[PATCH 4/4] arm64: dts: qcom: msm8916: Add CPU frequency scaling support
From: Amit Kucheria <hidden>
Date: 2018-02-07 12:57:26
Also in:
linux-arm-msm, lkml
On Mon, Feb 5, 2018 at 8:16 PM, Georgi Djakov [off-list ref] wrote:
Add a CPU OPP table to allow CPU frequency scaling on msm8916 platforms. Signed-off-by: Georgi Djakov <redacted>
For this series, please feel free to add my Reviewed-by: Amit Kucheria <redacted> Tested-by: Amit Kucheria <redacted> It enables basic cpufreq on the DB410c in mainline after enabling QCOM_APCS_IPC. I'll send out another patch to automatically select this Kconfig option.
quoted hunk ↗ jump to hunk
--- arch/arm64/boot/dts/qcom/msm8916.dtsi | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+)diff --git a/arch/arm64/boot/dts/qcom/msm8916.dtsi b/arch/arm64/boot/dts/qcom/msm8916.dtsi index 4539571a36b2..e4682779eec7 100644 --- a/arch/arm64/boot/dts/qcom/msm8916.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8916.dtsi@@ -113,6 +113,8 @@ next-level-cache = <&L2_0>; enable-method = "psci"; cpu-idle-states = <&CPU_SPC>; + clocks = <&apcs 0>; + operating-points-v2 = <&cpu_opp_table>; }; CPU1: cpu at 1 {@@ -122,6 +124,8 @@ next-level-cache = <&L2_0>; enable-method = "psci"; cpu-idle-states = <&CPU_SPC>; + clocks = <&apcs 0>; + operating-points-v2 = <&cpu_opp_table>; }; CPU2: cpu at 2 {@@ -131,6 +135,8 @@ next-level-cache = <&L2_0>; enable-method = "psci"; cpu-idle-states = <&CPU_SPC>; + clocks = <&apcs 0>; + operating-points-v2 = <&cpu_opp_table>; }; CPU3: cpu at 3 {@@ -140,6 +146,8 @@ next-level-cache = <&L2_0>; enable-method = "psci"; cpu-idle-states = <&CPU_SPC>; + clocks = <&apcs 0>; + operating-points-v2 = <&cpu_opp_table>; }; L2_0: l2-cache {@@ -212,6 +220,24 @@ }; + cpu_opp_table: cpu_opp_table { + compatible = "operating-points-v2"; + opp-shared; + + opp-200000000 { + opp-hz = /bits/ 64 <200000000>; + }; + opp-400000000 { + opp-hz = /bits/ 64 <400000000>; + }; + opp-800000000 { + opp-hz = /bits/ 64 <800000000>; + }; + opp-998400000 { + opp-hz = /bits/ 64 <998400000>; + }; + }; + gpu_opp_table: opp_table { compatible = "operating-points-v2";