From ef10e647d9322fb7c5fdfa8c6e1b0a0cf5d4a45b Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Wed, 30 Nov 2022 15:16:13 +0100 Subject: [PATCH] arm64: dts: renesas: r8a779f0: Add CA55 operating points MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Add operating points for running the Cortex-A55 CPU cores on R-Car S4-8 at various speeds, up to the maximum supported frequency (1200 MHz). R-Car S4-8 has 8 Cortex-A55 cores, grouped in 4 clusters. CA55 Sub-System 0 (first 2 clusters / CPU cores 0-3) is clocked by Z0φ. CA55 Sub-System 1 (last 2 clusters / CPU cores 4-7) is clocked by Z1φ. As the two sets of clusters are driven by separate clocks, this requires specifying two separate tables (using the same operating performance point values), with "opp-shared" to indicate that the CPU cores in each set share state. Based on a patch in the BSP by Tho Vu. Signed-off-by: Geert Uytterhoeven Acked-by: Viresh Kumar Link: https://lore.kernel.org/r/ae78351d702a53702a1d5fa26675fe982b99cdf5.1669817508.git.geert+renesas@glider.be --- arch/arm64/boot/dts/renesas/r8a779f0.dtsi | 62 +++++++++++++++++++++++ 1 file changed, 62 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/r8a779f0.dtsi b/arch/arm64/boot/dts/renesas/r8a779f0.dtsi index 67a4f2d4480d8..ac294168c8678 100644 --- a/arch/arm64/boot/dts/renesas/r8a779f0.dtsi +++ b/arch/arm64/boot/dts/renesas/r8a779f0.dtsi @@ -14,6 +14,60 @@ #address-cells = <2>; #size-cells = <2>; + cluster01_opp: opp-table-0 { + compatible = "operating-points-v2"; + opp-shared; + + opp-500000000 { + opp-hz = /bits/ 64 <500000000>; + opp-microvolt = <880000>; + clock-latency-ns = <500000>; + }; + opp-800000000 { + opp-hz = /bits/ 64 <800000000>; + opp-microvolt = <880000>; + clock-latency-ns = <500000>; + }; + opp-1000000000 { + opp-hz = /bits/ 64 <1000000000>; + opp-microvolt = <880000>; + clock-latency-ns = <500000>; + }; + opp-1200000000 { + opp-hz = /bits/ 64 <1200000000>; + opp-microvolt = <880000>; + clock-latency-ns = <500000>; + opp-suspend; + }; + }; + + cluster23_opp: opp-table-1 { + compatible = "operating-points-v2"; + opp-shared; + + opp-500000000 { + opp-hz = /bits/ 64 <500000000>; + opp-microvolt = <880000>; + clock-latency-ns = <500000>; + }; + opp-800000000 { + opp-hz = /bits/ 64 <800000000>; + opp-microvolt = <880000>; + clock-latency-ns = <500000>; + }; + opp-1000000000 { + opp-hz = /bits/ 64 <1000000000>; + opp-microvolt = <880000>; + clock-latency-ns = <500000>; + }; + opp-1200000000 { + opp-hz = /bits/ 64 <1200000000>; + opp-microvolt = <880000>; + clock-latency-ns = <500000>; + opp-suspend; + }; + }; + cpus { #address-cells = <1>; #size-cells = <0>; @@ -65,6 +119,7 @@ enable-method = "psci"; cpu-idle-states = <&CPU_SLEEP_0>; clocks = <&cpg CPG_CORE R8A779F0_CLK_Z0>; + operating-points-v2 = <&cluster01_opp>; }; a55_1: cpu@100 { @@ -76,6 +131,7 @@ enable-method = "psci"; cpu-idle-states = <&CPU_SLEEP_0>; clocks = <&cpg CPG_CORE R8A779F0_CLK_Z0>; + operating-points-v2 = <&cluster01_opp>; }; a55_2: cpu@10000 { @@ -87,6 +143,7 @@ enable-method = "psci"; cpu-idle-states = <&CPU_SLEEP_0>; clocks = <&cpg CPG_CORE R8A779F0_CLK_Z0>; + operating-points-v2 = <&cluster01_opp>; }; a55_3: cpu@10100 { @@ -98,6 +155,7 @@ enable-method = "psci"; cpu-idle-states = <&CPU_SLEEP_0>; clocks = <&cpg CPG_CORE R8A779F0_CLK_Z0>; + operating-points-v2 = <&cluster01_opp>; }; a55_4: cpu@20000 { @@ -109,6 +167,7 @@ enable-method = "psci"; cpu-idle-states = <&CPU_SLEEP_0>; clocks = <&cpg CPG_CORE R8A779F0_CLK_Z1>; + operating-points-v2 = <&cluster23_opp>; }; a55_5: cpu@20100 { @@ -120,6 +179,7 @@ enable-method = "psci"; cpu-idle-states = <&CPU_SLEEP_0>; clocks = <&cpg CPG_CORE R8A779F0_CLK_Z1>; + operating-points-v2 = <&cluster23_opp>; }; a55_6: cpu@30000 { @@ -131,6 +191,7 @@ enable-method = "psci"; cpu-idle-states = <&CPU_SLEEP_0>; clocks = <&cpg CPG_CORE R8A779F0_CLK_Z1>; + operating-points-v2 = <&cluster23_opp>; }; a55_7: cpu@30100 { @@ -142,6 +203,7 @@ enable-method = "psci"; cpu-idle-states = <&CPU_SLEEP_0>; clocks = <&cpg CPG_CORE R8A779F0_CLK_Z1>; + operating-points-v2 = <&cluster23_opp>; }; L3_CA55_0: cache-controller-0 { -- 2.30.2