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Message-ID: <20230316043714.24279-4-samin.guo@starfivetech.com>
Date:   Thu, 16 Mar 2023 12:37:11 +0800
From:   Samin Guo <samin.guo@...rfivetech.com>
To:     <linux-riscv@...ts.infradead.org>, <netdev@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        Richard Cochran <richardcochran@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Peter Geis <pgwipeout@...il.com>,
        Yanhong Wang <yanhong.wang@...rfivetech.com>,
        Samin Guo <samin.guo@...rfivetech.com>,
        Tommaso Merciai <tomm.merciai@...il.com>
Subject: [PATCH v7 3/6] dt-bindings: net: snps,dwmac: Add 'ahb' reset/reset-name

According to:
stmmac_platform.c: stmmac_probe_config_dt
stmmac_main.c: stmmac_dvr_probe

dwmac controller may require one (stmmaceth) or two (stmmaceth+ahb)
reset signals, and the maxItems of resets/reset-names is going to be 2.

The gmac of Starfive Jh7110 SOC must have two resets.
it uses snps,dwmac-5.20 IP.

Signed-off-by: Samin Guo <samin.guo@...rfivetech.com>
Tested-by: Tommaso Merciai <tomm.merciai@...il.com>
---
 .../devicetree/bindings/net/snps,dwmac.yaml          | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index 01b056ab71f7..e4519cf722ab 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -133,12 +133,16 @@ properties:
         - ptp_ref
 
   resets:
-    maxItems: 1
-    description:
-      MAC Reset signal.
+    minItems: 1
+    items:
+      - description: GMAC stmmaceth reset
+      - description: AHB reset
 
   reset-names:
-    const: stmmaceth
+    minItems: 1
+    items:
+      - const: stmmaceth
+      - const: ahb
 
   power-domains:
     maxItems: 1
-- 
2.17.1

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