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#
# (C) COPYRIGHT 2013-2015 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
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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