By default the CPUs on RK3588 start up in a conservative performance mode. Add frequency and voltage mappings to the device tree to enable dynamic scaling via cpufreq. OPP values are adapted from Radxa's downstream kernel for Rock 5B [1], stripping them down to the minimum frequency and voltage combinations as expected by the generic upstream cpufreq-dt driver, and also dropping those OPPs that don't differ in voltage but only in frequency (keeping the top frequency OPP in each case). Note that this patch ignores voltage scaling for the CPU memory interface which the downstream kernel does through a custom cpufreq driver, and which is why the downstream version has two sets of voltage values for each OPP (the second one being meant for the memory interface supply regulator). This is done instead via regulator coupling between CPU and memory interface supplies on affected boards. This has been tested on Rock 5B with u-boot 2023.11 compiled from Collabora's integration tree [2] with binary bl31 and appears to be stable both under active cooling and passive cooling (with throttling) [1] https://github.com/radxa/kernel/blob/stable-5.10-rock5/arch/arm64/boot/dts/rockchip/rk3588s.dtsi [2] https://gitlab.collabora.com/hardware-enablement/rockchip-3588/u-boot Signed-off-by: Alexey Charkov <alchark@xxxxxxxxx> --- arch/arm64/boot/dts/rockchip/rk3588-opp.dtsi | 149 +++++++++++++++++++++++++++ arch/arm64/boot/dts/rockchip/rk3588.dtsi | 1 + arch/arm64/boot/dts/rockchip/rk3588s.dtsi | 1 + 3 files changed, 151 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3588-opp.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-opp.dtsi new file mode 100644 index 000000000000..35bbc3c2134f --- /dev/null +++ b/arch/arm64/boot/dts/rockchip/rk3588-opp.dtsi @@ -0,0 +1,149 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) + +/ { + cluster0_opp_table: opp-table-cluster0 { + compatible = "operating-points-v2"; + opp-shared; + + opp-1008000000 { + opp-hz = /bits/ 64 <1008000000>; + opp-microvolt = <675000 675000 950000>; + clock-latency-ns = <40000>; + }; + opp-1200000000 { + opp-hz = /bits/ 64 <1200000000>; + opp-microvolt = <712500 712500 950000>; + clock-latency-ns = <40000>; + }; + opp-1416000000 { + opp-hz = /bits/ 64 <1416000000>; + opp-microvolt = <762500 762500 950000>; + clock-latency-ns = <40000>; + opp-suspend; + }; + opp-1608000000 { + opp-hz = /bits/ 64 <1608000000>; + opp-microvolt = <850000 850000 950000>; + clock-latency-ns = <40000>; + }; + opp-1800000000 { + opp-hz = /bits/ 64 <1800000000>; + opp-microvolt = <950000 950000 950000>; + clock-latency-ns = <40000>; + }; + }; + + cluster1_opp_table: opp-table-cluster1 { + compatible = "operating-points-v2"; + opp-shared; + + opp-1200000000 { + opp-hz = /bits/ 64 <1200000000>; + opp-microvolt = <675000 675000 1000000>; + clock-latency-ns = <40000>; + }; + opp-1416000000 { + opp-hz = /bits/ 64 <1416000000>; + opp-microvolt = <725000 725000 1000000>; + clock-latency-ns = <40000>; + }; + opp-1608000000 { + opp-hz = /bits/ 64 <1608000000>; + opp-microvolt = <762500 762500 1000000>; + clock-latency-ns = <40000>; + }; + opp-1800000000 { + opp-hz = /bits/ 64 <1800000000>; + opp-microvolt = <850000 850000 1000000>; + clock-latency-ns = <40000>; + }; + opp-2016000000 { + opp-hz = /bits/ 64 <2016000000>; + opp-microvolt = <925000 925000 1000000>; + clock-latency-ns = <40000>; + }; + opp-2208000000 { + opp-hz = /bits/ 64 <2208000000>; + opp-microvolt = <987500 987500 1000000>; + clock-latency-ns = <40000>; + }; + opp-2400000000 { + opp-hz = /bits/ 64 <2400000000>; + opp-microvolt = <1000000 1000000 1000000>; + clock-latency-ns = <40000>; + }; + }; + + cluster2_opp_table: opp-table-cluster2 { + compatible = "operating-points-v2"; + opp-shared; + + opp-1200000000 { + opp-hz = /bits/ 64 <1200000000>; + opp-microvolt = <675000 675000 1000000>; + clock-latency-ns = <40000>; + }; + opp-1416000000 { + opp-hz = /bits/ 64 <1416000000>; + opp-microvolt = <725000 725000 1000000>; + clock-latency-ns = <40000>; + }; + opp-1608000000 { + opp-hz = /bits/ 64 <1608000000>; + opp-microvolt = <762500 762500 1000000>; + clock-latency-ns = <40000>; + }; + opp-1800000000 { + opp-hz = /bits/ 64 <1800000000>; + opp-microvolt = <850000 850000 1000000>; + clock-latency-ns = <40000>; + }; + opp-2016000000 { + opp-hz = /bits/ 64 <2016000000>; + opp-microvolt = <925000 925000 1000000>; + clock-latency-ns = <40000>; + }; + opp-2208000000 { + opp-hz = /bits/ 64 <2208000000>; + opp-microvolt = <987500 987500 1000000>; + clock-latency-ns = <40000>; + }; + opp-2400000000 { + opp-hz = /bits/ 64 <2400000000>; + opp-microvolt = <1000000 1000000 1000000>; + clock-latency-ns = <40000>; + }; + }; +}; + +&cpu_b0 { + operating-points-v2 = <&cluster1_opp_table>; +}; + +&cpu_b1 { + operating-points-v2 = <&cluster1_opp_table>; +}; + +&cpu_b2 { + operating-points-v2 = <&cluster2_opp_table>; +}; + +&cpu_b3 { + operating-points-v2 = <&cluster2_opp_table>; +}; + +&cpu_l0 { + operating-points-v2 = <&cluster0_opp_table>; +}; + +&cpu_l1 { + operating-points-v2 = <&cluster0_opp_table>; +}; + +&cpu_l2 { + operating-points-v2 = <&cluster0_opp_table>; +}; + +&cpu_l3 { + operating-points-v2 = <&cluster0_opp_table>; +}; diff --git a/arch/arm64/boot/dts/rockchip/rk3588.dtsi b/arch/arm64/boot/dts/rockchip/rk3588.dtsi index 0bbeee399a63..7462cc1e1007 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3588.dtsi @@ -5,3 +5,4 @@ */ #include "rk3588-extra.dtsi" +#include "rk3588-opp.dtsi" diff --git a/arch/arm64/boot/dts/rockchip/rk3588s.dtsi b/arch/arm64/boot/dts/rockchip/rk3588s.dtsi index a379269147c4..c7fecf8fe7ec 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588s.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3588s.dtsi @@ -5,3 +5,4 @@ */ #include "rk3588-base.dtsi" +#include "rk3588-opp.dtsi" -- 2.45.2
