Jia-Wei Chang <jia-wei.chang@...iatek.com>,
	Johnson Wang <johnson.wang@...iatek.com>,
	Arınç ÜNAL <arinc.unal@...nc9.com>,
	Landen Chao <Landen.Chao@...iatek.com>,
	DENG Qingfang <dqfext@...il.com>,
	Sean Wang <sean.wang@...iatek.com>,
	Daniel Golle <daniel@...rotopia.org>,
	Lorenzo Bianconi <lorenzo@...nel.org>,
	Felix Fietkau <nbd@....name>,
	linux-pm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: [PATCH v5 01/13] dt-bindings: net: mediatek,net: update for mt7988

From: Frank Wunderlich <frank-w@...lic-files.de>

Update binding for mt7988 which has 3 gmac and 2 reg items.

MT7988 has 4 FE IRQs (currently only 2 are used) and the 4 IRQs for
use with RSS/LRO later.

Add interrupt-names to make them accessible by name.

Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
---
v5:
- fix v4 logmessage and change description a bit describing how i get
  the irq count.
- update binding for 8 irqs with different names (rx,tx => fe0..fe3)
  including the 2 reserved irqs which can be used later
- change rx-ringX to pdmaX to be closer to hardware documentation

v4:
- increase max interrupts to 6 because of adding RSS/LRO interrupts (4)
  and dropping 2 reserved irqs (0+3) around rx+tx
- dropped Robs RB due to this change
- allow interrupt names
- add interrupt-names without reserved IRQs on mt7988
  this requires mtk driver patch:
  https://patchwork.kernel.org/project/netdevbpf/patch/20250616080738.117993-2-linux@fw-web.de/

v2:
- change reg to list of items
---
 .../devicetree/bindings/net/mediatek,net.yaml | 30 ++++++++++++++++---
 1 file changed, 26 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/mediatek,net.yaml b/Documentation/devicetree/bindings/net/mediatek,net.yaml
index 9e02fd80af83..9465b40683ad 100644
--- a/Documentation/devicetree/bindings/net/mediatek,net.yaml
+++ b/Documentation/devicetree/bindings/net/mediatek,net.yaml
@@ -28,7 +28,10 @@ properties:
       - ralink,rt5350-eth
 
   reg:
-    maxItems: 1
+    items:
+      - description: Register for accessing the MACs.
+      - description: SoC internal SRAM used for DMA operations.
+    minItems: 1
 
   clocks:
     minItems: 2
@@ -40,7 +43,11 @@ properties:
 
   interrupts:
     minItems: 1
-    maxItems: 4
+    maxItems: 8
+
+  interrupt-names:
+    minItems: 1
+    maxItems: 8
 
   power-domains:
     maxItems: 1
@@ -348,7 +355,19 @@ allOf:
     then:
       properties:
         interrupts:
-          minItems: 4
+          minItems: 2
+
+        interrupt-names:
+          minItems: 2
+          items:
+            - const: fe0
+            - const: fe1
+            - const: fe2
+            - const: fe3
+            - const: pdma0
+            - const: pdma1
+            - const: pdma2
+            - const: pdma3
 
         clocks:
           minItems: 24
@@ -381,8 +400,11 @@ allOf:
             - const: xgp2
             - const: xgp3
 
+        reg:
+          minItems: 2
+
 patternProperties:
-  "^mac@[0-1]$":
+  "^mac@[0-2]$":
     type: object
     unevaluatedProperties: false
     allOf:
-- 
2.43.0