From 183ad3669f28e96e820c0fdf495927955b559662 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Thu, 20 Oct 2016 13:44:07 +0900 Subject: [PATCH] arm64: dts: uniphier: add CPU clocks and OPP tables for LD20 SoC Add a CPU clock to every CPU node and CPU OPP tables to use the generic cpufreq driver. All the CPUs in each cluster share the same OPP table. Note: clock-latency-ns (300ns) was calculated based on the CPU-gear switch sequencer spec; it takes 12 clock cycles on the sequencer running at 50 MHz, plus a bit additional latency. Signed-off-by: Masahiro Yamada Acked-by: Viresh Kumar --- .../boot/dts/socionext/uniphier-ld20.dtsi | 84 +++++++++++++++++++ 1 file changed, 84 insertions(+) diff --git a/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi b/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi index eaf260823084..c6462563ad88 100644 --- a/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi +++ b/arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi @@ -79,28 +79,112 @@ device_type = "cpu"; compatible = "arm,cortex-a72", "arm,armv8"; reg = <0 0x000>; + clocks = <&sys_clk 32>; enable-method = "psci"; + operating-points-v2 = <&cluster0_opp>; }; cpu1: cpu@1 { device_type = "cpu"; compatible = "arm,cortex-a72", "arm,armv8"; reg = <0 0x001>; + clocks = <&sys_clk 32>; enable-method = "psci"; + operating-points-v2 = <&cluster0_opp>; }; cpu2: cpu@100 { device_type = "cpu"; compatible = "arm,cortex-a53", "arm,armv8"; reg = <0 0x100>; + clocks = <&sys_clk 33>; enable-method = "psci"; + operating-points-v2 = <&cluster1_opp>; }; cpu3: cpu@101 { device_type = "cpu"; compatible = "arm,cortex-a53", "arm,armv8"; reg = <0 0x101>; + clocks = <&sys_clk 33>; enable-method = "psci"; + operating-points-v2 = <&cluster1_opp>; + }; + }; + + cluster0_opp: opp_table0 { + compatible = "operating-points-v2"; + opp-shared; + + opp@250000000 { + opp-hz = /bits/ 64 <250000000>; + clock-latency-ns = <300>; + }; + opp@275000000 { + opp-hz = /bits/ 64 <275000000>; + clock-latency-ns = <300>; + }; + opp@500000000 { + opp-hz = /bits/ 64 <500000000>; + clock-latency-ns = <300>; + }; + opp@550000000 { + opp-hz = /bits/ 64 <550000000>; + clock-latency-ns = <300>; + }; + opp@666667000 { + opp-hz = /bits/ 64 <666667000>; + clock-latency-ns = <300>; + }; + opp@733334000 { + opp-hz = /bits/ 64 <733334000>; + clock-latency-ns = <300>; + }; + opp@1000000000 { + opp-hz = /bits/ 64 <1000000000>; + clock-latency-ns = <300>; + }; + opp@1100000000 { + opp-hz = /bits/ 64 <1100000000>; + clock-latency-ns = <300>; + }; + }; + + cluster1_opp: opp_table1 { + compatible = "operating-points-v2"; + opp-shared; + + opp@250000000 { + opp-hz = /bits/ 64 <250000000>; + clock-latency-ns = <300>; + }; + opp@275000000 { + opp-hz = /bits/ 64 <275000000>; + clock-latency-ns = <300>; + }; + opp@500000000 { + opp-hz = /bits/ 64 <500000000>; + clock-latency-ns = <300>; + }; + opp@550000000 { + opp-hz = /bits/ 64 <550000000>; + clock-latency-ns = <300>; + }; + opp@666667000 { + opp-hz = /bits/ 64 <666667000>; + clock-latency-ns = <300>; + }; + opp@733334000 { + opp-hz = /bits/ 64 <733334000>; + clock-latency-ns = <300>; + }; + opp@1000000000 { + opp-hz = /bits/ 64 <1000000000>; + clock-latency-ns = <300>; + }; + opp@1100000000 { + opp-hz = /bits/ 64 <1100000000>; + clock-latency-ns = <300>; }; }; -- 2.39.5