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From: Neil Armstrong <narmstrong@baylibre.com>
To: jbrunet@baylibre.com, khilman@baylibre.com
Cc: Neil Armstrong <narmstrong@baylibre.com>,
	martin.blumenstingl@googlemail.com, linux-kernel@vger.kernel.org,
	linux-gpio@vger.kernel.org, linux-amlogic@lists.infradead.org,
	linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: [RFC/RFT v3 11/14] arm64: dts: meson-g12a: add cpus OPP table
Date: Mon,  1 Jul 2019 11:12:55 +0200	[thread overview]
Message-ID: <20190701091258.3870-12-narmstrong@baylibre.com> (raw)
In-Reply-To: <20190701091258.3870-1-narmstrong@baylibre.com>

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@baylibre.com>
---
 arch/arm64/boot/dts/amlogic/meson-g12a.dtsi | 60 +++++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
index ac15967bb7fa..733a9d46fc4b 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
@@ -48,6 +48,66 @@
 			compatible = "cache";
 		};
 	};
+
+	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>;
+		};
+	};
 };
 
 &sd_emmc_a {
-- 
2.21.0


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  parent reply	other threads:[~2019-07-01  9:18 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-01  9:12 [RFC/RFT v3 00/14] arm64: g12a: add support for DVFS Neil Armstrong
2019-07-01  9:12 ` [RFC/RFT v3 01/14] pinctrl: meson-g12a: add pwm_a on GPIOE_2 pinmux Neil Armstrong
2019-07-02 22:56   ` Martin Blumenstingl
2019-07-01  9:12 ` [RFC/RFT v3 02/14] clk: core: introduce clk_hw_set_parent() Neil Armstrong
2019-07-02 23:05   ` Martin Blumenstingl
2019-07-01  9:12 ` [RFC/RFT v3 03/14] clk: meson: regmap: export regmap_div ops functions Neil Armstrong
2019-07-01  9:12 ` [RFC/RFT v3 04/14] clk: meson: eeclk: add setup callback Neil Armstrong
2019-07-02 23:16   ` Martin Blumenstingl
2019-07-03 11:45     ` Neil Armstrong
2019-07-03 12:40       ` Jerome Brunet
2019-07-03 12:57         ` Martin Blumenstingl
2019-07-03 14:17   ` Jerome Brunet
2019-07-26 14:50     ` Neil Armstrong
2019-07-29  7:42       ` Jerome Brunet
2019-07-01  9:12 ` [RFC/RFT v3 05/14] soc: amlogic: meson-clk-measure: protect measure with a mutex Neil Armstrong
2019-07-02 23:01   ` Martin Blumenstingl
2019-07-01  9:12 ` [RFC/RFT v3 06/14] soc: amlogic: meson-clk-measure: add G12B second cluster cpu clk Neil Armstrong
2019-07-02 22:58   ` Martin Blumenstingl
2019-07-01  9:12 ` [RFC/RFT v3 07/14] clk: meson: g12a: add notifiers to handle cpu clock change Neil Armstrong
2019-07-02 23:28   ` Martin Blumenstingl
2019-07-03 11:50     ` Neil Armstrong
2019-08-08  4:43     ` Stephen Boyd
2019-07-01  9:12 ` [RFC/RFT v3 08/14] clk: meson: g12a: expose CPUB clock ID for G12B Neil Armstrong
2019-07-02 23:03   ` Martin Blumenstingl
2019-07-01  9:12 ` [RFC/RFT v3 09/14] arm64: dts: move common G12A & G12B modes to meson-g12-common.dtsi Neil Armstrong
2019-07-02 23:54   ` Martin Blumenstingl
2019-07-03 11:51     ` Neil Armstrong
2019-07-03 12:48       ` Jerome Brunet
2019-07-01  9:12 ` [RFC/RFT v3 10/14] arm64: dts: meson-g12-common: add pwm_a on GPIOE_2 pinmux Neil Armstrong
2019-07-02 23:11   ` Martin Blumenstingl
2019-07-01  9:12 ` Neil Armstrong [this message]
2019-07-02 23:47   ` [RFC/RFT v3 11/14] arm64: dts: meson-g12a: add cpus OPP table Martin Blumenstingl
2019-07-03 11:53     ` Neil Armstrong
2019-07-03 12:12       ` Martin Blumenstingl
2019-07-01  9:12 ` [RFC/RFT v3 12/14] arm64: dts: meson-g12a: enable DVFS on G12A boards Neil Armstrong
2019-07-02 23:43   ` Martin Blumenstingl
2019-07-01  9:12 ` [RFC/RFT v3 13/14] arm64: dts: meson-g12b: add cpus OPP tables Neil Armstrong
2019-07-01  9:12 ` [RFC/RFT v3 14/14] arm64: dts: meson-g12b-odroid-n2: enable DVFS Neil Armstrong
2019-07-02 23:45   ` Martin Blumenstingl
2019-07-03 11:54     ` Neil Armstrong

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