From 46ffadc7e658277d7559899d7f641f14a3cfae8c Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Sun, 19 Jul 2020 19:32:11 +0200 Subject: [PATCH] arm64: dts: amlogic: meson-gx: add the Mali-450 OPP table and use DVFS Add the OPP table for the Mali-450 GPU and drop the hardcoded initial clock configuration. This enables GPU DVFS and thus saves power when the GPU is not in use while still being able switch to a higher clock on demand. Set the GP0_PLL clock to 744MHz (which is the only frequency which cannot be derived from the FCLK dividers) as the clock driver avoids setting the parent clock rates so the MPLL clocks aren't changed (as these are reserved for audio). The only exception to this is the GXL S805X package because the 744MHz OPP isn't working correctly there. While here, make most of meson-gxl-mali re-usable to reduce the amount of duplicate code between GXBB and GXL. This is more important now as we don't want to duplicate the GPU OPP table. Signed-off-by: Martin Blumenstingl Signed-off-by: Kevin Hilman Link: https://lore.kernel.org/r/20200719173213.639540-2-martin.blumenstingl@googlemail.com --- .../boot/dts/amlogic/meson-gx-mali450.dtsi | 61 +++++++++++++++++++ arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 51 ++++------------ .../boot/dts/amlogic/meson-gxl-mali.dtsi | 46 +++----------- .../boot/dts/amlogic/meson-gxl-s805x.dtsi | 19 +++--- 4 files changed, 90 insertions(+), 87 deletions(-) create mode 100644 arch/arm64/boot/dts/amlogic/meson-gx-mali450.dtsi diff --git a/arch/arm64/boot/dts/amlogic/meson-gx-mali450.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx-mali450.dtsi new file mode 100644 index 000000000000..f9771b51c852 --- /dev/null +++ b/arch/arm64/boot/dts/amlogic/meson-gx-mali450.dtsi @@ -0,0 +1,61 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright (c) 2017 BayLibre SAS + * Author: Neil Armstrong + */ + +/ { + gpu_opp_table: opp-table { + compatible = "operating-points-v2"; + + opp-125000000 { + opp-hz = /bits/ 64 <125000000>; + opp-microvolt = <950000>; + }; + opp-250000000 { + opp-hz = /bits/ 64 <250000000>; + opp-microvolt = <950000>; + }; + opp-285714285 { + opp-hz = /bits/ 64 <285714285>; + opp-microvolt = <950000>; + }; + opp-400000000 { + opp-hz = /bits/ 64 <400000000>; + opp-microvolt = <950000>; + }; + opp-500000000 { + opp-hz = /bits/ 64 <500000000>; + opp-microvolt = <950000>; + }; + opp-666666666 { + opp-hz = /bits/ 64 <666666666>; + opp-microvolt = <950000>; + }; + opp-744000000 { + opp-hz = /bits/ 64 <744000000>; + opp-microvolt = <950000>; + }; + }; +}; + +&apb { + mali: gpu@c0000 { + compatible = "arm,mali-450"; + reg = <0x0 0xc0000 0x0 0x40000>; + interrupts = , + , + , + , + , + , + , + , + , + ; + interrupt-names = "gp", "gpmmu", "pp", "pmu", + "pp0", "ppmmu0", "pp1", "ppmmu1", + "pp2", "ppmmu2"; + operating-points-v2 = <&gpu_opp_table>; + }; +}; diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi index ea50dd434887..7c029f552a23 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi @@ -4,6 +4,7 @@ */ #include "meson-gx.dtsi" +#include "meson-gx-mali450.dtsi" #include #include #include @@ -264,46 +265,6 @@ mux { }; }; -&apb { - mali: gpu@c0000 { - compatible = "amlogic,meson-gxbb-mali", "arm,mali-450"; - reg = <0x0 0xc0000 0x0 0x40000>; - interrupts = , - , - , - , - , - , - , - , - , - ; - interrupt-names = "gp", "gpmmu", "pp", "pmu", - "pp0", "ppmmu0", "pp1", "ppmmu1", - "pp2", "ppmmu2"; - clocks = <&clkc