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Message-Id: <20250820-opp_pcie-v4-5-273b8944eed0@oss.qualcomm.com>
Date: Wed, 20 Aug 2025 13:58:51 +0530
From: Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
To: Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
Stephen Boyd <sboyd@...nel.org>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Manivannan Sadhasivam <mani@...nel.org>,
Lorenzo Pieralisi <lpieralisi@...nel.org>,
Krzysztof Wilczyński <kwilczynski@...nel.org>,
Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konradybcio@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-pci@...r.kernel.org, linux-arm-msm@...r.kernel.org,
devicetree@...r.kernel.org,
Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
Subject: [PATCH v4 5/7] arm64: dts: qcom: sm8650: Add opp-level to indicate
PCIe data rates
Add opp-level to indicate PCIe data rates and also define OPP enteries
for each link width and data rate. Append the opp level to name of the
opp node to indicate both frequency and level.
Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
---
arch/arm64/boot/dts/qcom/sm8650.dtsi | 63 ++++++++++++++++++++++++++++--------
1 file changed, 49 insertions(+), 14 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/sm8650.dtsi b/arch/arm64/boot/dts/qcom/sm8650.dtsi
index e14d3d778b71bbbd0c8fcc851eebc9df9ac09c31..fc05f5eee870ca67cbafab5d989e5f861d96add7 100644
--- a/arch/arm64/boot/dts/qcom/sm8650.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8650.dtsi
@@ -3660,38 +3660,51 @@ pcie0_opp_table: opp-table {
compatible = "operating-points-v2";
/* GEN 1 x1 */
- opp-2500000 {
+ opp-2500000-1 {
opp-hz = /bits/ 64 <2500000>;
required-opps = <&rpmhpd_opp_low_svs>;
opp-peak-kBps = <250000 1>;
+ opp-level = <1>;
};
- /* GEN 1 x2 and GEN 2 x1 */
- opp-5000000 {
+ /* GEN 1 x2 */
+ opp-5000000-1 {
opp-hz = /bits/ 64 <5000000>;
required-opps = <&rpmhpd_opp_low_svs>;
opp-peak-kBps = <500000 1>;
+ opp-level = <1>;
+ };
+
+ /* GEN 2 x1 */
+ opp-5000000-2 {
+ opp-hz = /bits/ 64 <5000000>;
+ required-opps = <&rpmhpd_opp_low_svs>;
+ opp-peak-kBps = <500000 1>;
+ opp-level = <2>;
};
/* GEN 2 x2 */
- opp-10000000 {
+ opp-10000000-2 {
opp-hz = /bits/ 64 <10000000>;
required-opps = <&rpmhpd_opp_low_svs>;
opp-peak-kBps = <1000000 1>;
+ opp-level = <2>;
};
/* GEN 3 x1 */
- opp-8000000 {
+ opp-8000000-3 {
opp-hz = /bits/ 64 <8000000>;
required-opps = <&rpmhpd_opp_nom>;
opp-peak-kBps = <984500 1>;
+ opp-level = <3>;
};
/* GEN 3 x2 */
- opp-16000000 {
+ opp-16000000-3 {
opp-hz = /bits/ 64 <16000000>;
required-opps = <&rpmhpd_opp_nom>;
opp-peak-kBps = <1969000 1>;
+ opp-level = <3>;
};
};
@@ -3840,45 +3853,67 @@ pcie1_opp_table: opp-table {
compatible = "operating-points-v2";
/* GEN 1 x1 */
- opp-2500000 {
+ opp-2500000-1 {
opp-hz = /bits/ 64 <2500000>;
required-opps = <&rpmhpd_opp_low_svs>;
opp-peak-kBps = <250000 1>;
+ opp-level = <1>;
+ };
+
+ /* GEN 1 x2 */
+ opp-5000000-1 {
+ opp-hz = /bits/ 64 <5000000>;
+ required-opps = <&rpmhpd_opp_low_svs>;
+ opp-peak-kBps = <500000 1>;
+ opp-level = <1>;
};
- /* GEN 1 x2 and GEN 2 x1 */
- opp-5000000 {
+ /* GEN 2 x1 */
+ opp-5000000-2 {
opp-hz = /bits/ 64 <5000000>;
required-opps = <&rpmhpd_opp_low_svs>;
opp-peak-kBps = <500000 1>;
+ opp-level = <2>;
};
/* GEN 2 x2 */
- opp-10000000 {
+ opp-10000000-2 {
opp-hz = /bits/ 64 <10000000>;
required-opps = <&rpmhpd_opp_low_svs>;
opp-peak-kBps = <1000000 1>;
+ opp-level = <2>;
};
/* GEN 3 x1 */
- opp-8000000 {
+ opp-8000000-3 {
opp-hz = /bits/ 64 <8000000>;
required-opps = <&rpmhpd_opp_nom>;
opp-peak-kBps = <984500 1>;
+ opp-level = <3>;
+ };
+
+ /* GEN 3 x2 */
+ opp-16000000-3 {
+ opp-hz = /bits/ 64 <16000000>;
+ required-opps = <&rpmhpd_opp_nom>;
+ opp-peak-kBps = <1969000 1>;
+ opp-level = <3>;
};
- /* GEN 3 x2 and GEN 4 x1 */
- opp-16000000 {
+ /* GEN 4 x1 */
+ opp-16000000-4 {
opp-hz = /bits/ 64 <16000000>;
required-opps = <&rpmhpd_opp_nom>;
opp-peak-kBps = <1969000 1>;
+ opp-level = <4>;
};
/* GEN 4 x2 */
- opp-32000000 {
+ opp-32000000-4 {
opp-hz = /bits/ 64 <32000000>;
required-opps = <&rpmhpd_opp_nom>;
opp-peak-kBps = <3938000 1>;
+ opp-level = <4>;
};
};
--
2.34.1
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