From: Dave Gerlach Date: Tue, 1 Nov 2022 18:09:33 +0000 (-0500) Subject: arm64: dts: ti: k3-am625: Introduce operating-points table X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=6d4ee83b423fe663a8574d2f16b48b98cbfc9b26;p=linux.git arm64: dts: ti: k3-am625: Introduce operating-points table Introduce an operating-points table for the A53 cores, containing only frequency values as this platform operates on a fixed voltage for the CPUs. Also provide opp-supported-hw values to ensure appropriate OPPs are enabled based on which type of silicon is in use. The latency between pre and post frequency transition was measured in CPUFreq driver for all combinations of OPP changes. The average value was selected as overall clock-latency-ns. Signed-off-by: Dave Gerlach Signed-off-by: Vibhore Vardhan Signed-off-by: Viresh Kumar --- diff --git a/arch/arm64/boot/dts/ti/k3-am625.dtsi b/arch/arm64/boot/dts/ti/k3-am625.dtsi index 887f31c23fef6..cea2cc7de5dd3 100644 --- a/arch/arm64/boot/dts/ti/k3-am625.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am625.dtsi @@ -48,6 +48,8 @@ d-cache-line-size = <64>; d-cache-sets = <128>; next-level-cache = <&L2_0>; + operating-points-v2 = <&a53_opp_table>; + clocks = <&k3_clks 135 0>; }; cpu1: cpu@1 { @@ -62,6 +64,8 @@ d-cache-line-size = <64>; d-cache-sets = <128>; next-level-cache = <&L2_0>; + operating-points-v2 = <&a53_opp_table>; + clocks = <&k3_clks 136 0>; }; cpu2: cpu@2 { @@ -76,6 +80,8 @@ d-cache-line-size = <64>; d-cache-sets = <128>; next-level-cache = <&L2_0>; + operating-points-v2 = <&a53_opp_table>; + clocks = <&k3_clks 137 0>; }; cpu3: cpu@3 { @@ -90,6 +96,51 @@ d-cache-line-size = <64>; d-cache-sets = <128>; next-level-cache = <&L2_0>; + operating-points-v2 = <&a53_opp_table>; + clocks = <&k3_clks 138 0>; + }; + }; + + a53_opp_table: opp-table { + compatible = "operating-points-v2-ti-cpu"; + opp-shared; + syscon = <&wkup_conf>; + + opp-200000000 { + opp-hz = /bits/ 64 <200000000>; + opp-supported-hw = <0x01 0x0007>; + clock-latency-ns = <6000000>; + }; + + opp-400000000 { + opp-hz = /bits/ 64 <400000000>; + opp-supported-hw = <0x01 0x0007>; + clock-latency-ns = <6000000>; + }; + + opp-600000000 { + opp-hz = /bits/ 64 <600000000>; + opp-supported-hw = <0x01 0x0007>; + clock-latency-ns = <6000000>; + }; + + opp-800000000 { + opp-hz = /bits/ 64 <800000000>; + opp-supported-hw = <0x01 0x0007>; + clock-latency-ns = <6000000>; + }; + + opp-1000000000 { + opp-hz = /bits/ 64 <1000000000>; + opp-supported-hw = <0x01 0x0006>; + clock-latency-ns = <6000000>; + }; + + opp-1250000000 { + opp-hz = /bits/ 64 <1250000000>; + opp-supported-hw = <0x01 0x0004>; + clock-latency-ns = <6000000>; + opp-suspend; }; };