mstar屏参配置调试说明
【屏类型结构体定义PanelType】 文档位置：《apiPNL.h》
/// A panel struct type used to specify the panel attributes, and settings from Board layout
typedef struct
{
const char *m_pPanelName; ///< PanelName 屏的名称
//
// Panel output
//
MS_U8 m_bPanelDither :1; ///< PANEL_DITHER, keep the setting
//Sub BK VOP_36(不同芯片，此值可能不一样)，bPanelDither=1->0x2D05，bPanelDither=0->0x2D00
APIPNL_LINK_TYPE m_ePanelLinkType :4; ///< PANEL_LINK
//Sub BK VOP_44(不同芯片，此值可能不一样)，LVDS=0x11，RSDS=0x00
///////////////////////////////////////////////
// Board related setting
///////////////////////////////////////////////
MS_U8 m_bPanelDualPort :1; ///< VOP_21[8], MOD_4A[1], PANEL_DUAL_PORT, refer to m_bPanelDoubleClk
MS_U8 m_bPanelSwapPort :1; ///< MOD_4A[0], PANEL_SWAP_PORT, refer to "LVDS output app note" A/B channel swap
MS_U8 m_bPanelSwapOdd_ML :1; ///< PANEL_SWAP_ODD_ML
//蒙上灰
MS_U8 m_bPanelSwapEven_ML :1; ///< PANEL_SWAP_EVEN_ML
//蒙上灰
MS_U8 m_bPanelSwapOdd_RB :1; ///< PANEL_SWAP_ODD_RB
//缺色
MS_U8 m_bPanelSwapEven_RB :1; ///< PANEL_SWAP_EVEN_RB
//缺色
MS_U8 m_bPanelSwapLVDS_POL :1; ///< MOD_40[5], PANEL_SWAP_LVDS_POL, for differential P/N swap
//正负极性切换
MS_U8 m_bPanelSwapLVDS_CH :1; ///< MOD_40[6], PANEL_SWAP_LVDS_CH, for pair swap
//双通道切换
MS_U8 m_bPanelPDP10BIT :1; ///< MOD_40[3], PANEL_PDP_10BIT ,for pair swap
MS_U8 m_bPanelLVDS_TI_MODE :1; ///< MOD_40[2], PANEL_LVDS_TI_MODE, refer to "LVDS output app note"
//说明当前的屏是不是TI mode
///////////////////////////////////////////////
// For TTL Only
///////////////////////////////////////////////
MS_U8 m_ucPanelDCLKDelay; ///< PANEL_DCLK_DELAY
MS_U8 m_bPanelInvDCLK :1; ///< MOD_4A[4], PANEL_INV_DCLK
MS_U8 m_bPanelInvDE :1; ///< MOD_4A[2], PANEL_INV_DE
MS_U8 m_bPanelInvHSync :1; ///< MOD_4A[12], PANEL_INV_HSYNC
MS_U8 m_bPanelInvVSync :1; ///< MOD_4A[3], PANEL_INV_VSYNC
///////////////////////////////////////////////
// Output driving current setting
///////////////////////////////////////////////
// driving current setting (0x00=4mA, 0x01=6mA, 0x02=8mA, 0x03=12mA)
MS_U8 m_ucPanelDCKLCurrent; ///< define PANEL_DCLK_CURRENT
//Sub VOP_？？[6:7](不同芯片，此值可能不一样)，
MS_U8 m_ucPanelDECurrent; ///< define PANEL_DE_CURRENT
//Sub VOP_？？[4:5](不同芯片，此值可能不一样)，
MS_U8 m_ucPanelODDDataCurrent; ///< define PANEL_ODD_DATA_CURRENT
//Sub VOP_？？[2:3](不同芯片，此值可能不一样)，
MS_U8 m_ucPanelEvenDataCurrent; ///< define PANEL_EVEN_DATA_CURRENT
//Sub VOP_？？[0:1](不同芯片，此值可能不一样)，
///////////////////////////////////////////////
// panel on/off timing
///////////////////////////////////////////////
MS_U16 m_wPanelOnTiming1; ///< time between panel & data while turn on power
MS_U16 m_wPanelOnTiming2; ///< time between data & back light while turn on power
MS_U16 m_wPanelOffTiming1; ///< time between back light & data while turn off power
MS_U16 m_wPanelOffTiming2; ///< time between data & panel while turn off power
///////////////////////////////////////////////
// panel timing spec.
