From: Aaron Kling Date: Mon, 30 Mar 2026 21:50:20 +0000 (-0500) Subject: arm64: dts: qcom: sm8550: add cpu OPP table with DDR, LLCC & L3 bandwidths X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=3f5dcc05cd33e85e897571b4e44feb06f5399b68;p=thirdparty%2Fkernel%2Flinux.git arm64: dts: qcom: sm8550: add cpu OPP table with DDR, LLCC & L3 bandwidths Add the OPP tables for each CPU clusters (cpu0-1-2, cpu3-4-5-6 & cpu7) to permit scaling the Last Level Cache Controller (LLCC), DDR and L3 cache frequency by aggregating bandwidth requests of all CPU core with referenc to the current OPP they are configured in by the LMH/EPSS hardware. The effect is a proper caches & DDR frequency scaling when CPU cores changes frequency. The OPP tables were built using the downstream memlat ddr, llcc & l3 tables for each cluster types with the actual EPSS cpufreq LUT tables from running a QCS8550 device. Also add the OSC L3 Cache controller node. Also add the interconnect entry for each cpu, with 3 different paths: - CPU to Last Level Cache Controller (LLCC) - Last Level Cache Controller (LLCC) to DDR - L3 Cache from CPU to DDR interface Tested-by: Neil Armstrong # on SM8550-HDK Reviewed-by: Konrad Dybcio Reviewed-by: Dmitry Baryshkov Signed-off-by: Aaron Kling Link: https://lore.kernel.org/r/20260330-sm8550-ddr-bw-scaling-v4-1-5020c06983a0@gmail.com Signed-off-by: Bjorn Andersson --- diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi index 912525e9bca6f..b7a7c49db077b 100644 --- a/arch/arm64/boot/dts/qcom/sm8550.dtsi +++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -78,6 +79,13 @@ qcom,freq-domain = <&cpufreq_hw 0>; capacity-dmips-mhz = <326>; dynamic-power-coefficient = <251>; + operating-points-v2 = <&cpu0_opp_table>; + interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY + &gem_noc SLAVE_LLCC QCOM_ICC_TAG_ACTIVE_ONLY>, + <&mc_virt MASTER_LLCC QCOM_ICC_TAG_ACTIVE_ONLY + &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>, + <&epss_l3 MASTER_EPSS_L3_APPS + &epss_l3 SLAVE_EPSS_L3_SHARED>; #cooling-cells = <2>; l2_0: l2-cache { compatible = "cache"; @@ -104,6 +112,13 @@ qcom,freq-domain = <&cpufreq_hw 0>; capacity-dmips-mhz = <326>; dynamic-power-coefficient = <251>; + operating-points-v2 = <&cpu0_opp_table>; + interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY + &gem_noc SLAVE_LLCC QCOM_ICC_TAG_ACTIVE_ONLY>, + <&mc_virt MASTER_LLCC QCOM_ICC_TAG_ACTIVE_ONLY + &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>, + <&epss_l3 MASTER_EPSS_L3_APPS + &epss_l3 SLAVE_EPSS_L3_SHARED>; #cooling-cells = <2>; l2_100: l2-cache { compatible = "cache"; @@ -125,6 +140,13 @@ qcom,freq-domain = <&cpufreq_hw 0>; capacity-dmips-mhz = <326>; dynamic-power-coefficient = <251>; + operating-points-v2 = <&cpu0_opp_table>; + interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY + &gem_noc SLAVE_LLCC QCOM_ICC_TAG_ACTIVE_ONLY>, + <&mc_virt MASTER_LLCC QCOM_ICC_TAG_ACTIVE_ONLY + &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>, + <&epss_l3 MASTER_EPSS_L3_APPS + &epss_l3 SLAVE_EPSS_L3_SHARED>; #cooling-cells = <2>; l2_200: l2-cache { compatible = "cache"; @@ -146,6 +168,13 @@ qcom,freq-domain = <&cpufreq_hw 1>; capacity-dmips-mhz = <693>; dynamic-power-coefficient = <447>; + operating-points-v2 = <&cpu3_opp_table>; + interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY + &gem_noc SLAVE_LLCC QCOM_ICC_TAG_ACTIVE_ONLY>, + <&mc_virt