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dt-bindings: Convert Arm Mali Midgard GPU to DT schema
Convert the Arm Midgard GPU binding to DT schema format. The 'clocks' property is now required. This simplifies the schema as effectively all the users require 'clocks' already and the upstream driver requires at least one clock. Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rob Herring <robh@kernel.org>
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Rob Herring
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ARM Mali Midgard GPU
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====================
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Required properties:
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- compatible :
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* Must contain one of the following:
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+ "arm,mali-t604"
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+ "arm,mali-t624"
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+ "arm,mali-t628"
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+ "arm,mali-t720"
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+ "arm,mali-t760"
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+ "arm,mali-t820"
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+ "arm,mali-t830"
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+ "arm,mali-t860"
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+ "arm,mali-t880"
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* which must be preceded by one of the following vendor specifics:
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+ "allwinner,sun50i-h6-mali"
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+ "amlogic,meson-gxm-mali"
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+ "samsung,exynos5433-mali"
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+ "rockchip,rk3288-mali"
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+ "rockchip,rk3399-mali"
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- reg : Physical base address of the device and length of the register area.
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- interrupts : Contains the three IRQ lines required by Mali Midgard devices.
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- interrupt-names : Contains the names of IRQ resources in the order they were
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provided in the interrupts property. Must contain: "job", "mmu", "gpu".
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Optional properties:
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- clocks : Phandle to clock for the Mali Midgard device.
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- clock-names : Specify the names of the clocks specified in clocks
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when multiple clocks are present.
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* core: clock driving the GPU itself (When only one clock is present,
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assume it's this clock.)
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* bus: bus clock for the GPU
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- mali-supply : Phandle to regulator for the Mali device. Refer to
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Documentation/devicetree/bindings/regulator/regulator.txt for details.
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- operating-points-v2 : Refer to Documentation/devicetree/bindings/opp/opp.txt
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for details.
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- #cooling-cells: Refer to Documentation/devicetree/bindings/thermal/thermal.txt
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for details.
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- resets : Phandle of the GPU reset line.
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Vendor-specific bindings
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------------------------
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The Mali GPU is integrated very differently from one SoC to
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another. In order to accommodate those differences, you have the option
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to specify one more vendor-specific compatible, among:
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- "allwinner,sun50i-h6-mali"
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Required properties:
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- clocks : phandles to core and bus clocks
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- clock-names : must contain "core" and "bus"
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- resets: phandle to GPU reset line
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- "amlogic,meson-gxm-mali"
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Required properties:
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- resets : Should contain phandles of :
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+ GPU reset line
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+ GPU APB glue reset line
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Example for a Mali-T760:
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gpu@ffa30000 {
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compatible = "rockchip,rk3288-mali", "arm,mali-t760";
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reg = <0xffa30000 0x10000>;
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interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-names = "job", "mmu", "gpu";
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clocks = <&cru ACLK_GPU>;
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mali-supply = <&vdd_gpu>;
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operating-points-v2 = <&gpu_opp_table>;
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power-domains = <&power RK3288_PD_GPU>;
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#cooling-cells = <2>;
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};
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gpu_opp_table: opp_table0 {
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compatible = "operating-points-v2";
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opp@533000000 {
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opp-hz = /bits/ 64 <533000000>;
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opp-microvolt = <1250000>;
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};
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opp@450000000 {
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opp-hz = /bits/ 64 <450000000>;
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opp-microvolt = <1150000>;
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};
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opp@400000000 {
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opp-hz = /bits/ 64 <400000000>;
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opp-microvolt = <1125000>;
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};
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opp@350000000 {
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opp-hz = /bits/ 64 <350000000>;
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opp-microvolt = <1075000>;
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};
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opp@266000000 {
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opp-hz = /bits/ 64 <266000000>;
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opp-microvolt = <1025000>;
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};
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opp@160000000 {
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opp-hz = /bits/ 64 <160000000>;
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opp-microvolt = <925000>;
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};
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opp@100000000 {
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opp-hz = /bits/ 64 <100000000>;
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opp-microvolt = <912500>;
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};
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};
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165
Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml
Normal file
165
Documentation/devicetree/bindings/gpu/arm,mali-midgard.yaml
Normal file
@ -0,0 +1,165 @@
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# SPDX-License-Identifier: GPL-2.0-only
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/gpu/arm,mali-midgard.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: ARM Mali Midgard GPU
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maintainers:
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- Rob Herring <robh@kernel.org>
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properties:
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$nodename:
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pattern: '^gpu@[a-f0-9]+$'
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compatible:
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oneOf:
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- items:
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- enum:
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- allwinner,sun50i-h6-mali
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- const: arm,mali-t720
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- items:
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- enum:
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- amlogic,meson-gxm-mali
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- const: arm,mali-t820
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- items:
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- enum:
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- rockchip,rk3288-mali
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- const: arm,mali-t760
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- items:
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- enum:
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- rockchip,rk3399-mali
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- const: arm,mali-t860
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- items:
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- enum:
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- samsung,exynos5433-mali
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- const: arm,mali-t760
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# "arm,mali-t604"
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# "arm,mali-t624"
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# "arm,mali-t628"
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# "arm,mali-t830"
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# "arm,mali-t880"
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reg:
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maxItems: 1
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interrupts:
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items:
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- description: Job interrupt
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- description: MMU interrupt
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- description: GPU interrupt
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interrupt-names:
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items:
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- const: job
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- const: mmu
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- const: gpu
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clocks:
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minItems: 1
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maxItems: 2
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clock-names:
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minItems: 1
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items:
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- const: core
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- const: bus
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mali-supply:
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maxItems: 1
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resets:
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minItems: 1
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maxItems: 2
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operating-points-v2: true
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"#cooling-cells":
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const: 2
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required:
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- compatible
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- reg
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- interrupts
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- interrupt-names
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- clocks
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allOf:
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- if:
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properties:
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compatible:
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contains:
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const: allwinner,sun50i-h6-mali
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then:
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properties:
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clocks:
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minItems: 2
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required:
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- clock-names
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- resets
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- if:
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properties:
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compatible:
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contains:
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const: amlogic,meson-gxm-mali
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then:
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properties:
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resets:
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minItems: 2
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required:
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- resets
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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gpu@ffa30000 {
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compatible = "rockchip,rk3288-mali", "arm,mali-t760";
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reg = <0xffa30000 0x10000>;
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interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-names = "job", "mmu", "gpu";
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clocks = <&cru 0>;
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mali-supply = <&vdd_gpu>;
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operating-points-v2 = <&gpu_opp_table>;
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power-domains = <&power 0>;
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#cooling-cells = <2>;
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};
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gpu_opp_table: opp_table0 {
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compatible = "operating-points-v2";
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opp@533000000 {
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opp-hz = /bits/ 64 <533000000>;
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opp-microvolt = <1250000>;
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};
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opp@450000000 {
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opp-hz = /bits/ 64 <450000000>;
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opp-microvolt = <1150000>;
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};
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opp@400000000 {
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opp-hz = /bits/ 64 <400000000>;
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opp-microvolt = <1125000>;
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};
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opp@350000000 {
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opp-hz = /bits/ 64 <350000000>;
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opp-microvolt = <1075000>;
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};
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opp@266000000 {
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opp-hz = /bits/ 64 <266000000>;
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opp-microvolt = <1025000>;
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};
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opp@160000000 {
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opp-hz = /bits/ 64 <160000000>;
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opp-microvolt = <925000>;
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};
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opp@100000000 {
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opp-hz = /bits/ 64 <100000000>;
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opp-microvolt = <912500>;
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};
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};
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...
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