1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 $id: http://devicetree.org/schemas/soc/mediatek/mediatek,mutex.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Chun-Kuang Hu <chunkuang.hu@kernel.org>
11 - Philipp Zabel <p.zabel@pengutronix.de>
14 Mediatek mutex, namely MUTEX, is used to send the triggers signals called
15 Start Of Frame (SOF) / End Of Frame (EOF) to each sub-modules on the display
16 data path or MDP data path.
17 In some SoC, such as mt2701, MUTEX could be a hardware mutex which protects
19 MUTEX device node must be siblings to the central MMSYS_CONFIG node.
20 For a description of the MMSYS_CONFIG binding, see
21 Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
27 - mediatek,mt2701-disp-mutex
28 - mediatek,mt2712-disp-mutex
29 - mediatek,mt6795-disp-mutex
30 - mediatek,mt8167-disp-mutex
31 - mediatek,mt8173-disp-mutex
32 - mediatek,mt8183-disp-mutex
33 - mediatek,mt8186-disp-mutex
34 - mediatek,mt8186-mdp3-mutex
35 - mediatek,mt8188-disp-mutex
36 - mediatek,mt8192-disp-mutex
37 - mediatek,mt8195-disp-mutex
38 - mediatek,mt8195-vpp-mutex
39 - mediatek,mt8365-disp-mutex
48 description: A phandle and PM domain specifier as defined by bindings of
49 the power controller specified by phandle. See
50 Documentation/devicetree/bindings/power/power-domain.yaml for details.
54 - description: MUTEX Clock
58 The event id which is mapping to the specific hardware event signal
59 to gce. The event id is defined in the gce header
60 include/dt-bindings/gce/<chip>-gce.h of each chips.
61 $ref: /schemas/types.yaml#/definitions/uint32-array
63 mediatek,gce-client-reg:
64 $ref: /schemas/types.yaml#/definitions/phandle-array
67 - description: phandle of GCE
68 - description: GCE subsys id
69 - description: register offset
70 - description: register size
71 description: The register of client driver can be configured by gce with
72 4 arguments defined in this property. Each GCE subsys id is mapping to
73 a client defined in the header include/dt-bindings/gce/<chip>-gce.h.
81 - mediatek,mt2701-disp-mutex
82 - mediatek,mt2712-disp-mutex
83 - mediatek,mt6795-disp-mutex
84 - mediatek,mt8173-disp-mutex
85 - mediatek,mt8186-disp-mutex
86 - mediatek,mt8186-mdp3-mutex
87 - mediatek,mt8192-disp-mutex
88 - mediatek,mt8195-disp-mutex
100 additionalProperties: false
104 #include <dt-bindings/interrupt-controller/arm-gic.h>
105 #include <dt-bindings/clock/mt8173-clk.h>
106 #include <dt-bindings/power/mt8173-power.h>
107 #include <dt-bindings/gce/mt8173-gce.h>
110 #address-cells = <2>;
113 mutex: mutex@14020000 {
114 compatible = "mediatek,mt8173-disp-mutex";
115 reg = <0 0x14020000 0 0x1000>;
116 interrupts = <GIC_SPI 169 IRQ_TYPE_LEVEL_LOW>;
117 power-domains = <&spm MT8173_POWER_DOMAIN_MM>;
118 clocks = <&mmsys CLK_MM_MUTEX_32K>;
119 mediatek,gce-events = <CMDQ_EVENT_MUTEX0_STREAM_EOF>,
120 <CMDQ_EVENT_MUTEX1_STREAM_EOF>;