LCD Initialization Commands in official firmware

kgb2008

Both M6SP and M6SL support more than one LCD driver ICs, here's what i found at the firmware version 2004.6, hope someone can identify the missing part num of unknown driver.

M6SL

[S6D0139]

Display Init
-------------------------------------
LCD_SetReg(7, 0);
LCD_SetReg(0x13, 0);
delay
LCD_SetReg(0x11, 0x3304);
LCD_SetReg(0x14, 0x1300);
LCD_SetReg(0x10, 0x1a20);
LCD_SetReg(0x13, 0x40);
delay
LCD_SetReg(0x13, 0x60);
LCD_SetReg(0x13, 0x70);
delay
LCD_SetReg(1, 0x127);
LCD_SetReg(2, 0x700);
LCD_SetReg(3, 0x1030);
LCD_SetReg(8, 0x208);
LCD_SetReg(11, 0x620);
LCD_SetReg(12, 0x110);
LCD_SetReg(0x30, 0x120);
LCD_SetReg(0x31, 0x117);
LCD_SetReg(0x32, 0);
LCD_SetReg(0x33, 0x305);
LCD_SetReg(0x34, 0x717);
LCD_SetReg(0x35, 0x124);
LCD_SetReg(0x36, 0x706);
LCD_SetReg(0x37, 0x503);
LCD_SetReg(0x38, 0x1f03);
LCD_SetReg(0x39, 9);
LCD_SetReg(0x40, 0);
LCD_SetReg(0x41, 0);
LCD_SetReg(0x42, 0x13f);
LCD_SetReg(0x43, 0);
LCD_SetReg(0x44, 0x13f);
LCD_SetReg(0x45, 0);
LCD_SetReg(0x46, 0xef00);
LCD_SetReg(0x47, 0x13f);
LCD_SetReg(0x48, 0);
LCD_SetReg(7, 0x15);
delay
LCD_SetReg(7, 0x17);
LCD_SetReg(0x20, 0);
LCD_SetReg(0x21, 0);
LCD_SetReg(0x22, 0);

Display Off
-------------------------------------
LCD_SetReg(7, 0x16);
delay
LCD_SetReg(7, 4);
delay
LCD_SetReg(0x10, 0x1e21);
delay

Display On
-------------------------------------
LCD_SetReg(0, 1);
delay
LCD_SetReg(0x10, 0);
delay
LCD_SetReg(0x11, 0x3304);
LCD_SetReg(0x14, 0x1300);
LCD_SetReg(0x10, 0x1a20);
LCD_SetReg(7, 0x15);
delay
LCD_SetReg(7, 0x17);
LCD_SetReg(0x20, 0);
LCD_SetReg(0x21, 0);
LCD_SetReg(0x22, 0);

kgb2008

M6SL

[S6D0154]

Display Init
-------------------------------------
LCD_SetReg(12, 0x130);
LCD_SetReg(0x80, 0x8d);
LCD_SetReg(0x92, 0x10);
LCD_SetReg(0x11, 0x1b);
LCD_SetReg(0x12, 0x3101);
LCD_SetReg(0x13, 0x105f);
LCD_SetReg(0x14, 0x667f);
LCD_SetReg(0x10, 0x800);
delay
LCD_SetReg(0x11, 0x11b);
delay
LCD_SetReg(0x11, 0x31b);
delay
LCD_SetReg(0x11, 0x71b);
delay
LCD_SetReg(0x11, 0xf1b);
delay
LCD_SetReg(0x11, 0xf3b);
delay
LCD_SetReg(1, 0x2128);
LCD_SetReg(2, 0x100);
LCD_SetReg(3, 0x1030);
LCD_SetReg(7, 0);
LCD_SetReg(8, 0x808);
LCD_SetReg(11, 0x1100);
LCD_SetReg(15, 0xf01);
LCD_SetReg(0x15, 0);
LCD_SetReg(0x30, 0);
LCD_SetReg(0x34, 0x13f);
LCD_SetReg(0x35, 0);
LCD_SetReg(0x36, 0xef);
LCD_SetReg(0x37, 0);
LCD_SetReg(0x38, 0x13f);
LCD_SetReg(0x39, 0);
LCD_SetReg(0x50, 0);
LCD_SetReg(0x51, 0xf00);
LCD_SetReg(0x52, 0xa03);
LCD_SetReg(0x53, 0x300);
LCD_SetReg(0x54, 0xc05);
LCD_SetReg(0x55, 0xf00);
LCD_SetReg(0x56, 0xf00);
LCD_SetReg(0x57, 3);
LCD_SetReg(0x58, 0x1f07);
LCD_SetReg(0x59, 0x71f);


