SN65DSI86: Settings to display Color bar for DP

Niroshan Karunaratne

Part Number: SN65DSI86

Hello,

I am trying to bring up the SN65DSI86.

I have connected a monitor to the Display Port (J9) of the SN65DSI86 EVM (Rev 3) and need to test it by generating the color bar from the SN65DSI86.

Could you please provide me the register settings and correct dip switch (SW2) settings on the EVM.

My monitor EDID info is as follows.

Monitor

Model name............... ASUS VP228

Manufacturer............. Asus

Plug and Play ID......... ACI22C3

Serial number............ H9LMTF143814

Manufacture date......... 2017, ISO week 38

Filter driver............ None

-------------------------

EDID revision............ 1.3

Input signal type........ Analog 0.700,0.000 (0.7V p-p)

Sync input support....... Separate

Display type............. RGB color

Screen size.............. 480 x 270 mm (21.7 in)

Power management......... Active off/sleep

Extension blocs.......... None

-------------------------

DDC/CI................... Supported

MCCS revison............. 2.1

Display technology....... TFT

Controller............... Mstar 0x1600

Firmware revision........ 0.1

Firmware flags........... 0x00FF005A

Active power on time..... 65535 hours

Power consumption........ 6.55 kWh

Current frequency........ 67.50kHz, 60.00Hz

Color characteristics

Default color space...... Non-sRGB

Display gamma............ 2.20

Red chromaticity......... Rx 0.635 - Ry 0.352

Green chromaticity....... Gx 0.321 - Gy 0.633

Blue chromaticity........ Bx 0.151 - By 0.052

White point (default).... Wx 0.313 - Wy 0.329

Additional descriptors... None

Timing characteristics

Horizontal scan range.... 24-83kHz

Vertical scan range...... 50-75Hz

Video bandwidth.......... 170MHz

CVT standard............. Not supported

GTF standard............. Not supported

Additional descriptors... None

Preferred timing......... Yes

Native/preferred timing.. 1920x1080p at 60Hz (16:9)

Modeline............... "1920x1080" 148.500 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync

Standard timings supported

720 x 400p at 70Hz - IBM VGA

640 x 480p at 60Hz - IBM VGA

640 x 480p at 67Hz - Apple Mac II

640 x 480p at 72Hz - VESA

640 x 480p at 75Hz - VESA

800 x 600p at 56Hz - VESA

800 x 600p at 60Hz - VESA

800 x 600p at 72Hz - VESA

800 x 600p at 75Hz - VESA

832 x 624p at 75Hz - Apple Mac II

1024 x 768p at 60Hz - VESA

1024 x 768p at 70Hz - VESA

1024 x 768p at 75Hz - VESA

1280 x 1024p at 75Hz - VESA

1920 x 1080p at 60Hz - VESA STD

1680 x 1050p at 60Hz - VESA STD

1440 x 900p at 60Hz - VESA STD

1280 x 1024p at 60Hz - VESA STD

1280 x 960p at 60Hz - VESA STD

1280 x 720p at 60Hz - VESA STD

1152 x 864p at 75Hz - VESA STD

Report information

Date generated........... 8/20/2018

Software revision........ 2.90.0.1020

Data source.............. Real-time 0x1300

Operating system......... 10.0.10240.2

Raw data

00,FF,FF,FF,FF,FF,FF,00,04,69,C3,22,C6,31,02,00,26,1B,01,03,68,30,1B,78,2A,84,D5,A2,5A,52,A2,26,

0D,50,54,BF,EF,00,D1,C0,B3,00,95,00,81,80,81,40,81,C0,71,4F,01,01,02,3A,80,18,71,38,2D,40,58,2C,

45,00,DC,0C,11,00,00,1E,00,00,00,FF,00,48,39,4C,4D,54,46,31,34,33,38,31,34,0A,00,00,00,FD,00,32,

4B,18,53,11,00,0A,20,20,20,20,20,20,00,00,00,FC,00,41,53,55,53,20,56,50,32,32,38,0A,20,20,00,55

over 7 years ago

0 David (ASIC) Liu over 7 years ago

TI__Guru**** 181261 points

Niroshan

Please accept my friend request and I will send you the doc that can used to generate the necessary program for the color bar.

