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# SPDX-License-Identifier: GPL-2.0-only
%YAML 1.2
---
$id: http://devicetree.org/schemas/gpu/arm,mali-bifrost.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ARM Mali Bifrost GPU
maintainers:
- Rob Herring <robh@kernel.org>
properties:
$nodename:
pattern: '^gpu@[a-f0-9]+$'
compatible:
items:
- enum:
- amlogic,meson-g12a-mali
- realtek,rtd1619-mali
- rockchip,px30-mali
- const: arm,mali-bifrost # Mali Bifrost GPU model/revision is fully discoverable
reg:
maxItems: 1
interrupts:
items:
- description: Job interrupt
- description: MMU interrupt
- description: GPU interrupt
interrupt-names:
items:
- const: job
- const: mmu
- const: gpu
clocks:
maxItems: 1
mali-supply: true
operating-points-v2: true
power-domains:
maxItems: 1
resets:
maxItems: 2
"#cooling-cells":
const: 2
dynamic-power-coefficient:
$ref: '/schemas/types.yaml#/definitions/uint32'
description:
A u32 value that represents the running time dynamic
power coefficient in units of uW/MHz/V^2. The
coefficient can either be calculated from power
measurements or derived by analysis.
The dynamic power consumption of the GPU is
proportional to the square of the Voltage (V) and
the clock frequency (f). The coefficient is used to
calculate the dynamic power as below -
Pdyn = dynamic-power-coefficient * V^2 * f
where voltage is in V, frequency is in MHz.
dma-coherent: true
required:
- compatible
- reg
- interrupts
- interrupt-names
- clocks
additionalProperties: false
allOf:
- if:
properties:
compatible:
contains:
const: amlogic,meson-g12a-mali
then:
required:
- resets
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
gpu@ffe40000 {
compatible = "amlogic,meson-g12a-mali", "arm,mali-bifrost";
reg = <0xffe40000 0x10000>;
interrupts = <GIC_SPI 160 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 161 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 162 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "job", "mmu", "gpu";
clocks = <&clk 1>;
mali-supply = <&vdd_gpu>;
operating-points-v2 = <&gpu_opp_table>;
resets = <&reset 0>, <&reset 1>;
};
gpu_opp_table: opp_table0 {
compatible = "operating-points-v2";
opp-533000000 {
opp-hz = /bits/ 64 <533000000>;
opp-microvolt = <1250000>;
};
opp-450000000 {
opp-hz = /bits/ 64 <450000000>;
opp-microvolt = <1150000>;
};
opp-400000000 {
opp-hz = /bits/ 64 <400000000>;
opp-microvolt = <1125000>;
};
opp-350000000 {
opp-hz = /bits/ 64 <350000000>;
opp-microvolt = <1075000>;
};
opp-266000000 {
opp-hz = /bits/ 64 <266000000>;
opp-microvolt = <1025000>;
};
opp-160000000 {
opp-hz = /bits/ 64 <160000000>;
opp-microvolt = <925000>;
};
opp-100000000 {
opp-hz = /bits/ 64 <100000000>;
opp-microvolt = <912500>;
};
};
...
|
