ARM: dts: qcom: sdx55: Add CPUFreq support

Add CPUFreq support to SDX55 platform using the cpufreq-dt driver.
There is no dedicated hardware block available on this platform to
carry on the CPUFreq duties. Hence, it is accomplished using the CPU
clock and regulators tied together by the operating points table.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20210408170457.91409-4-manivannan.sadhasivam@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

diff --git a/arch/arm/boot/dts/qcom-sdx55.dtsi b/arch/arm/boot/dts/qcom-sdx55.dtsi
index 8112a5283ce23c91b0efa5aa47bbd9639d4846d0..20cb2c903a915e893ae9ec207c5aaedf24814040 100644 (file)
--- a/arch/arm/boot/dts/qcom-sdx55.dtsi
+++ b/arch/arm/boot/dts/qcom-sdx55.dtsi
@@ -53,6 +53,35 @@
                        compatible = "arm,cortex-a7";
                        reg = <0x0>;
                        enable-method = "psci";
+                       clocks = <&apcs>;
+                       power-domains = <&rpmhpd SDX55_CX>;
+                       power-domain-names = "rpmhpd";
+                       operating-points-v2 = <&cpu_opp_table>;
+               };
+       };
+
+       cpu_opp_table: cpu-opp-table {
+               compatible = "operating-points-v2";
+               opp-shared;
+
+               opp-345600000 {
+                       opp-hz = /bits/ 64 <345600000>;
+                       required-opps = <&rpmhpd_opp_low_svs>;
+               };
+
+               opp-576000000 {
+                       opp-hz = /bits/ 64 <576000000>;
+                       required-opps = <&rpmhpd_opp_svs>;
+               };
+
+               opp-1094400000 {
+                       opp-hz = /bits/ 64 <1094400000>;
+                       required-opps = <&rpmhpd_opp_nom>;
+               };
+
+               opp-1555200000 {
+                       opp-hz = /bits/ 64 <1555200000>;
+                       required-opps = <&rpmhpd_opp_turbo>;
                };
        };