Display Off
-------------------------------------
LCD_SetReg(7, 0x12);
delay
LCD_SetReg(7, 0);
delay


Display On
-------------------------------------
Display_Init
LCD_SetReg(7, 0x12);
delay
LCD_SetReg(7, 0x13);

kgb2008

M6SL

[Unknown Driver IC]

Display Init
-------------------------------------
LCD_SetReg(1, 0x2b3f);
LCD_SetReg(2, 0x300);
LCD_SetReg(3, 0x6e6a);
LCD_SetReg(11, 0xd408);
LCD_SetReg(12, 2);
LCD_SetReg(13, 11);
LCD_SetReg(14, 0x3000);
LCD_SetReg(15, 0);
LCD_SetReg(0x10, 0xd4);
LCD_SetReg(0x15, 4);
LCD_SetReg(0x16, 0xef08);
LCD_SetReg(0x17, 7);
LCD_SetReg(0x1e, 0xb3);
LCD_SetReg(0x30, 0);
LCD_SetReg(0x31, 0x604);
LCD_SetReg(0x32, 7);
LCD_SetReg(0x33, 0x500);
LCD_SetReg(0x34, 7);
LCD_SetReg(0x35, 0x301);
LCD_SetReg(0x36, 0x707);
LCD_SetReg(0x37, 5);
LCD_SetReg(0x3a, 4);
LCD_SetReg(0x3b, 4);



Display Off
-------------------------------------
LCD_SetReg(0x28, 6);
LCD_SetReg(0x2d, 0x3f66);
delay



Display On
-------------------------------------
LCD_SetReg(0x28, 6);
LCD_SetReg(0x2d, 0x3f60);
delay
LCD_SetReg(0x28, 6);

kgb2008

M3

[Unknown Driver IC]

