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#
# (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";
};
};
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