1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2# Copyright 2019 Texas Instruments Incorporated 3%YAML 1.2 4--- 5$id: "http://devicetree.org/schemas/display/ti/ti,am65x-dss.yaml#" 6$schema: "http://devicetree.org/meta-schemas/core.yaml#" 7 8title: Texas Instruments AM65x Display Subsystem 9 10maintainers: 11 - Jyri Sarha <jsarha@ti.com> 12 - Tomi Valkeinen <tomi.valkeinen@ti.com> 13 14description: | 15 The AM65x TI Keystone Display SubSystem with two output ports and 16 two video planes. The first video port supports OLDI and the second 17 supports DPI format. The fist plane is full video plane with all 18 features and the second is a "lite plane" without scaling support. 19 20properties: 21 compatible: 22 const: ti,am65x-dss 23 24 reg: 25 description: 26 Addresses to each DSS memory region described in the SoC's TRM. 27 items: 28 - description: common DSS register area 29 - description: VIDL1 light video plane 30 - description: VID video plane 31 - description: OVR1 overlay manager for vp1 32 - description: OVR2 overlay manager for vp2 33 - description: VP1 video port 1 34 - description: VP2 video port 2 35 36 reg-names: 37 items: 38 - const: common 39 - const: vidl1 40 - const: vid 41 - const: ovr1 42 - const: ovr2 43 - const: vp1 44 - const: vp2 45 46 clocks: 47 items: 48 - description: fck DSS functional clock 49 - description: vp1 Video Port 1 pixel clock 50 - description: vp2 Video Port 2 pixel clock 51 52 clock-names: 53 items: 54 - const: fck 55 - const: vp1 56 - const: vp2 57 58 assigned-clocks: 59 minItems: 1 60 maxItems: 3 61 62 assigned-clock-parents: 63 minItems: 1 64 maxItems: 3 65 66 interrupts: 67 maxItems: 1 68 69 power-domains: 70 maxItems: 1 71 description: phandle to the associated power domain 72 73 dma-coherent: 74 type: boolean 75 76 ports: 77 $ref: /schemas/graph.yaml#/properties/ports 78 79 properties: 80 port@0: 81 $ref: /schemas/graph.yaml#/properties/port 82 description: 83 The DSS OLDI output port node form video port 1 84 85 port@1: 86 $ref: /schemas/graph.yaml#/properties/port 87 description: 88 The DSS DPI output port node from video port 2 89 90 ti,am65x-oldi-io-ctrl: 91 $ref: "/schemas/types.yaml#/definitions/phandle" 92 description: 93 phandle to syscon device node mapping OLDI IO_CTRL registers. 94 The mapped range should point to OLDI_DAT0_IO_CTRL, map it and 95 following OLDI_DAT1_IO_CTRL, OLDI_DAT2_IO_CTRL, OLDI_DAT3_IO_CTRL, 96 and OLDI_CLK_IO_CTRL registers. This property is needed for OLDI 97 interface to work. 98 99 max-memory-bandwidth: 100 $ref: /schemas/types.yaml#/definitions/uint32 101 description: 102 Input memory (from main memory to dispc) bandwidth limit in 103 bytes per second 104 105required: 106 - compatible 107 - reg 108 - reg-names 109 - clocks 110 - clock-names 111 - interrupts 112 - ports 113 114additionalProperties: false 115 116examples: 117 - | 118 #include <dt-bindings/interrupt-controller/arm-gic.h> 119 #include <dt-bindings/interrupt-controller/irq.h> 120 #include <dt-bindings/soc/ti,sci_pm_domain.h> 121 122 dss: dss@4a00000 { 123 compatible = "ti,am65x-dss"; 124 reg = <0x04a00000 0x1000>, /* common */ 125 <0x04a02000 0x1000>, /* vidl1 */ 126 <0x04a06000 0x1000>, /* vid */ 127 <0x04a07000 0x1000>, /* ovr1 */ 128 <0x04a08000 0x1000>, /* ovr2 */ 129 <0x04a0a000 0x1000>, /* vp1 */ 130 <0x04a0b000 0x1000>; /* vp2 */ 131 reg-names = "common", "vidl1", "vid", 132 "ovr1", "ovr2", "vp1", "vp2"; 133 ti,am65x-oldi-io-ctrl = <&dss_oldi_io_ctrl>; 134 power-domains = <&k3_pds 67 TI_SCI_PD_EXCLUSIVE>; 135 clocks = <&k3_clks 67 1>, 136 <&k3_clks 216 1>, 137 <&k3_clks 67 2>; 138 clock-names = "fck", "vp1", "vp2"; 139 interrupts = <GIC_SPI 166 IRQ_TYPE_EDGE_RISING>; 140 ports { 141 #address-cells = <1>; 142 #size-cells = <0>; 143 port@0 { 144 reg = <0>; 145 oldi_out0: endpoint { 146 remote-endpoint = <&lcd_in0>; 147 }; 148 }; 149 }; 150 }; 151