Display Init
-------------------------------------
LCD_SetReg(0xa4, 1);
delay
LCD_SetReg(1, 0x100);
LCD_SetReg(2, 0x300);
LCD_SetReg(3, 0x9230);
LCD_SetReg(8, 0x404);
LCD_SetReg(14, 0x10);
LCD_SetReg(0x70, 0x1000);
LCD_SetReg(0x71, 1);
LCD_SetReg(0x30, 2);
LCD_SetReg(0x31, 0x400);
LCD_SetReg(0x32, 7);
LCD_SetReg(0x33, 0x500);
LCD_SetReg(0x34, 7);
LCD_SetReg(0x35, 0x703);
LCD_SetReg(0x36, 0x507);
LCD_SetReg(0x37, 5);
LCD_SetReg(0x38, 0x1404);
LCD_SetReg(0x39, 14);
LCD_SetReg(0x40, 0x202);
LCD_SetReg(0x41, 3);
LCD_SetReg(0x42, 0);
LCD_SetReg(0x43, 0x200);
LCD_SetReg(0x44, 0x707);
LCD_SetReg(0x45, 0x407);
LCD_SetReg(0x46, 0x505);
LCD_SetReg(0x47, 2);
LCD_SetReg(0x48, 4);
LCD_SetReg(0x49, 4);
LCD_SetReg(0x60, 0x202);
LCD_SetReg(0x61, 3);
LCD_SetReg(0x62, 0);
LCD_SetReg(0x63, 0x200);
LCD_SetReg(0x64, 0x707);
LCD_SetReg(0x65, 0x407);
LCD_SetReg(0x66, 0x505);
LCD_SetReg(0x67, 2);
LCD_SetReg(0x68, 4);
LCD_SetReg(0x69, 4);
LCD_SetReg(7, 1);
LCD_SetReg(0x18, 1);
LCD_SetReg(0x10, 0x1690);
LCD_SetReg(0x11, 0x100);
LCD_SetReg(0x12, 0x117);
LCD_SetReg(0x13, 0xf80);
LCD_SetReg(0x12, 0x137);
LCD_SetReg(0x20, 0);
LCD_SetReg(0x21, 0);
LCD_SetReg(0x50, 0);
LCD_SetReg(0x51, 0xaf);
LCD_SetReg(0x52, 0);
LCD_SetReg(0x53, 0x83);
LCD_SetReg(0x90, 0);
LCD_SetReg(0x91, 0);
LCD_SetReg(0x92, 0);
LCD_SetReg(0x98, 0);
LCD_SetReg(0x99, 0x903);
LCD_SetReg(0x9a, 0x502);
LCD_SetReg(0x9b, 0x300);
delay


Display Off
-------------------------------------
LCD_SetReg(7, 0x21);
LCD_SetReg(0x12, 0x0137);
delay
LCD_SetReg(7, 0x21);
LCD_SetReg(0x12, 0x1137);
delay


Display On
-------------------------------------
LCD_SetReg(7, 0x232);
LCD_SetReg(0x12, 0x1137);
delay
LCD_SetReg(7, 0x201);
LCD_SetReg(0x12, 0x0137);
delay
LCD_SetReg(7, 0x201);
delay
LCD_SetReg(0x10, 0x680);
LCD_SetReg(0x11, 0x160);
LCD_SetReg(0x12, 0x127);
delay
LCD_SetReg(0x10, 0x600);

kgb2008

M6TP

[Unknown Driver IC]

Display Init
-------------------------------------
LCD_SetReg(3,1);
LCD_SetReg(0x3A,1);
LCD_SetReg(0x32,2);
LCD_SetReg(0x33,0);
LCD_SetReg(0x37,0);
LCD_SetReg(0x77,0x0FFF);
LCD_SetReg(0x72,1);
LCD_SetReg(0x1C,0x1A5C);
LCD_SetReg(0x52,0x21);
LCD_SetReg(0x53,0x11);
LCD_SetReg(0x24,0x61);
LCD_SetReg(0x25,0x61);
LCD_SetReg(0x26,0);
LCD_SetReg(0x27,0);
LCD_SetReg(0x61,0x26);
LCD_SetReg(0x62,8);
LCD_SetReg(0x63,0x15);
LCD_SetReg(0x64,0x16);
LCD_SetReg(0x65,0xC);
LCD_SetReg(0x66,0x24);
LCD_SetReg(0x4D,0x0205);
LCD_SetReg(0x4E,1);
LCD_SetReg(0x4F,0x104);
LCD_SetReg(0x2E,0x32);
LCD_SetReg(0x3E,0x88);
LCD_SetReg(0x70,0x20);
LCD_SetReg(0x29,0);
LCD_SetReg(0x2A,0);
LCD_SetReg(0x2B,0xEF);
LCD_SetReg(0x2C,0x013F);
LCD_SetReg(8,0);
LCD_SetReg(9,0xEF);
LCD_SetReg(0x0A,0);
LCD_SetReg(0x0B,0x013F);
LCD_SetReg(1,0);
LCD_SetReg(5,4);
LCD_SetReg(6,0);
LCD_SetReg(7,0);
LCD_SetReg(2,0x46);
LCD_SetReg(0x3C,0);
LCD_SetReg(0x3D,0x013F);
delay
LCD_SetReg(0x1E,0x21);
LCD_SetReg(0x3B,1);
LCD_SetReg(0,8);