Thanks
David

0 Niroshan Karunaratne over 7 years ago in reply to David (ASIC) Liu

Prodigy 145 points

Hello David,

I have accepted ur friend request. Could you please send me the doc.

0 David (ASIC) Liu over 7 years ago in reply to Niroshan Karunaratne

TI__Guru**** 181261 points

Niroshan

I believe the issue has been resolved through our private communication. Please let me know if additional support is needed.

Thanks
David

0 Niroshan Karunaratne over 7 years ago in reply to David (ASIC) Liu

Prodigy 145 points

Yes David, Thank you very much for your help.

0 Niroshan Karunaratne over 7 years ago in reply to Niroshan Karunaratne

Prodigy 145 points

Hello David,

We are able to get the color bar on the eDP screen, however we are unable to get any signal from the DSI interface.

When we connect DSI source and eDP screen through the SN65DSI86 there is no output.

1. When we check the error flags in the register dumb (attached here with), occasionally we see different error flags set in 0xF0. (In the attached file 0xF0 = 3)

Could you please let me know what causes this error flags to be set and what steps we need to follow to correct them.

Fullscreen regDump.txt Download

==================================================================================================================================
DUMP|00	01	02	03	04	05	06	07	08	09	0A	0B	0C	0D	0E	0F
----------------------------------------------------------------------------------------------------------------------------------
0	|36	38	49	53	44	20	20	20	2	0	86	0	0	1	0	0	
10	|26	0	53	0	0	0	0	0	0	0	0	0	0	0	0	0	
20	|80	7	0	0	38	4	0	0	0	0	0	0	2C	0	0	0	
30	|5	80	0	0	94	0	24	0	58	0	4	0	0	0	0	0	
40	|1	0	0	0	80	0	98	8	65	4	C0	0	29	0	2C	0	
50	|5	80	80	7	38	4	20	0	40	E4	D	0	10	0	F0	0	
60	|A0	60	A4	0	0	0	0	0	0	0	0	0	0	0	0	0	
70	|0	0	0	0	0	1	2	1	80	81	0	0	0	0	0	0	
80	|0	0	0	0	0	0	0	0	0	1F	7C	F0	C1	7	1F	7C	
90	|F0	C1	7	20	80	0	1	4	1	0	0	0	0	0	0	0	
A0	|1	FF	FF	0	0	0	0	0	0	0	0	0	0	0	0	0	
B0	|4	78	AC	AC	8	6C	9C	9C	C	5C	5C	5C	C	C	C	C	
C0	|3F	3F	F	0	0	0	0	0	0	0	0	0	0	0	0	0	
D0	|0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	
E0	|0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	
F0	|3	0	0	0	1	2	0	0	1	0	0	0	0	0	0	0	
----------------------------------------------------------------------------------------------------------------------------------

2. When we checked DSI source files we noticed that they contain two dsi commands qcom,mdss-dsi-on-command and qcom,mdss-dsi-off-command which the mentioned to obtain from the DSI panel.

For the SN65DSI86 are these two commands required and if so how could we obtain them ?

