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[cris-mirror.git] / Documentation / devicetree / bindings / display / brcm,bcm-vc4.txt
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1 Broadcom VC4 (VideoCore4) GPU
3 The VC4 device present on the Raspberry Pi includes a display system
4 with HDMI output and the HVS (Hardware Video Scaler) for compositing
5 display planes.
7 Required properties for VC4:
8 - compatible:   Should be "brcm,bcm2835-vc4" or "brcm,cygnus-vc4"
10 Required properties for Pixel Valve:
11 - compatible:   Should be one of "brcm,bcm2835-pixelvalve0",
12                   "brcm,bcm2835-pixelvalve1", or "brcm,bcm2835-pixelvalve2"
13 - reg:          Physical base address and length of the PV's registers
14 - interrupts:   The interrupt number
15                   See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
17 Required properties for HVS:
18 - compatible:   Should be "brcm,bcm2835-hvs"
19 - reg:          Physical base address and length of the HVS's registers
20 - interrupts:   The interrupt number
21                   See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
23 Required properties for HDMI
24 - compatible:   Should be "brcm,bcm2835-hdmi"
25 - reg:          Physical base address and length of the two register ranges
26                   ("HDMI" and "HD", in that order)
27 - interrupts:   The interrupt numbers
28                   See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
29 - ddc:          phandle of the I2C controller used for DDC EDID probing
30 - clocks:       a) hdmi: The HDMI state machine clock
31                 b) pixel: The pixel clock.
33 Optional properties for HDMI:
34 - hpd-gpios:    The GPIO pin for HDMI hotplug detect (if it doesn't appear
35                   as an interrupt/status bit in the HDMI controller
36                   itself).  See bindings/pinctrl/brcm,bcm2835-gpio.txt
37 - dmas:         Should contain one entry pointing to the DMA channel used to
38                 transfer audio data
39 - dma-names:    Should contain "audio-rx"
41 Required properties for DPI:
42 - compatible:   Should be "brcm,bcm2835-dpi"
43 - reg:          Physical base address and length of the registers
44 - clocks:       a) core: The core clock the unit runs on
45                 b) pixel: The pixel clock that feeds the pixelvalve
46 - port:         Port node with a single endpoint connecting to the panel
47                   device, as defined in [1]
49 Required properties for VEC:
50 - compatible:   Should be "brcm,bcm2835-vec"
51 - reg:          Physical base address and length of the registers
52 - clocks:       The core clock the unit runs on
53 - interrupts:   The interrupt number
54                   See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
56 Required properties for V3D:
57 - compatible:   Should be "brcm,bcm2835-v3d" or "brcm,cygnus-v3d"
58 - reg:          Physical base address and length of the V3D's registers
59 - interrupts:   The interrupt number
60                   See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
62 Optional properties for V3D:
63 - clocks:       The clock the unit runs on
65 Required properties for DSI:
66 - compatible:   Should be "brcm,bcm2835-dsi0" or "brcm,bcm2835-dsi1"
67 - reg:          Physical base address and length of the DSI block's registers
68 - interrupts:   The interrupt number
69                   See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
70 - clocks:       a) phy: The DSI PLL clock feeding the DSI analog PHY
71                 b) escape: The DSI ESC clock from CPRMAN
72                 c) pixel: The DSI pixel clock from CPRMAN
73 - clock-output-names:
74                 The 3 clocks output from the DSI analog PHY: dsi[01]_byte,
75                 dsi[01]_ddr2, and dsi[01]_ddr
77 [1] Documentation/devicetree/bindings/media/video-interfaces.txt
79 Example:
80 pixelvalve@7e807000 {
81         compatible = "brcm,bcm2835-pixelvalve2";
82         reg = <0x7e807000 0x100>;
83         interrupts = <2 10>; /* pixelvalve */
86 hvs@7e400000 {
87         compatible = "brcm,bcm2835-hvs";
88         reg = <0x7e400000 0x6000>;
89         interrupts = <2 1>;
92 hdmi: hdmi@7e902000 {
93         compatible = "brcm,bcm2835-hdmi";
94         reg = <0x7e902000 0x600>,
95               <0x7e808000 0x100>;
96         interrupts = <2 8>, <2 9>;
97         ddc = <&i2c2>;
98         hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
99         clocks = <&clocks BCM2835_PLLH_PIX>,
100                  <&clocks BCM2835_CLOCK_HSM>;
101         clock-names = "pixel", "hdmi";
104 dpi: dpi@7e208000 {
105         compatible = "brcm,bcm2835-dpi";
106         reg = <0x7e208000 0x8c>;
107         clocks = <&clocks BCM2835_CLOCK_VPU>,
108                  <&clocks BCM2835_CLOCK_DPI>;
109         clock-names = "core", "pixel";
110         #address-cells = <1>;
111         #size-cells = <0>;
113         port {
114                 dpi_out: endpoint@0 {
115                         remote-endpoint = <&panel_in>;
116                 };
117         };
120 dsi1: dsi@7e700000 {
121         compatible = "brcm,bcm2835-dsi1";
122         reg = <0x7e700000 0x8c>;
123         interrupts = <2 12>;
124         #address-cells = <1>;
125         #size-cells = <0>;
126         #clock-cells = <1>;
128         clocks = <&clocks BCM2835_PLLD_DSI1>,
129                  <&clocks BCM2835_CLOCK_DSI1E>,
130                  <&clocks BCM2835_CLOCK_DSI1P>;
131         clock-names = "phy", "escape", "pixel";
133         clock-output-names = "dsi1_byte", "dsi1_ddr2", "dsi1_ddr";
135         pitouchscreen: panel@0 {
136                 compatible = "raspberrypi,touchscreen";
137                 reg = <0>;
139                 <...>
140         };
143 vec: vec@7e806000 {
144         compatible = "brcm,bcm2835-vec";
145         reg = <0x7e806000 0x1000>;
146         clocks = <&clocks BCM2835_CLOCK_VEC>;
147         interrupts = <2 27>;
150 v3d: v3d@7ec00000 {
151         compatible = "brcm,bcm2835-v3d";
152         reg = <0x7ec00000 0x1000>;
153         interrupts = <1 10>;
156 vc4: gpu {
157         compatible = "brcm,bcm2835-vc4";
160 panel: panel {
161         compatible = "ontat,yx700wv03", "simple-panel";
163         port {
164                 panel_in: endpoint {
165                         remote-endpoint = <&dpi_out>;
166                 };
167         };