CLKID_CLK81>, <&clkc CLKID_MALI>; - clock-names = "bus", "core"; - - /* - * Mali clocking is provided by two identical clock paths - * MALI_0 and MALI_1 muxed to a single clock by a glitch - * free mux to safely change frequency while running. - */ - assigned-clocks = <&clkc CLKID_GP0_PLL>, - <&clkc CLKID_MALI_0_SEL>, - <&clkc CLKID_MALI_0>, - <&clkc CLKID_MALI>; /* Glitch free mux */ - assigned-clock-parents = <0>, /* Do Nothing */ - <&clkc CLKID_GP0_PLL>, - <0>, /* Do Nothing */ - <&clkc CLKID_MALI_0>; - assigned-clock-rates = <744000000>, - <0>, /* Do Nothing */ - <744000000>, - <0>; /* Do Nothing */ - }; -}; - &cbus { spifc: spi@8c80 { compatible = "amlogic,meson-gxbb-spifc"; @@ -386,6 +347,16 @@ &i2c_C { clocks = <&clkc CLKID_I2C>; }; +&mali { + compatible = "amlogic,meson-gxbb-mali", "arm,mali-450"; + + clocks = <&clkc CLKID_CLK81>, <&clkc CLKID_MALI>; + clock-names = "bus", "core"; + + assigned-clocks = <&clkc CLKID_GP0_PLL>; + assigned-clock-rates = <744000000>; +}; + &periphs { pinctrl_periphs: pinctrl@4b0 { compatible = "amlogic,meson-gxbb-periphs-pinctrl"; diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-mali.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxl-mali.dtsi index 6aaafff674f9..478e755cc87c 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxl-mali.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gxl-mali.dtsi @@ -4,42 +4,14 @@ * Author: Neil Armstrong */ -&apb { - mali: gpu@c0000 { - compatible = "amlogic,meson-gxl-mali", "arm,mali-450"; - reg = <0x0 0xc0000 0x0 0x40000>; - interrupts = , - , - , - , - , - , - , - , - , - ; - interrupt-names = "gp", "gpmmu", "pp", "pmu", - "pp0", "ppmmu0", "pp1", "ppmmu1", - "pp2", "ppmmu2"; - clocks = <&clkc CLKID_CLK81>, <&clkc CLKID_MALI>; - clock-names = "bus", "core"; +#include "meson-gx-mali450.dtsi" - /* - * Mali clocking is provided by two identical clock paths - * MALI_0 and MALI_1 muxed to a single clock by a glitch - * free mux to safely change frequency while running. - */ - assigned-clocks = <&clkc CLKID_GP0_PLL>, - <&clkc CLKID_MALI_0_SEL>, - <&clkc CLKID_MALI_0>, - <&clkc CLKID_MALI>; /* Glitch free mux */ - assigned-clock-parents = <0>, /* Do Nothing */ - <&clkc CLKID_GP0_PLL>, - <0>, /* Do Nothing */ - <&clkc CLKID_MALI_0>; - assigned-clock-rates = <744000000>, - <0>, /* Do Nothing */ - <744000000>, - <0>; /* Do Nothing */ - }; +&mali { + compatible = "amlogic,meson-gxl-mali", "arm,mali-450"; + + clocks = <&clkc CLKID_CLK81>, <&clkc CLKID_MALI>; + clock-names = "bus", "core"; + + assigned-clocks = <&clkc CLKID_GP0_PLL>; + assigned-clock-rates = <744000000>; }; diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s805x.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxl-s805x.dtsi index f9d705648426..29975849822c 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxl-s805x.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s805x.dtsi @@ -11,14 +11,13 @@ / { }; /* The S805X Package doesn't seem to handle the 744MHz OPP correctly */ -&mali { - assigned-clocks = <&clkc CLKID_MALI_0_SEL>, - <&clkc CLKID_MALI_0>, - <&clkc CLKID_MALI>; /* Glitch free mux */ - assigned-clock-parents = <&clkc CLKID_FCLK_DIV3>, - <0>, /* Do Nothing */ - <&clkc CLKID_MALI_0>; - assigned-clock-rates = <0>, /* Do Nothing */ - <666666666>, - <0>; /* Do Nothing */ +&gpu_opp_table { + opp-744000000 { + status = "disabled"; + }; +}; + +&mali { + /delete-property/ assigned-clocks; + /delete-property/ assigned-clock-rates; };