linux-kernel - [PATCH v2 1/2] arm64: dts: qcom: sc7180-lite: Tweak DDR/L3 scaling on SC7180-lite

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Date:   Tue, 24 Nov 2020 11:51:15 +0530
From:   Sibi Sankar <sibis@...eaurora.org>
To:     bjorn.andersson@...aro.org, dianders@...omium.org
Cc:     agross@...nel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        evgreen@...omium.org, robh+dt@...nel.org, swboyd@...omium.org,
        mka@...omium.org, Sibi Sankar <sibis@...eaurora.org>
Subject: [PATCH v2 1/2] arm64: dts: qcom: sc7180-lite: Tweak DDR/L3 scaling on SC7180-lite

Tweak the DDR/L3 bandwidth votes on the lite variant of the SC7180 SoC
since the gold cores only support frequencies upto 2.1 GHz.

Signed-off-by: Sibi Sankar <sibis@...eaurora.org>
---

V2:
 * Updated the lite ddr/l3 cpufreq map to have better power numbers with
   similar perf.

 arch/arm64/boot/dts/qcom/sc7180-lite.dtsi | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/sc7180-lite.dtsi

diff --git a/arch/arm64/boot/dts/qcom/sc7180-lite.dtsi b/arch/arm64/boot/dts/qcom/sc7180-lite.dtsi
new file mode 100644
index 000000000000..d8ed1d7b4ec7
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/sc7180-lite.dtsi
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * SC7180 lite device tree source
+ *
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ */
+
+&cpu6_opp10 {
+	opp-peak-kBps = <7216000 22425600>;
+};
+
+&cpu6_opp11 {
+	opp-peak-kBps = <7216000 22425600>;
+};
+
+&cpu6_opp12 {
+	opp-peak-kBps = <8532000 23347200>;
+};
-- 
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