MASTER_LLCC QCOM_ICC_TAG_ACTIVE_ONLY + &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>, + <&epss_l3 MASTER_EPSS_L3_APPS + &epss_l3 SLAVE_EPSS_L3_SHARED>; #cooling-cells = <2>; l2_300: l2-cache { compatible = "cache"; @@ -167,6 +196,13 @@ qcom,freq-domain = <&cpufreq_hw 1>; capacity-dmips-mhz = <693>; dynamic-power-coefficient = <447>; + operating-points-v2 = <&cpu3_opp_table>; + interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY + &gem_noc SLAVE_LLCC QCOM_ICC_TAG_ACTIVE_ONLY>, + <&mc_virt MASTER_LLCC QCOM_ICC_TAG_ACTIVE_ONLY + &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>, + <&epss_l3 MASTER_EPSS_L3_APPS + &epss_l3 SLAVE_EPSS_L3_SHARED>; #cooling-cells = <2>; l2_400: l2-cache { compatible = "cache"; @@ -188,6 +224,13 @@ qcom,freq-domain = <&cpufreq_hw 1>; capacity-dmips-mhz = <693>; dynamic-power-coefficient = <447>; + operating-points-v2 = <&cpu3_opp_table>; + interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY + &gem_noc SLAVE_LLCC QCOM_ICC_TAG_ACTIVE_ONLY>, + <&mc_virt MASTER_LLCC QCOM_ICC_TAG_ACTIVE_ONLY + &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>, + <&epss_l3 MASTER_EPSS_L3_APPS + &epss_l3 SLAVE_EPSS_L3_SHARED>; #cooling-cells = <2>; l2_500: l2-cache { compatible = "cache"; @@ -209,6 +252,13 @@ qcom,freq-domain = <&cpufreq_hw 1>; capacity-dmips-mhz = <693>; dynamic-power-coefficient = <447>; + operating-points-v2 = <&cpu3_opp_table>; + interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY + &gem_noc SLAVE_LLCC QCOM_ICC_TAG_ACTIVE_ONLY>, + <&mc_virt MASTER_LLCC QCOM_ICC_TAG_ACTIVE_ONLY + &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>, + <&epss_l3 MASTER_EPSS_L3_APPS + &epss_l3 SLAVE_EPSS_L3_SHARED>; #cooling-cells = <2>; l2_600: l2-cache { compatible = "cache"; @@ -230,6 +280,13 @@ qcom,freq-domain = <&cpufreq_hw 2>; capacity-dmips-mhz = <1024>; dynamic-power-coefficient = <1057>; + operating-points-v2 = <&cpu7_opp_table>; + interconnects = <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY + &gem_noc SLAVE_LLCC QCOM_ICC_TAG_ACTIVE_ONLY>, + <&mc_virt MASTER_LLCC QCOM_ICC_TAG_ACTIVE_ONLY + &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ACTIVE_ONLY>, + <&epss_l3 MASTER_EPSS_L3_APPS + &epss_l3 SLAVE_EPSS_L3_SHARED>; #cooling-cells = <2>; l2_700: l2-cache { compatible = "cache"; @@ -397,6 +454,306 @@ reg = <0 0xa0000000 0 0>; }; + cpu0_opp_table: opp-table-cpu0 { + compatible = "operating-points-v2"; + opp-shared; + + opp-307200000 { + opp-hz = /bits/ 64 <307200000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (307200 * 32)>; + }; + + opp-441600000 { + opp-hz = /bits/ 64 <441600000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (384000 * 32)>; + }; + + opp-556800000 { + opp-hz = /bits/ 64 <556800000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (499200 * 32)>; + }; + + opp-672000000 { + opp-hz = /bits/ 64 <672000000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (499200 * 32)>; + }; + + opp-787200000 { + opp-hz = /bits/ 64 <787200000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (729600 * 32)>; + }; + + opp-902400000 { + opp-hz = /bits/ 64 <902400000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (844800 * 32)>; + }; + + opp-1017600000 { + opp-hz = /bits/ 64 <1017600000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (940800 * 32)>; + }; + + opp-1113600000 { + opp-hz = /bits/ 64 <1113600000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (1056000 * 32)>; + }; + + opp-1228800000 { + opp-hz = /bits/ 64 <1228800000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (1152000 * 32)>; + }; + + opp-1344000000 { + opp-hz = /bits/ 64 <1344000000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (1267200 * 32)>; + }; + + opp-1459200000 { + opp-hz = /bits/ 64 <1459200000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (1267200 * 32)>; + }; + + opp-1555200000 { + opp-hz = /bits/ 64 <1555200000>; + opp-peak-kBps = <(466000 * 16) (768000 * 4) (1478400 * 32)>; + }; + + opp-1670400000 { + opp-hz = /bits/ 64 <1670400000>; + opp-peak-kBps = <(466000 * 16) (768000 * 4) (1478400 * 32)>; + }; + + opp-1785600000 { + opp-hz = /bits/ 64 <1785600000>; + opp-peak-kBps = <(466000 * 16) (768000 * 4) (1478400 * 32)>; + }; + + opp-1900800000 { + opp-hz = /bits/ 64 <1900800000>; + opp-peak-kBps = <(466000 * 16) (768000 * 4) (1689600 * 32)>; + }; + + opp-2016000000 { + opp-hz = /bits/ 64 <2016000000>; + opp-peak-kBps = <(600000 * 16) (1555000 * 4) (1804800 * 32)>; + }; + }; + + cpu3_opp_table: opp-table-cpu3 { + compatible = "operating-points-v2"; + opp-shared; + + opp-499200000 { + opp-hz = /bits/ 64 <499200000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (307200 * 32)>; + }; + + opp-614400000 { + opp-hz = /bits/ 64 <614400000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (499200 * 32)>; + }; + + opp-729600000 { + opp-hz = /bits/ 64 <729600000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (499200 * 32)>; + }; + + opp-844800000 { + opp-hz = /bits/ 64 <844800000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (499200 * 32)>; + }; + + opp-940800000 { + opp-hz = /bits/ 64 <940800000>; + opp-peak-kBps = <(300000 * 16) (768000 * 4) (729600 * 32)>; + }; + + opp-1056000000 { + opp-hz = /bits/ 64 <1056000000>; + opp-peak-kBps = <(300000 * 16) (768000 * 4) (729600 * 32)>; + }; + + opp-1171200000 { + opp-hz = /bits/ 64 <1171200000>; + opp-peak-kBps = <(466000 * 16) (1555000 * 4) (940800 * 32)>; + }; + + opp-1286400000 { + opp-hz = /bits/ 64 <1286400000>; + opp-peak-kBps = <(466000 * 16) (1555000 * 4) (940800 * 32)>; + }; + + opp-1401600000 { + opp-hz = /bits/ 64 <1401600000>; + opp-peak-kBps = <(600000 * 16) (1708000 * 4) (1056000 * 32)>; + }; + + opp-1536000000 { + opp-hz = /bits/ 64 <1536000000>; + opp-peak-kBps = <(600000 * 16) (1708000 * 4) (1056000 * 32)>; + }; + + opp-1651200000 { + opp-hz = /bits/ 64 <1651200000>; + opp-peak-kBps = <(600000 * 16) (1708000 * 4) (1267200 * 32)>; + }; + + opp-1785600000 { + opp-hz = /bits/ 64 <1785600000>; + opp-peak-kBps = <(600000 * 16) (1708000 * 4) (1267200 * 32)>; + }; + + opp-1920000000 { + opp-hz = /bits/ 64 <1920000000>; + opp-peak-kBps = <(806000 * 16) (2736000 * 4) (1267200 * 32)>; + }; + + opp-2054400000 { + opp-hz = /bits/ 64 <2054400000>; + opp-peak-kBps = <(806000 * 16) (2736000 * 4) (1478400 * 32)>; + }; + + opp-2188800000 { + opp-hz = /bits/ 64 <2188800000>; + opp-peak-kBps = <(806000 * 16) (2736000 * 4) (1478400 * 32)>; + }; + + opp-2323200000 { + opp-hz = /bits/ 64 <2323200000>; + opp-peak-kBps = <(806000 * 16) (2736000 * 4) (1478400 * 32)>; + }; + + opp-2457600000 { + opp-hz = /bits/ 64 <2457600000>; + opp-peak-kBps = <(806000 * 16) (2736000 * 4) (1478400 * 32)>; + }; + + opp-2592000000 { + opp-hz = /bits/ 64 <2592000000>; + opp-peak-kBps = <(806000 * 16) (2736000 * 4) (1478400 * 32)>; + }; + + opp-2707200000 { + opp-hz = /bits/ 64 <2707200000>; + opp-peak-kBps = <(933000 * 16) (2736000 * 4) (1478400 * 32)>; + }; + + opp-2803200000 { + opp-hz = /bits/ 64 <2803200000>; + opp-peak-kBps = <(933000 * 16) (3686000 * 4) (1689600 * 32)>; + }; + }; + + cpu7_opp_table: opp-table-cpu7 { + compatible = "operating-points-v2"; + opp-shared; + + opp-595200000 { + opp-hz = /bits/ 64 <595200000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (307200 * 32)>; + }; + + opp-729600000 { + opp-hz = /bits/ 64 <729600000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (499200 * 32)>; + }; + + opp-864000000 { + opp-hz = /bits/ 64 <864000000>; + opp-peak-kBps = <(300000 * 16) (547000 * 4) (499200 * 32)>; + }; + + opp-998400000 { + opp-hz = /bits/ 64 <998400000>; + opp-peak-kBps = <(300000 * 16) (768000 * 4) (729600 * 32)>; + }; + + opp-1132800000 { + opp-hz = /bits/ 64 <1132800000>; + opp-peak-kBps = <(300000 * 16) (768000 * 4) (729600 * 32)>; + }; + + opp-1248000000 { + opp-hz = /bits/ 64 <1248000000>; + opp-peak-kBps = <(466000 * 16) (1555000 * 4) (940800 * 32)>; + }; + + opp-1363200000 { + opp-hz = /bits/ 64 <1363200000>; + opp-peak-kBps = <(466000 * 16) (1555000 * 4) (940800 * 32)>; + }; + + opp-1478400000 { + opp-hz = /bits/ 64 <1478400000>; + opp-peak-kBps = <(600000 * 16) (1708000 * 4) (1056000 * 32)>; + }; + + opp-1593600000 { + opp-hz = /bits/ 64 <1593600000>; + opp-peak-kBps = <(600000 * 16) (1708000 * 4) (1056000 * 32)>; + }; + + opp-1708800000 { + opp-hz = /bits/ 64 <1708800000>; + opp-peak-kBps = <(600000 * 16) (1708000 * 4) (1267200 * 32)>; + }; + + opp-1843200000 { + opp-hz = /bits/ 64 <1843200000>; + opp-peak-kBps = <(600000 * 16) (1708000 * 4) (1267200 * 32)>; + }; + + opp-1977600000 { + opp-hz = /bits/ 64 <1977600000>; + opp-peak-kBps = <(806000 * 16) (2736000 * 4) (1267200 * 32)>; + }; + + opp-2092800000 { + opp-hz = /bits/ 64 <2092800000>; + opp-peak-kBps = <(806000 * 16) (2736000 * 4) (1478400 * 32)>; + }; + + opp-2227200000 { + opp-hz = /bits/ 64 <2227200000>; + opp-peak-kBps = <(806000 * 16) (2736000 * 4) (1478400 * 32)>; + }; + + opp-2342400000 { + opp-hz = /bits/ 64 <2342400000>; + opp-peak-kBps = <(806000 * 16) (2736000 * 4) (1478400 * 32)>; + }; + + opp-2476800000 { + opp-hz = /bits/ 64 <2476800000>; + opp-peak-kBps = <(806000 * 16) (2736000 * 4) (1478400 * 32)>; + }; + + opp-2592000000 { + opp-hz = /bits/ 64 <2592000000>; + opp-peak-kBps = <(806000 * 16) (2736000 * 4) (1478400 * 32)>; + }; + + opp-2726400000 { + opp-hz = /bits/ 64 <2726400000>; + opp-peak-kBps = <(933000 * 16) (3686000 * 4) (1478400 * 32)>; + }; + + opp-2841600000 { + opp-hz = /bits/ 64 <2841600000>; + opp-peak-kBps = <(933000 * 16) (3686000 * 4) (1689600 * 32)>; + }; + + opp-2956800000 { + opp-hz = /bits/ 64 <2956800000>; + opp-peak-kBps = <(933000 * 16) (3686000 * 4) (1689600 * 32)>; + }; + + opp-3187200000 { + opp-hz = /bits/ 64 <3187200000>; + opp-peak-kBps = <(933000 * 16) (3686000 * 4) (1689600 * 32)>; + }; + }; + pmu-a510 { compatible = "arm,cortex-a510-pmu"; interrupts = ; @@ -5482,6 +5839,16 @@ }; }; + epss_l3: interconnect@17d90000 { + compatible = "qcom,sm8550-epss-l3", "qcom,epss-l3"; + reg = <0 0x17d90000 0 0x1000>; + + clocks = <&bi_tcxo_div2>, <&gcc GCC_GPLL0>; + clock-names = "xo", "alternate"; + + #interconnect-cells = <1>; + }; + cpufreq_hw: cpufreq@17d91000 { compatible = "qcom,sm8550-cpufreq-epss", "qcom,cpufreq-epss"; reg = <0 0x17d91000 0 0x1000>,