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Diffstat (limited to 'driver/product/kernel/Documentation/devicetree/bindings/arm/mali-midgard.txt')
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diff --git a/driver/product/kernel/Documentation/devicetree/bindings/arm/mali-midgard.txt b/driver/product/kernel/Documentation/devicetree/bindings/arm/mali-midgard.txt new file mode 100755 index 0000000..687b9f2 --- /dev/null +++ b/driver/product/kernel/Documentation/devicetree/bindings/arm/mali-midgard.txt @@ -0,0 +1,96 @@ +# +# (C) COPYRIGHT 2013-2016 ARM Limited. All rights reserved. +# +# This program is free software and is provided to you under the terms of the +# GNU General Public License version 2 as published by the Free Software +# Foundation, and any use by you of this program is subject to the terms +# of such GNU licence. +# +# A copy of the licence is included with the program, and can also be obtained +# from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, +# Boston, MA 02110-1301, USA. +# +# + + +* ARM Mali Midgard devices + + +Required properties: + +- compatible : Should be mali<chip>, replacing digits with x from the back, +until malit<Major>xx, ending with arm,mali-midgard, the latter not optional. +- reg : Physical base address of the device and length of the register area. +- interrupts : Contains the three IRQ lines required by T-6xx devices +- interrupt-names : Contains the names of IRQ resources in the order they were +provided in the interrupts property. Must contain: "JOB, "MMU", "GPU". + +Optional: + +- clocks : Phandle to clock for the Mali T-6xx device. +- clock-names : Shall be "clk_mali". +- mali-supply : Phandle to regulator for the Mali device. Refer to +Documentation/devicetree/bindings/regulator/regulator.txt for details. +- operating-points : Refer to Documentation/devicetree/bindings/power/opp.txt +for details. +- snoop_enable_smc : SMC function ID to enable CCI snooping on the GPU port(s). +- snoop_disable_smc : SMC function ID to disable CCI snooping on the GPU port(s). +- jm_config : For T860/T880. Sets job manager configuration. An array containing: + - 1 to override the TIMESTAMP value, 0 otherwise. + - 1 to override clock gate, forcing them to be always on, 0 otherwise. + - 1 to enable job throttle, limiting the number of cores that can be started + simultaneously, 0 otherwise. + - Value between 0 and 63 (including). If job throttle is enabled, this is one + less than the number of cores that can be started simultaneously. +- power_model : Sets power model parameters. Note that this model was designed for the Juno + platform, and may not be suitable for other platforms. A structure containing : + - compatible: Should be arm,mali-simple-power-model + - voltage: Voltage at reference point. Specified in mV. + - frequency: Frequency at reference point. Specified in MHz. + - dynamic-power: Dynamic power at reference frequency and voltage. Specified in mW. + - static-power: Static power at reference frequency. Specified in mW. + - ts: An array containing coefficients for the temperature scaling factor. + Used as : tsf = ts[3]*T^3 + ts[2]*T^2 + ts[1]*T + ts[0], where T = temperature + - thermal-zone: A string identifying the thermal zone used for the GPU +- system-coherency : Sets the coherency protocol to be used for coherent + accesses made from the GPU. + If not set then no coherency is used. + - 0 : ACE-Lite + - 1 : ACE + - 31 : No coherency +- ipa-model : Sets the IPA model to be used for power management. GPU probe will fail if the + model is not found in the registered models list. If no model is specified here, + a gpu-id based model is picked if available, otherwise the default model is used. + - generic_ipa_model : Default model used on mali + +Example for a Mali-T602: + +gpu@0xfc010000 { + compatible = "arm,malit602", "arm,malit60x", "arm,malit6xx", "arm,mali-midgard"; + reg = <0xfc010000 0x4000>; + interrupts = <0 36 4>, <0 37 4>, <0 38 4>; + interrupt-names = "JOB", "MMU", "GPU"; + + clocks = <&pclk_mali>; + clock-names = "clk_mali"; + mali-supply = <&vdd_mali>; + operating-points = < + /* KHz uV */ + 533000 1250000, + 450000 1150000, + 400000 1125000, + 350000 1075000, + 266000 1025000, + 160000 925000, + 100000 912500, + >; + power_model { + compatible = "arm,mali-simple-power-model"; + voltage = <800>; + frequency = <500>; + static-power = <500>; + dynamic-power = <1500>; + ts = <20000 2000 (-20) 2>; + thermal-zone = "gpu"; + }; +}; |