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| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2022-11-30 17:16:13 +0300 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2023-01-10 11:44:02 +0300 |
| commit | ef10e647d9322fb7c5fdfa8c6e1b0a0cf5d4a45b (patch) | |
| tree | bb8e212ea2b3f9ab1251d01db98e684d9fdcee34 /arch/arm64/boot/dts/renesas | |
| parent | 3e9e6fc9c64f7b9b777c5b2c2e2c9a1326065137 (diff) | |
| download | linux-ef10e647d9322fb7c5fdfa8c6e1b0a0cf5d4a45b.tar.xz | |
arm64: dts: renesas: r8a779f0: Add CA55 operating points
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 <geert+renesas@glider.be>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/ae78351d702a53702a1d5fa26675fe982b99cdf5.1669817508.git.geert+renesas@glider.be
Diffstat (limited to 'arch/arm64/boot/dts/renesas')
| -rw-r--r-- | arch/arm64/boot/dts/renesas/r8a779f0.dtsi | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/renesas/r8a779f0.dtsi b/arch/arm64/boot/dts/renesas/r8a779f0.dtsi index 67a4f2d4480d..ac294168c867 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 { |