86 lines
1.9 KiB
YAML
86 lines
1.9 KiB
YAML
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/mailbox/mediatek,gce-mailbox.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Mediatek Global Command Engine Mailbox
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maintainers:
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- Houlong Wei <houlong.wei@mediatek.com>
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description:
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The Global Command Engine (GCE) is used to help read/write registers with
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critical time limitation, such as updating display configuration during the
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vblank. The GCE can be used to implement the Command Queue (CMDQ) driver.
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properties:
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compatible:
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enum:
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- mediatek,mt6779-gce
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- mediatek,mt8173-gce
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- mediatek,mt8183-gce
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- mediatek,mt8186-gce
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- mediatek,mt8192-gce
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- mediatek,mt8195-gce
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"#mbox-cells":
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const: 2
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description:
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The first cell describes the Thread ID of the GCE,
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the second cell describes the priority of the GCE thread
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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clocks:
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items:
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- description: Global Command Engine clock
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clock-names:
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items:
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- const: gce
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required:
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- compatible
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- "#mbox-cells"
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- reg
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- interrupts
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- clocks
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allOf:
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- if:
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not:
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properties:
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compatible:
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contains:
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const: mediatek,mt8195-gce
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then:
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required:
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- clock-names
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/clock/mt8173-clk.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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soc {
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#address-cells = <2>;
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#size-cells = <2>;
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gce: mailbox@10212000 {
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compatible = "mediatek,mt8173-gce";
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reg = <0 0x10212000 0 0x1000>;
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interrupts = <GIC_SPI 135 IRQ_TYPE_LEVEL_LOW>;
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#mbox-cells = <2>;
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clocks = <&infracfg CLK_INFRA_GCE>;
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clock-names = "gce";
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};
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};
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