linux-kernel - [PATCH v1 06/14] arm64: dts: mediatek: mt7988: add cci node

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Message-ID: <20250511141942.10284-7-linux@fw-web.de>
Date: Sun, 11 May 2025 16:19:22 +0200
From: Frank Wunderlich <linux@...web.de>
To: 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>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: Frank Wunderlich <frank-w@...lic-files.de>,
	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>,
	netdev@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: [PATCH v1 06/14] arm64: dts: mediatek: mt7988: add cci node

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

Add cci devicetree node for cpu frequency scaling.

Signed-off-by: Daniel Golle <daniel@...rotopia.org>
Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
---
 arch/arm64/boot/dts/mediatek/mt7988a.dtsi | 33 +++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt7988a.dtsi b/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
index ab6fc09940b8..64466acb0e71 100644
--- a/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
@@ -12,6 +12,35 @@ / {
 	#address-cells = <2>;
 	#size-cells = <2>;
 
+	cci: cci {
+		compatible = "mediatek,mt8183-cci";
+		clocks = <&mcusys CLK_MCU_BUS_DIV_SEL>,
+			 <&topckgen CLK_TOP_XTAL>;
+		clock-names = "cci", "intermediate";
+		operating-points-v2 = <&cci_opp>;
+	};
+
+	cci_opp: opp-table-cci {
+		compatible = "operating-points-v2";
+		opp-shared;
+		opp-480000000 {
+			opp-hz = /bits/ 64 <480000000>;
+			opp-microvolt = <850000>;
+		};
+		opp-660000000 {
+			opp-hz = /bits/ 64 <660000000>;
+			opp-microvolt = <850000>;
+		};
+		opp-900000000 {
+			opp-hz = /bits/ 64 <900000000>;
+			opp-microvolt = <850000>;
+		};
+		opp-1080000000 {
+			opp-hz = /bits/ 64 <1080000000>;
+			opp-microvolt = <900000>;
+		};
+	};
+
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;
@@ -25,6 +54,7 @@ cpu0: cpu@0 {
 				 <&topckgen CLK_TOP_XTAL>;
 			clock-names = "cpu", "intermediate";
 			operating-points-v2 = <&cluster0_opp>;
+			mediatek,cci = <&cci>;
 		};
 
 		cpu1: cpu@1 {
@@ -36,6 +66,7 @@ cpu1: cpu@1 {
 				 <&topckgen CLK_TOP_XTAL>;
 			clock-names = "cpu", "intermediate";
 			operating-points-v2 = <&cluster0_opp>;
+			mediatek,cci = <&cci>;
 		};
 
 		cpu2: cpu@2 {
@@ -47,6 +78,7 @@ cpu2: cpu@2 {
 				 <&topckgen CLK_TOP_XTAL>;
 			clock-names = "cpu", "intermediate";
 			operating-points-v2 = <&cluster0_opp>;
+			mediatek,cci = <&cci>;
 		};
 
 		cpu3: cpu@3 {
@@ -58,6 +90,7 @@ cpu3: cpu@3 {
 				 <&topckgen CLK_TOP_XTAL>;
 			clock-names = "cpu", "intermediate";
 			operating-points-v2 = <&cluster0_opp>;
+			mediatek,cci = <&cci>;
 		};
 
 		cluster0_opp: opp-table-0 {
-- 
2.43.0