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ARM HDLCD
This is a driver for a display controller found on several development
platforms produced by ARM Ltd and in more modern of its' Fast Models.
The HDLCD is an RGB streamer that reads the data from a framebuffer
and sends it to a single HDMI transmitter.
Required properties:
- compatible: "arm,hdlcd"
- reg: Physical base address and length of the controller's registers.
- interrupts: One interrupt used by the controller to multiplex all
the sources programmed in the interrupt mask register.
- clocks: A list of phandle + clock-specifier pairs, one for each entry
in clock-names.
- clock-names: A list of clock names. For HDLD it should containt:
* "pxlclk" for the clock feeding the output PLL of the controller.
Optional properties:
- i2c-slave: If the HDLCD is connected to an HDMI transmitter that is
reacheable via i2c, then use the phandle of the DDC slave here.
Optional children:
- display-timings: If the HDLCD is emulated by the Fast Model, place the
videomode(s) of the desired resolution(s) here. If multiple videomodes
are being used, a 'native-mode' property should be used to indicate the
preferred/default resolution. Refer to
Documentation/devicetree/bindings/video/display-timing.txt for details.
Example:
/ {
...
hdlcd@2b000000 {
compatible = "arm,hdlcd";
reg = <0 0x2b000000 0 0x1000>;
interrupts = <0 85 4>;
i2c-slave = <&dvi_i2c_slave>;
clocks = <&oscclk5>;
clock-names = "pxlclk";
};
/* DVI I2C bus */
v2m_i2c_dvi: i2c@160000 {
compatible = "arm,versatile-i2c";
reg = <0x160000 0x1000>;
#address-cells = <1>;
#size-cells = <0>;
dvi_i2c_slave: dvi-transmitter@39 {
compatible = "sil,sii9022-tpi", "sil,sii9022";
reg = <0x39>;
};
dvi-transmitter@60 {
compatible = "sil,sii9022-cpi", "sil,sii9022";
reg = <0x60>;
};
};
...
};
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