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-Broadcom VC4 (VideoCore4) GPU
-
-The VC4 device present on the Raspberry Pi includes a display system
-with HDMI output and the HVS (Hardware Video Scaler) for compositing
-display planes.
-
-Required properties for VC4:
-- compatible: Should be "brcm,bcm2835-vc4" or "brcm,cygnus-vc4"
-
-Required properties for Pixel Valve:
-- compatible: Should be one of "brcm,bcm2835-pixelvalve0",
- "brcm,bcm2835-pixelvalve1", or "brcm,bcm2835-pixelvalve2"
-- reg: Physical base address and length of the PV's registers
-- interrupts: The interrupt number
- See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
-
-Required properties for HVS:
-- compatible: Should be "brcm,bcm2835-hvs"
-- reg: Physical base address and length of the HVS's registers
-- interrupts: The interrupt number
- See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
-
-Required properties for HDMI
-- compatible: Should be "brcm,bcm2835-hdmi"
-- reg: Physical base address and length of the two register ranges
- ("HDMI" and "HD", in that order)
-- interrupts: The interrupt numbers
- See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
-- ddc: phandle of the I2C controller used for DDC EDID probing
-- clocks: a) hdmi: The HDMI state machine clock
- b) pixel: The pixel clock.
-
-Optional properties for HDMI:
-- hpd-gpios: The GPIO pin for HDMI hotplug detect (if it doesn't appear
- as an interrupt/status bit in the HDMI controller
- itself). See bindings/pinctrl/brcm,bcm2835-gpio.txt
-- dmas: Should contain one entry pointing to the DMA channel used to
- transfer audio data
-- dma-names: Should contain "audio-rx"
-
-Required properties for DPI:
-- compatible: Should be "brcm,bcm2835-dpi"
-- reg: Physical base address and length of the registers
-- clocks: a) core: The core clock the unit runs on
- b) pixel: The pixel clock that feeds the pixelvalve
-- port: Port node with a single endpoint connecting to the panel
- device, as defined in [1]
-
-Required properties for VEC:
-- compatible: Should be "brcm,bcm2835-vec"
-- reg: Physical base address and length of the registers
-- clocks: The core clock the unit runs on
-- interrupts: The interrupt number
- See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
-
-Required properties for V3D:
-- compatible: Should be "brcm,bcm2835-v3d" or "brcm,cygnus-v3d"
-- reg: Physical base address and length of the V3D's registers
-- interrupts: The interrupt number
- See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
-
-Optional properties for V3D:
-- clocks: The clock the unit runs on
-
-Required properties for DSI:
-- compatible: Should be "brcm,bcm2835-dsi0" or "brcm,bcm2835-dsi1"
-- reg: Physical base address and length of the DSI block's registers
-- interrupts: The interrupt number
- See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
-- clocks: a) phy: The DSI PLL clock feeding the DSI analog PHY
- b) escape: The DSI ESC clock from CPRMAN
- c) pixel: The DSI pixel clock from CPRMAN
-- clock-output-names:
- The 3 clocks output from the DSI analog PHY: dsi[01]_byte,
- dsi[01]_ddr2, and dsi[01]_ddr
-
-Required properties for the TXP (writeback) block:
-- compatible: Should be "brcm,bcm2835-txp"
-- reg: Physical base address and length of the TXP block's registers
-- interrupts: The interrupt number
- See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
-
-[1] Documentation/devicetree/bindings/media/video-interfaces.txt
-
-Example:
-pixelvalve@7e807000 {
- compatible = "brcm,bcm2835-pixelvalve2";
- reg = <0x7e807000 0x100>;
- interrupts = <2 10>; /* pixelvalve */
-};
-
-hvs@7e400000 {
- compatible = "brcm,bcm2835-hvs";
- reg = <0x7e400000 0x6000>;
- interrupts = <2 1>;
-};
-
-hdmi: hdmi@7e902000 {
- compatible = "brcm,bcm2835-hdmi";
- reg = <0x7e902000 0x600>,
- <0x7e808000 0x100>;
- interrupts = <2 8>, <2 9>;
- ddc = <&i2c2>;
- hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
- clocks = <&clocks BCM2835_PLLH_PIX>,
- <&clocks BCM2835_CLOCK_HSM>;
- clock-names = "pixel", "hdmi";
-};
-
-dpi: dpi@7e208000 {
- compatible = "brcm,bcm2835-dpi";
- reg = <0x7e208000 0x8c>;
- clocks = <&clocks BCM2835_CLOCK_VPU>,
- <&clocks BCM2835_CLOCK_DPI>;
- clock-names = "core", "pixel";
- #address-cells = <1>;
- #size-cells = <0>;
-
- port {
- dpi_out: endpoint@0 {
- remote-endpoint = <&panel_in>;
- };
- };
-};
-
-dsi1: dsi@7e700000 {
- compatible = "brcm,bcm2835-dsi1";
- reg = <0x7e700000 0x8c>;
- interrupts = <2 12>;
- #address-cells = <1>;
- #size-cells = <0>;
- #clock-cells = <1>;
-
- clocks = <&clocks BCM2835_PLLD_DSI1>,
- <&clocks BCM2835_CLOCK_DSI1E>,
- <&clocks BCM2835_CLOCK_DSI1P>;
- clock-names = "phy", "escape", "pixel";
-
- clock-output-names = "dsi1_byte", "dsi1_ddr2", "dsi1_ddr";
-
- pitouchscreen: panel@0 {
- compatible = "raspberrypi,touchscreen";
- reg = <0>;
-
- <...>
- };
-};
-
-vec: vec@7e806000 {
- compatible = "brcm,bcm2835-vec";
- reg = <0x7e806000 0x1000>;
- clocks = <&clocks BCM2835_CLOCK_VEC>;
- interrupts = <2 27>;
-};
-
-v3d: v3d@7ec00000 {
- compatible = "brcm,bcm2835-v3d";
- reg = <0x7ec00000 0x1000>;
- interrupts = <1 10>;
-};
-
-vc4: gpu {
- compatible = "brcm,bcm2835-vc4";
-};
-
-panel: panel {
- compatible = "ontat,yx700wv03", "simple-panel";
-
- port {
- panel_in: endpoint {
- remote-endpoint = <&dpi_out>;
- };
- };
-};