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authorLiviu Dudau <Liviu.Dudau@arm.com>2016-03-07 05:44:54 -0500
committerLiviu Dudau <Liviu.Dudau@arm.com>2016-06-15 10:18:20 -0400
commitee6ea993dfb27c4a809c3384b19b58eebea65a36 (patch)
tree2bb4bf08a7d69cd3859f1c9a462a2da627521ed2
parent0d841ac0ec213f70ab59d65129e80f229846fadf (diff)
dt/bindings: display: Add DT bindings for Mali Display Processors.
Add DT bindings documentation for the Mali Display Processor. The bindings describe the Mali DP500, DP550 and DP650 processors from ARM Ltd. Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com> Acked-by: Rob Herring <robh@kernel.org>
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1ARM Mali-DP
2
3The following bindings apply to a family of Display Processors sold as
4licensable IP by ARM Ltd. The bindings describe the Mali DP500, DP550 and
5DP650 processors that offer multiple composition layers, support for
6rotation and scaling output.
7
8Required properties:
9 - compatible: should be one of
10 "arm,mali-dp500"
11 "arm,mali-dp550"
12 "arm,mali-dp650"
13 depending on the particular implementation present in the hardware
14 - reg: Physical base address and size of the block of registers used by
15 the processor.
16 - interrupts: Interrupt list, as defined in ../interrupt-controller/interrupts.txt,
17 interrupt client nodes.
18 - interrupt-names: name of the engine inside the processor that will
19 use the corresponding interrupt. Should be one of "DE" or "SE".
20 - clocks: A list of phandle + clock-specifier pairs, one for each entry
21 in 'clock-names'
22 - clock-names: A list of clock names. It should contain:
23 - "pclk": for the APB interface clock
24 - "aclk": for the AXI interface clock
25 - "mclk": for the main processor clock
26 - "pxlclk": for the pixel clock feeding the output PLL of the processor.
27 - arm,malidp-output-port-lines: Array of u8 values describing the number
28 of output lines per channel (R, G and B).
29
30Required sub-nodes:
31 - port: The Mali DP connection to an encoder input port. The connection
32 is modelled using the OF graph bindings specified in
33 Documentation/devicetree/bindings/graph.txt
34
35Optional properties:
36 - memory-region: phandle to a node describing memory (see
37 Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt)
38 to be used for the framebuffer; if not present, the framebuffer may
39 be located anywhere in memory.
40
41
42Example:
43
44/ {
45 ...
46
47 dp0: malidp@6f200000 {
48 compatible = "arm,mali-dp650";
49 reg = <0 0x6f200000 0 0x20000>;
50 memory-region = <&display_reserved>;
51 interrupts = <0 168 IRQ_TYPE_LEVEL_HIGH>,
52 <0 168 IRQ_TYPE_LEVEL_HIGH>;
53 interrupt-names = "DE", "SE";
54 clocks = <&oscclk2>, <&fpgaosc0>, <&fpgaosc1>, <&fpgaosc1>;
55 clock-names = "pxlclk", "mclk", "aclk", "pclk";
56 arm,malidp-output-port-lines = /bits/ 8 <8 8 8>;
57 port {
58 dp0_output: endpoint {
59 remote-endpoint = <&tda998x_2_input>;
60 };
61 };
62 };
63
64 ...
65};