Support dynamic voltage and frequency scaling on qcs404.
CPUFreq will soon be superseded by Core Power Reduction (CPR, a form
of Adaptive Voltage Scaling found on some Qualcomm SoCs like the
qcs404).
Due to the CPR upstreaming already being in progress - and some
commits already merged - the following commit will need to be
reverted to enable CPUFreq support
Author: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@xxxxxxxxxx>
Date: Thu Jul 25 12:41:36 2019 +0200
cpufreq: Add qcs404 to cpufreq-dt-platdev blacklist
Co-developed-by: Niklas Cassel <niklas.cassel@xxxxxxxxxx>
Signed-off-by: Niklas Cassel <niklas.cassel@xxxxxxxxxx>
Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@xxxxxxxxxx>
Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/qcs404.dtsi | 31 ++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/qcs404.dtsi b/arch/arm64/boot/dts/qcom/qcs404.dtsi
index 34360b2d3e0d..e425e54e1af9 100644
--- a/arch/arm64/boot/dts/qcom/qcs404.dtsi
+++ b/arch/arm64/boot/dts/qcom/qcs404.dtsi
@@ -36,6 +36,10 @@
cpu-idle-states = <&CPU_SLEEP_0>;
next-level-cache = <&L2_0>;
#cooling-cells = <2>;
+ clocks = <&apcs_glb>;
+ operating-points-v2 = <&cpu_opp_table>;
+ cpu-supply = <&pms405_s3>;
+
};
CPU1: cpu@101 {
@@ -46,6 +50,9 @@
cpu-idle-states = <&CPU_SLEEP_0>;
next-level-cache = <&L2_0>;
#cooling-cells = <2>;
+ clocks = <&apcs_glb>;
+ operating-points-v2 = <&cpu_opp_table>;
+ cpu-supply = <&pms405_s3>;
};
CPU2: cpu@102 {
@@ -56,6 +63,9 @@
cpu-idle-states = <&CPU_SLEEP_0>;
next-level-cache = <&L2_0>;
#cooling-cells = <2>;
+ clocks = <&apcs_glb>;
+ operating-points-v2 = <&cpu_opp_table>;
+ cpu-supply = <&pms405_s3>;
};
CPU3: cpu@103 {
@@ -66,6 +76,9 @@
cpu-idle-states = <&CPU_SLEEP_0>;
next-level-cache = <&L2_0>;
#cooling-cells = <2>;
+ clocks = <&apcs_glb>;
+ operating-points-v2 = <&cpu_opp_table>;
+ cpu-supply = <&pms405_s3>;
};
L2_0: l2-cache {
@@ -88,6 +101,24 @@
};
};
+ cpu_opp_table: cpu-opp-table {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp-1094400000 {
+ opp-hz = /bits/ 64 <1094400000>;
+ opp-microvolt = <1224000 1224000 1224000>;
+ };
+ opp-1248000000 {
+ opp-hz = /bits/ 64 <1248000000>;
+ opp-microvolt = <1288000 1288000 1288000>;
+ };
+ opp-1401600000 {
+ opp-hz = /bits/ 64 <1401600000>;
+ opp-microvolt = <1384000 1384000 1384000>;
+ };
+ };
+
firmware {
scm: scm {
compatible = "qcom,scm-qcs404", "qcom,scm";
--
2.22.0