Display Off
-------------------------------------
LCD_SetReg(0,8);


Display On
-------------------------------------
LCD_SetReg(0.0);
delay
LCD_SetReg(0,0);

kgb2008

M6SP

[S6D0139]

Display Init
-------------------------------------
LCD_SetReg(7,0);
LCD_SetReg(0x13,0);
delay
0x11,0x3304
LCD_SetReg(7, 0);
LCD_SetReg(0x13, 0);
delay
LCD_SetReg(0x11, 0x3304);
LCD_SetReg(0x14, 0x1300);
LCD_SetReg(0x10, 0x1a20);
LCD_SetReg(0x13, 0x40);
delay
LCD_SetReg(0x13, 0x60);
LCD_SetReg(0x13, 0x70);
delay
LCD_SetReg(1, 0x127);
LCD_SetReg(2, 0x700);
LCD_SetReg(3, 0x1030);
LCD_SetReg(8, 0x208);
LCD_SetReg(11, 0x620);
LCD_SetReg(12, 0x110);
LCD_SetReg(0x30, 0x120);
LCD_SetReg(0x31, 0x117);
LCD_SetReg(0x32, 0);
LCD_SetReg(0x33, 0x305);
LCD_SetReg(0x34, 0x717);
LCD_SetReg(0x35, 0x124);
LCD_SetReg(0x36, 0x706);
LCD_SetReg(0x37, 0x503);
LCD_SetReg(0x38, 0x1f03);
LCD_SetReg(0x39, 9);
LCD_SetReg(0x40, 0);
LCD_SetReg(0x41, 0);
LCD_SetReg(0x42, 0x13f);
LCD_SetReg(0x43, 0);
LCD_SetReg(0x44, 0x13f);
LCD_SetReg(0x45, 0);
LCD_SetReg(0x46, 0xef00);
LCD_SetReg(0x47, 0x13f);
LCD_SetReg(0x48, 0);
LCD_SetReg(7, 0x15);
delay
LCD_SetReg(7, 0x17);
LCD_SetReg(0x20, 0);
LCD_SetReg(0x21, 0);
LCD_SetReg(0x22, 0);


Display Off
-------------------------------------
LCD_SetReg(7, 0x16,);
delay
LCD_SetReg(7, 4);
delay
LCD_SetReg(0x10, 0x1e21);
delay


Display On
-------------------------------------
LCD_SetReg(0, 1)
delay
LCD_SetReg(0x10, 0);
delay
LCD_SetReg(0x11, 0x3304);
LCD_SetReg(0x14, 0x1300);
LCD_SetReg(0x10, 0x1a20);
LCD_SetReg(7, 0x15);
delay
LCD_SetReg(7, 0x17);
LCD_SetReg(0x20, 0);
LCD_SetReg(0x21, 0);
LCD_SetReg(0x22, 0);

kgb2008

M6SP

[Unknown Driver IC]

