linux-kernel - [PATCH v9 07/13] arm64: dts: mediatek: mt7986: add sram node

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Message-ID: <20250709111147.11843-8-linux@fw-web.de>
Date: Wed,  9 Jul 2025 13:09:43 +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>,
	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>
Cc: Frank Wunderlich <frank-w@...lic-files.de>,
	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 v9 07/13] arm64: dts: mediatek: mt7986: add sram node

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

Currently sram is allocated in driver via offset from reg of ethernet
node. Change it to use a dedicated sram node like mt7988.

Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
---
 arch/arm64/boot/dts/mediatek/mt7986a.dtsi | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
index 559990dcd1d1..550f569451fb 100644
--- a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
@@ -523,7 +523,7 @@ wed1: wed@...11000 {
 
 		eth: ethernet@...00000 {
 			compatible = "mediatek,mt7986-eth";
-			reg = <0 0x15100000 0 0x80000>;
+			reg = <0 0x15100000 0 0x40000>;
 			interrupts = <GIC_SPI 196 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 197 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 198 IRQ_TYPE_LEVEL_HIGH>,
@@ -553,6 +553,7 @@ eth: ethernet@...00000 {
 					  <&topckgen CLK_TOP_SGM_325M_SEL>;
 			assigned-clock-parents = <&apmixedsys CLK_APMIXED_NET2PLL>,
 						 <&apmixedsys CLK_APMIXED_SGMPLL>;
+			sram = <&eth_sram>;
 			#address-cells = <1>;
 			#size-cells = <0>;
 			mediatek,ethsys = <&ethsys>;
@@ -562,6 +563,15 @@ eth: ethernet@...00000 {
 			status = "disabled";
 		};
 
+		/*15100000+0x40000*/
+		eth_sram: sram@...40000 {
+			compatible = "mmio-sram";
+			reg = <0 0x15140000 0 0x40000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <0 0x15140000 0 0x40000>;
+		};
+
 		wo_ccif0: syscon@...a5000 {
 			compatible = "mediatek,mt7986-wo-ccif", "syscon";
 			reg = <0 0x151a5000 0 0x1000>;
-- 
2.43.0