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-ARM HDLCD
-
-This is 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
-digital encoder (DVI or HDMI).
-
-Required properties:
- - compatible: "arm,hdlcd"
- - reg: Physical base address and length of the controller's registers.
- - interrupts: One interrupt used by the display controller to notify the
- interrupt controller when any of the interrupt sources programmed in
- the interrupt mask register have activated.
- - clocks: A list of phandle + clock-specifier pairs, one for each
- entry in 'clock-names'.
- - clock-names: A list of clock names. For HDLCD it should contain:
- - "pxlclk" for the clock feeding the output PLL of the controller.
-
-Required sub-nodes:
- - port: The HDLCD connection to an encoder chip. The connection is modeled
- using the OF graph bindings specified in
- Documentation/devicetree/bindings/graph.txt.
-
-Optional properties:
- - memory-region: phandle to a node describing memory (see
- Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt) to be
- used for the framebuffer; if not present, the framebuffer may be located
- anywhere in memory.
-
-
-Example:
-
-/ {
- ...
-
- hdlcd@2b000000 {
- compatible = "arm,hdlcd";
- reg = <0 0x2b000000 0 0x1000>;
- interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&oscclk5>;
- clock-names = "pxlclk";
- port {
- hdlcd_output: endpoint@0 {
- remote-endpoint = <&hdmi_enc_input>;
- };
- };
- };
-
- /* HDMI encoder on I2C bus */
- i2c@7ffa0000 {
- ....
- hdmi-transmitter@70 {
- compatible = ".....";
- reg = <0x70>;
- port@0 {
- hdmi_enc_input: endpoint {
- remote-endpoint = <&hdlcd_output>;
- };
-
- hdmi_enc_output: endpoint {
- remote-endpoint = <&hdmi_1_port>;
- };
- };
- };
-
- };
-
- hdmi1: connector@1 {
- compatible = "hdmi-connector";
- type = "a";
- port {
- hdmi_1_port: endpoint {
- remote-endpoint = <&hdmi_enc_output>;
- };
- };
- };
-
- ...
-};