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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/mediatek/mediatek,merge.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Mediatek display merge
maintainers:
- Chun-Kuang Hu <chunkuang.hu@kernel.org>
- Philipp Zabel <p.zabel@pengutronix.de>
description: |
Mediatek display merge, namely MERGE, is used to merge two slice-per-line
inputs into one side-by-side output.
MERGE device node must be siblings to the central MMSYS_CONFIG node.
For a description of the MMSYS_CONFIG binding, see
Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
for details.
properties:
compatible:
oneOf:
- items:
- const: mediatek,mt8173-disp-merge
- items:
- const: mediatek,mt8195-disp-merge
reg:
maxItems: 1
interrupts:
maxItems: 1
power-domains:
description: A phandle and PM domain specifier as defined by bindings of
the power controller specified by phandle. See
Documentation/devicetree/bindings/power/power-domain.yaml for details.
clocks:
minItems: 1
maxItems: 2
clock-names:
oneOf:
- items:
- const: merge
- items:
- const: merge
- const: merge_async
mediatek,merge-fifo-en:
description:
The setting of merge fifo is mainly provided for the display latency
buffer to ensure that the back-end panel display data will not be
underrun, a little more data is needed in the fifo.
According to the merge fifo settings, when the water level is detected
to be insufficient, it will trigger RDMA sending ultra and preulra
command to SMI to speed up the data rate.
type: boolean
mediatek,merge-mute:
description: Support mute function. Mute the content of merge output.
type: boolean
mediatek,gce-client-reg:
description: The register of client driver can be configured by gce with
4 arguments defined in this property, such as phandle of gce, subsys id,
register offset and size. Each GCE subsys id is mapping to a client
defined in the header include/dt-bindings/gce/<chip>-gce.h.
$ref: /schemas/types.yaml#/definitions/phandle-array
maxItems: 1
resets:
description: reset controller
See Documentation/devicetree/bindings/reset/reset.txt for details.
maxItems: 1
required:
- compatible
- reg
- power-domains
- clocks
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/clock/mt8173-clk.h>
#include <dt-bindings/power/mt8173-power.h>
soc {
#address-cells = <2>;
#size-cells = <2>;
merge@14017000 {
compatible = "mediatek,mt8173-disp-merge";
reg = <0 0x14017000 0 0x1000>;
power-domains = <&spm MT8173_POWER_DOMAIN_MM>;
clocks = <&mmsys CLK_MM_DISP_MERGE>;
clock-names = "merge";
};
};
|