qcom,mdss-dsi-on-command = [ 29 01 00 00 00 00 04 FF 80 09 01
+ 23 01 00 00 00 00 02 00 80
+ 29 01 00 00 00 00 03 FF 80 09
+ 23 01 00 00 00 00 02 00 00
+ 23 01 00 00 00 00 02 D8 87
+ 23 01 00 00 00 00 02 00 01
+ 23 01 00 00 00 00 02 D8 87
+ 23 01 00 00 00 00 02 00 B1
+ 23 01 00 00 00 00 02 C5 A9
+ 23 01 00 00 00 00 02 00 91
+ 23 01 00 00 00 00 02 C5 79
+ 23 01 00 00 00 00 02 00 00
+ 23 01 00 00 00 00 02 D9 45
+ 23 01 00 00 00 00 02 00 92
+ 23 01 00 00 00 00 02 C5 01
+ 23 01 00 00 00 00 02 00 A1
+ 23 01 00 00 00 00 02 C1 08
+ 23 01 00 00 00 00 02 00 81
+ 23 01 00 00 00 00 02 C1 66
+ 23 01 00 00 00 00 02 00 a3
+ 23 01 00 00 00 00 02 c0 1B
+ 23 01 00 00 00 00 02 00 82
+ 23 01 00 00 00 00 02 c5 83
+ 23 01 00 00 00 00 02 00 81
+ 23 01 00 00 00 00 02 c4 83
+ 23 01 00 00 00 00 02 00 90
+ 23 01 00 00 00 00 02 B3 02
+ 23 01 00 00 00 00 02 00 92
+ 23 01 00 00 00 00 02 B3 45
+ 23 01 00 00 00 00 02 00 a0
+ 23 01 00 00 00 00 02 c1 ea
+ 23 01 00 00 00 00 02 00 c0
+ 23 01 00 00 00 00 02 c5 00
+ 23 01 00 00 00 00 02 00 8b
+ 23 01 00 00 00 00 02 b0 40
+ 23 01 00 00 00 00 02 00 87
+ 29 01 00 00 00 00 04 C4 00 80 00
+ 23 01 00 00 00 00 02 00 B2
+ 29 01 00 00 00 00 05 F5 15 00 15 00
+ 23 01 00 00 00 00 02 00 93
+ 23 01 00 00 00 00 02 C5 03
+ 23 01 00 00 00 00 02 00 a7
+ 23 01 00 00 00 00 02 b3 01
+ 23 01 00 00 00 00 02 00 a6
+ 23 01 00 00 00 00 02 b3 2b
+ 23 01 00 00 00 00 02 00 90
+ 29 01 00 00 00 00 07 C0 00 4E 00 00 00 03
+ 23 01 00 00 00 00 02 00 a6
+ 29 01 00 00 00 00 04 C1 01 00 00
+ 23 01 00 00 00 00 02 00 00
+ 29 01 00 00 00 00 11 E1 05 0B 0F 0F 08 0D 0C 0B 02 06 16 12 18 24 17 00
+ 23 01 00 00 00 00 02 00 00
+ 29 01 00 00 00 00 11 E2 05 0B 0F 0F 08 0D 0C 0B 02 06 16 12 18 24 17 00
+ 23 01 00 00 00 00 02 00 91
+ 23 01 00 00 00 00 02 B3 00
+ 23 01 00 00 00 00 02 00 80
+ 29 01 00 00 00 00 0d CE 85 01 18 84 01 18 00 00 00 00 00 00
+ 23 01 00 00 00 00 02 00 90
+ 29 01 00 00 00 00 0f CE 13 56 18 13 57 18 00 00 00 00 00 00 00 00
+ 23 01 00 00 00 00 02 00 a0
+ 29 01 00 00 00 00 0f CE 18 0B 03 5E 00 18 00 18 0A 03 5F 00 18 00
+ 23 01 00 00 00 00 02 00 b0
+ 29 01 00 00 00 00 0f CE 18 0D 03 5C 00 18 00 18 0C 03 5D 00 18 00
+ 23 01 00 00 00 00 02 00 c0
+ 29 01 00 00 00 00 0f CE 38 0D 03 5E 00 10 07 38 0C 03 5F 00 10 07
+ 23 01 00 00 00 00 02 00 d0
+ 29 01 00 00 00 00 0f CE 38 09 03 5A 00 10 07 38 08 03 5B 00 10 07
+ 23 01 00 00 00 00 02 00 C7
+ 23 01 00 00 00 00 02 CF 04
+ 23 01 00 00 00 00 02 00 C9
+ 23 01 00 00 00 00 02 CF 00
+ 23 01 00 00 00 00 02 00 C0
+ 23 01 00 00 00 00 02 CB 14
+ 23 01 00 00 00 00 02 00 C2
+ 23 01 00 00 00 00 06 CB 14 14 14 14 14
+ 23 01 00 00 00 00 02 00 D5
+ 23 01 00 00 00 00 02 CB 14
+ 23 01 00 00 00 00 02 00 D7
+ 29 01 00 00 00 00 06 CB 14 14 14 14 14
+ 23 01 00 00 00 00 02 00 80
+ 23 01 00 00 00 00 02 CC 01
+ 23 01 00 00 00 00 02 00 82
+ 29 01 00 00 00 00 06 CC 0F 0D 0B 09 05
+ 23 01 00 00 00 00 02 00 9A
+ 23 01 00 00 00 00 02 CC 02
+ 23 01 00 00 00 00 02 00 9C
+ 29 01 00 00 00 00 04 CC 10 0E 0C
+ 23 01 00 00 00 00 02 00 A0
+ 23 01 00 00 00 00 02 CC 0A
+ 23 01 00 00 00 00 02 00 A1
+ 23 01 00 00 00 00 02 CC 06
+ 23 01 00 00 00 00 02 00 B0
+ 23 01 00 00 00 00 02 CC 01
+ 23 01 00 00 00 00 02 00 B2
+ 29 01 00 00 00 00 06 CC 0F 0D 0B 09 05
+ 23 01 00 00 00 00 02 00 CA
+ 23 01 00 00 00 00 02 CC 02
+ 23 01 00 00 00 00 02 00 CC
+ 29 01 00 00 00 00 04 CC 10 0E 0C
+ 23 01 00 00 00 00 02 00 D0
+ 23 01 00 00 00 00 02 CC 0A
+ 23 01 00 00 00 00 02 00 D1
+ 23 01 00 00 00 00 02 CC 06
+ 05 01 00 00 00 00 01 11
+ 05 01 00 00 00 00 01 29
+ ];
+
+
+
+
+
+ qcom,mdss-dsi-off-command = [05 01 00 00 78 00 02 28 00
+ 05 01 00 00 78 00 02 10 00
+ ];