Display Init
-------------------------------------
LCD_SetReg(7, 0);
LCD_SetReg(0x12, 0);
delay
LCD_SetReg(0x11, 12);
LCD_SetReg(0x12, 0xa1c);
LCD_SetReg(0x13, 0x22);
LCD_SetReg(0x14, 0);
LCD_SetReg(0x10, 0x7404);
LCD_SetReg(0x11, 0x738);
LCD_SetReg(0x10, 0x7404);
delay
LCD_SetReg(7, 9);
LCD_SetReg(0x12, 0x65c);
delay
LCD_SetReg(1, 0xe127);
LCD_SetReg(2, 0x300);
LCD_SetReg(3, 0x1100);
LCD_SetReg(8, 8);
LCD_SetReg(11, 0);
LCD_SetReg(12, 0);
LCD_SetReg(13, 7);
LCD_SetReg(0x15, 3);
LCD_SetReg(0x16, 0x14);
LCD_SetReg(0x17, 0);
LCD_SetReg(0x30, 0x503);
LCD_SetReg(0x31, 0x303);
LCD_SetReg(0x32, 0x305);
LCD_SetReg(0x33, 0x202);
LCD_SetReg(0x34, 0x204);
LCD_SetReg(0x35, 0x404);
LCD_SetReg(0x36, 0x402);
LCD_SetReg(0x37, 0x202);
LCD_SetReg(0x38, 0x1000);
LCD_SetReg(0x39, 0x1000);
LCD_SetReg(7, 9);
delay
LCD_SetReg(7, 0x109);
delay
LCD_SetReg(7, 0x10b);


Display Off
-------------------------------------
LCD_SetReg(11, 0);
LCD_SetReg(7, 0x109);
delay
LCD_SetReg(7, 8);
delay
LCD_SetReg(0x10, 0x400);
LCD_SetReg(0x10, 0x401);
delay


Display On
-------------------------------------
LCD_SetReg(0x10, 0x400);
delay
LCD_SetReg(7, 0);
LCD_SetReg(0x12, 0);
delay
LCD_SetReg(0x11, 12);
LCD_SetReg(0x12, 0xa1c);
LCD_SetReg(0x13, 0x22);
LCD_SetReg(0x14, 0);
LCD_SetReg(0x10, 0x7404);
LCD_SetReg(0x11, 0x738);
LCD_SetReg(0x10, 0x7404);
delay
LCD_SetReg(7, 9);
LCD_SetReg(0x12, 0x65c);
delay
LCD_SetReg(11, 0);
LCD_SetReg(7, 9);
delay
LCD_SetReg(7, 0x109);
delay
LCD_SetReg(7, 0x10b);

wpyh

Hi, I'm not familiar with this, but I know that there are at least two different initialization sequences for the M3.

My M3 once had an LCD problem and was sent back for repairs. They changed my LCD panel for a new one, and now I could only use firmware version 2.004, not 2.003 or 2.001. So there must be some difference in the old and new panels.

Pytak

Isn't that a iPod nano display in the M3? (just a guess)

dbmajster

I think it is, but i'm not sure (i've read about it but i don't remember where).

kgb2008

Meizu often change their components in the same model, it's announced that the Philips audio codec of M3 will be replaced with Wolfson 8987 from next week. So the new firmware must be smart enough to detect the chip.

audiofish

Say, how did you figure out these? Do you have access to the official source code or did you just do a fair amount of decompilation?

adamL

i think the answer is here

wpyh

Where did you get this info?

kgb2008

Meizu chinese official support forum
¼´ÈÕÆðгö³§µÄM3½«ÒôƵоƬ¸ü»»ÎªWolfson8987[÷È×åÂÛ̳]

In fact, this change is right there at the Feb.25 firmware upgrade, the UDA1380 occupies the i2c address 0x30 and WM8987 use 0x34, when the audio task is start, the code will try to set the analog volume register of UDA1380 and read it back, if unmatch, it will switch to WM8987 function set.

markun

I don't think we ever needed to put so much runtime detection in any of our rockbox targets before...

But I guess it's better than having many different firmwares and people needing to know which hardware they have exactly.

nice2know_u

Wow, great news! So I guess the M3's sound quality will reach the M6SL's :P

wpyh

Wow! I frequent that site but didn't notice his particular thread...

By the way, do you speak Chinese then?

wpyh

nice2know_u: Is the M6SL sound quality better than the M3? I don't have an M6SL, only an M3 and M6. How does the M6SL compare to the M6?

nice2know_u

I think the M6SL has the best sound quality of all meizu players (no hissing whatsoever). However I only had an M6SP before...
Here's a comparison thread