tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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>
+65
+65
Documentation/devicetree/bindings/display/arm,malidp.txt
+65
Documentation/devicetree/bindings/display/arm,malidp.txt
···
1
+
ARM Mali-DP
2
+
3
+
The following bindings apply to a family of Display Processors sold as
4
+
licensable IP by ARM Ltd. The bindings describe the Mali DP500, DP550 and
5
+
DP650 processors that offer multiple composition layers, support for
6
+
rotation and scaling output.
7
+
8
+
Required 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
+
30
+
Required 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
+
35
+
Optional 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
+
42
+
Example:
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
+
};