1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
Xilinx mem2mem Multi Video Scaler (XM2MSC)
-----------------------------------------
Required propertie(s):
- compatible : Should be "xlnx,v-multi-scaler-v1.0"
- clocks : Input clock specifier. Refer to common clk bindings.
- interrupt-parent : Interrupt controller the interrupt is routed through
- interrupts : Should contain MultiScaler interrupt
- reset-gpios : Should contain GPIO reset phandle
- reg : Physical base address and
length of the registers set for the device.
- xlnx,max-chan : Maximum number of supported scaling channels (1 - 8)
- xlnx,max-width : Maximum number of supported column/width (64 - 3840)
- xlnx,max-height : Maximum number of supported row/height (64 - 2160)
- xlnx,dma-addr-width : dma address width (either 32 or 64)
- xlnx,pixels-per-clock : pixels per clock set in IP (1, 2 or 4)
- xlnx,vid-formats : A list of strings indicating what video memory
formats the IP has been configured to support.
See VIDEO FORMATS table below and examples.
- xlnx,num-taps : The number of filter taps for scaling (6, 8, 10, 12)
VIDEO FORMATS
The following table describes the legal string values to be used for
the xlnx,vid-formats property. To the left is the string value and the
column to the right describes the format.
IP FORMAT DTS String Description
-------------|----------------|---------------------
RGB8 bgr888 Packed RGB, 8 bits per component.
Every RGB pixel in memory is represented with
24 bits.
RGBX8 xbgr8888 Packed RGB, 8 bits per component. Every RGB
pixel in memory is represented with 32 bits.
Bits[31:24] do not contain pixel information.
BGRX8 xrgb8888 Packed BGR, 8 bits per component. Every BGR
pixel in memory is represented with 32 bits.
Bits[31:24] do not contain pixel information.
RGBX10 xbgr2101010 Packed RGB, 10 bits per component. Every RGB
pixel is represented with 32 bits. Bits[31:30]
do not contain any pixel information.
YUV8 vuy888 Packed YUV 4:4:4, 8 bits per component. Every
YUV 4:4:4 pixel in memory is represented with
24 bits.
YUVX8 xvuy8888 Packed YUV 4:4:4, 8 bits per component.
Every YUV 4:4:4 pixel in memory is represented
with 32 bits. Bits[31:24] do not contain pixel
information.
YUYV8 yuyv Packed YUV 4:2:2, 8 bits per component. Every
two YUV 4:2:2 pixels in memory are represented
with 32 bits.
UYVY8 uyvy Packed YUV 4:2:2, 8 bits per component.
Every two YUV 4:2:2 pixels in memory are
represented with 32 bits.
YUVX10 yuvx2101010 Packed YUV 4:4:4, 10 bits per component.
Every YUV 4:4:4 pixel is represented with 32 bits.
Bits[31:30] do not contain any pixel information.
Y8 y8 Packed Luma-Only, 8 bits per component. Every
luma-only pixel in memory is represented with
8 bits. Y8 is presented as YUV 4:4:4 on the
AXI4-Stream interface.
Y10 y10 Packed Luma-Only, 10 bits per component. Every
three luma-only pixels in memory is represented
with 32 bits. Y10 is presented as YUV 4:4:4 on
the AXI4-Stream interface.
Y_UV8 nv16 Semi-planar YUV 4:2:2 with 8 bits per component.
Y and UV stored in separate planes.
Y_UV8_420 nv12 Semi-planar YUV 4:2:0 with 8 bits per component.
Y and UV stored in separate planes.
Y_UV10 xv20 Semi-planar YUV 4:2:2 with 10 bits per component.
Every 3 pixels is represented with 32 bits.
Bits[31:30] do not contain any pixel information.
Y and UV stored in separate planes.
Y_UV10_420 xv15 Semi-planar YUV 4:2:0 with 10 bits per component.
Every 3 pixels is represented with 32 bits.
Bits[31:30] do not contain any pixel information.
Y and UV stored in separate planes.
Example
v_multi_scaler_0: v_multi_scaler@a0000000 {\
clocks = <&clk 71>;
compatible = "xlnx,v-multi-scaler-v1.0";
interrupt-names = "interrupt";
interrupt-parent = <&gic>;
interrupts = <0 89 4>;
reg = <0x0 0xa0000000 0x0 0x10000>;
xlnx,vid-formats = "bgr888","vuy888";
reset-gpios = <&gpio 78 1>;
xlnx,max-chan = <0x01>;
xlnx,dma-addr-width = <0x20>;
xlnx,pixels-per-clock = /bits/ 8 <2>;
xlnx,max-width = <3840>;
xlnx,max-height = <2160>;
xlnx,num-taps = <6>;
};
|
