These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / display / brcm,bcm-vc4.txt

diff --git a/kernel/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt b/kernel/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt
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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"
+
+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
+
+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";
+};
+
+vc4: gpu {
+       compatible = "brcm,bcm2835-vc4";
+};