From: Samin Guo <samin.guo@starfivetech.com>
Date: Mon, 27 Feb 2023 10:26:04 +0000 (+0800)
Subject: dt-bindings: net: snps,dwmac: Add 'ahb' reset/reset-name
X-Git-Tag: accepted/tizen/unified/riscv/20230725.071352~182
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=010594a458bc93628fa314bf3d9fef5a5216d9dd;p=platform%2Fkernel%2Flinux-starfive.git

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@starfivetech.com>
Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
---

diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index e26c3e76ebb7..8fb8a0d24c08 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