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Date: Thu, 20 Jun 2019 17:00:10 +0200 From: Neil Armstrong <narmstrong@...libre.com> To: jbrunet@...libre.com, khilman@...libre.com Cc: linux-arm-kernel@...ts.infradead.org, linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org, martin.blumenstingl@...glemail.com, Neil Armstrong <narmstrong@...libre.com> Subject: [RFC/RFT 11/14] arm64: dts: meson-g12a: add cpus OPP table Add the OPP table taken from the vendor u200 and u211 DTS. The Amlogic G12A SoC seems to available in 3 types : - low-speed: up to 1,8GHz - mid-speed: up to 1,908GHz - high-speed: up to 2.1GHz And the S905X2 opp voltages are slightly higher than the S905D2 OPP voltages for the low-speed table. This adds the conservative OPP table with the S905X2 higher voltages and the maximum low-speed OPP frequency. The values were tested to be stable on an Amlogic U200 Reference Board, SeiRobotics SEI510 and X96 Max Set-Top-Boxes running the arm64 cpuburn at [1] and cycling between all the possible cpufreq translations and checking the final frequency using the clock-measurer, script at [2]. [1] https://github.com/ssvb/cpuburn-arm/blob/master/cpuburn-a53.S [2] https://gist.github.com/superna9999/d4de964dbc0f84b7d527e1df2ddea25f Signed-off-by: Neil Armstrong <narmstrong@...libre.com> --- arch/arm64/boot/dts/amlogic/meson-g12a.dtsi | 62 ++++++++++++++++++++- 1 file changed, 59 insertions(+), 3 deletions(-) diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi index ac15967bb7fa..ba9aab39fd95 100644 --- a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi @@ -48,8 +48,64 @@ compatible = "cache"; }; }; -}; -&sd_emmc_a { - amlogic,dram-access-quirk; + cpu_opp_table: opp-table { + compatible = "operating-points-v2"; + opp-shared; + + opp-100000000 { + opp-hz = /bits/ 64 <100000000>; + opp-microvolt = <731000>; + }; + + opp-250000000 { + opp-hz = /bits/ 64 <250000000>; + opp-microvolt = <731000>; + }; + + opp-500000000 { + opp-hz = /bits/ 64 <500000000>; + opp-microvolt = <731000>; + }; + + opp-667000000 { + opp-hz = /bits/ 64 <666666666>; + opp-microvolt = <731000>; + }; + + opp-1000000000 { + opp-hz = /bits/ 64 <1000000000>; + opp-microvolt = <731000>; + }; + + opp-1200000000 { + opp-hz = /bits/ 64 <1200000000>; + opp-microvolt = <731000>; + }; + + opp-1398000000 { + opp-hz = /bits/ 64 <1398000000>; + opp-microvolt = <761000>; + }; + + opp-1512000000 { + opp-hz = /bits/ 64 <1512000000>; + opp-microvolt = <791000>; + }; + + opp-1608000000 { + opp-hz = /bits/ 64 <1608000000>; + opp-microvolt = <831000>; + }; + + opp-1704000000 { + opp-hz = /bits/ 64 <1704000000>; + opp-microvolt = <861000>; + }; + + opp-1800000000 { + opp-hz = /bits/ 64 <1800000000>; + opp-microvolt = <981000>; + }; + }; }; -- 2.21.0
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