linux-kernel - [PATCH 5/5] arm64: dts: qcom: sc8280xp: Add OPP table for CCI hosts

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Message-Id: <20250904-topic-cci_updates-v1-5-d38559692703@oss.qualcomm.com>
Date: Thu, 04 Sep 2025 16:31:24 +0200
From: Konrad Dybcio <konradybcio@...nel.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Bryan O'Donoghue <bryan.odonoghue@...aro.org>, 
 Loic Poulain <loic.poulain@....qualcomm.com>, 
 Robert Foss <rfoss@...nel.org>, Andi Shyti <andi.shyti@...nel.org>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>, 
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org, 
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: [PATCH 5/5] arm64: dts: qcom: sc8280xp: Add OPP table for CCI
 hosts

From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>

The CCI hosts have both frequency and voltage requirements (which
happen to be common across instances on a given SoC, at least so far).

Express them by introducing an OPP table and linking it to the hosts.

Signed-off-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
index 18b5cb441f955f7a91204376e05536b203f3e28b..c396186317d49f411d7162771a358563329a02a4 100644
--- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
@@ -391,6 +391,15 @@ memory@...00000 {
 		reg = <0x0 0x80000000 0x0 0x0>;
 	};
 
+	cci_opp_table: opp-table-cci {
+		compatible = "operating-points-v2";
+
+		opp-37500000 {
+			opp-hz = /bits/ 64 <37500000>;
+			required-opps = <&rpmhpd_opp_low_svs>;
+		};
+	};
+
 	cpu0_opp_table: opp-table-cpu0 {
 		compatible = "operating-points-v2";
 		opp-shared;
@@ -4181,6 +4190,7 @@ cci0: cci@...a000 {
 				      "cpas_ahb",
 				      "cci";
 
+			operating-points-v2 = <&cci_opp_table>;
 			power-domains = <&camcc TITAN_TOP_GDSC>;
 
 			pinctrl-0 = <&cci0_default>;
@@ -4222,6 +4232,7 @@ cci1: cci@...b000 {
 				      "cpas_ahb",
 				      "cci";
 
+			operating-points-v2 = <&cci_opp_table>;
 			power-domains = <&camcc TITAN_TOP_GDSC>;
 
 			pinctrl-0 = <&cci1_default>;
@@ -4262,6 +4273,8 @@ cci2: cci@...c000 {
 				      "slow_ahb_src",
 				      "cpas_ahb",
 				      "cci";
+
+			operating-points-v2 = <&cci_opp_table>;
 			power-domains = <&camcc TITAN_TOP_GDSC>;
 
 			pinctrl-0 = <&cci2_default>;
@@ -4303,6 +4316,7 @@ cci3: cci@...d000 {
 				      "cpas_ahb",
 				      "cci";
 
+			operating-points-v2 = <&cci_opp_table>;
 			power-domains = <&camcc TITAN_TOP_GDSC>;
 
 			pinctrl-0 = <&cci3_default>;

-- 
2.51.0