hank you in advance.

0 David (ASIC) Liu over 7 years ago in reply to Niroshan Karunaratne

TI__Guru**** 181261 points

Niroshan

These are DSI commands, the DSI86 does not support these command mode. These commands would only be meaningful for a DSI panel, but not a DSI to eDP bridge such as DSI86. Control of a eDP panel must be done thru the AUX interface.

Thanks
David

0 Niroshan Karunaratne over 7 years ago in reply to David (ASIC) Liu

Prodigy 145 points

Thank you David,

So if the eDP and DSI interfaces are correctly configured (as in the example) data from the DSI stream should be displayed with out any additional configurations?
Could you let us know what could cause this not to work and what could be the possible causes for the 0xF0 error flags.

0 David (ASIC) Liu over 7 years ago in reply to Niroshan Karunaratne

TI__Guru**** 181261 points

Niroshan

In the spreadsheet I sent to you, you can choose between Color Bar and DSI, are you using the DSI to calculate the register setting?

The register dump shows 0xF0h to be 0x03b, 0xF6h to be 0x02b, these errors typically indicate signal integrity error. How around connect the DSI source to the DSI86 EVM?

Thanks
David

0 Niroshan Karunaratne over 7 years ago in reply to David (ASIC) Liu

Prodigy 145 points

Hello David,

We are connecting the DSI source to the SN65DSI86 using the following cable - JF08R0R051020MA 51 Position Flat Flex Cable Assembly Receptacle with Latch to Receptacle with Latch 7.87" (200.00mm) (please see attached image)

We also see some gray color bars on the top of the display. This visible only when the DSI source is connected.