///////////////////////////////////////////////
// sync related
MS_U8 m_ucPanelHSyncWidth; ///< VOP_01[7:0], PANEL_HSYNC_WIDTH
MS_U8 m_ucPanelHSyncBackPorch; ///< PANEL_HSYNC_BACK_PORCH, no register setting, provide value for query only,
///< not support Manuel VSync Start/End now
///< VOP_02[10:0] VSync start = Vtt - VBackPorch - VSyncWidth
///< VOP_03[10:0] VSync end = Vtt - VBackPorch
MS_U8 m_ucPanelVSyncWidth; ///< define PANEL_VSYNC_WIDTH
MS_U8 m_ucPanelVBackPorch; ///< define PANEL_VSYNC_BACK_PORCH
// DE related
MS_U16 m_wPanelHStart; ///< VOP_04[11:0], PANEL_HSTART, DE H Start (PANEL_HSYNC_WIDTH + PANEL_HSYNC_BACK_PORCH)
MS_U16 m_wPanelVStart; ///< VOP_06[11:0], PANEL_VSTART, DE V Start
MS_U16 m_wPanelWidth; ///< PANEL_WIDTH, DE width (VOP_05[11:0] = HEnd = HStart + Width - 1)
MS_U16 m_wPanelHeight; ///< PANEL_HEIGHT, DE height (VOP_07[11:0], = Vend = VStart + Height - 1)
// DClk related
MS_U16 m_wPanelMaxHTotal; ///< PANEL_MAX_HTOTAL. Reserved for future using.
MS_U16 m_wPanelHTotal; ///< VOP_0C[11:0], PANEL_HTOTAL
MS_U16 m_wPanelMinHTotal; ///< PANEL_MIN_HTOTAL. Reserved for future using.
MS_U16 m_wPanelMaxVTotal; ///< PANEL_MAX_VTOTAL. Reserved for future using.
MS_U16 m_wPanelVTotal; ///< VOP_0D[11:0], PANEL_VTOTAL
MS_U16 m_wPanelMinVTotal; ///< PANEL_MIN_VTOTAL. Reserved for future using.
MS_U8 m_dwPanelMaxDCLK; ///< PANEL_MAX_DCLK. Reserved for future using.
MS_U8 m_dwPanelDCLK; ///< LPLL_0F[23:0], PANEL_DCLK ,{0x3100_10[7:0], 0x3100_0F[15:0]}
MS_U8 m_dwPanelMinDCLK; ///< PANEL_MIN_DCLK. Reserved for future using.
///< spread spectrum
MS_U16 m_wSpreadSpectrumStep; ///< move to board define, no use now.
MS_U16 m_wSpreadSpectrumSpan; ///< move to board define, no use now.
MS_U8 m_ucDimmingCtl; ///< Initial Dimming Value
MS_U8 m_ucMaxPWMVal; ///< Max Dimming Value
MS_U8 m_ucMinPWMVal; ///< Min Dimming Value
MS_U8 m_bPanelDeinterMode :1; ///< define PANEL_DEINTER_MODE, no use now
E_PNL_ASPECT_RATIO m_ucPanelAspectRatio; ///< Panel Aspect Ratio, provide information to upper layer application for aspect ratio setting.
/*
*
* Board related params
*
* If a board ( like BD_MST064C_D01A_S ) swap LVDS TX polarity
* : This polarity swap value =
* (LVDS_PN_SWAP_H<<8) | LVDS_PN_SWAP_L from board define,
* Otherwise
* : The value shall set to 0.
*/
MS_U16 m_u16LVDSTxSwapValue;
APIPNL_TIBITMODE m_ucTiBitMode; ///< MOD_4B[1:0], refer to "LVDS output app note" 当颜色不对的时候，就可以调整这个设定来试验
APIPNL_OUTPUTFORMAT_BITMODE m_ucOutputFormatBitMode; //Define panel output format bit mode.The default value is 10bit,because 8bit panel can use 10bit config and 8bit config.But 10bit panel(like PDP panel) can only use 10bit config.And some PDA panel is 6bit.
MS_U8 m_bPanelSwapOdd_RG :1; ///< define PANEL_SWAP_ODD_RG
MS_U8 m_bPanelSwapEven_RG :1; ///< define PANEL_SWAP_EVEN_RG
MS_U8 m_bPanelSwapOdd_GB :1; ///< define PANEL_SWAP_ODD_GB
MS_U8 m_bPanelSwapEven_GB :1; ///< define PANEL_SWAP_EVEN_GB
//Sub MOD_??[2:5]，Odd_RG:bit3，Odd_GB:bit2，Even_RG:bit5，Even_GB:bit4
/**
* Others
*/
MS_U8 m_bPanelDoubleClk :1; ///< LPLL_03[7], define Double Clock ,LVDS dual mode
MS_U32 m_dwPanelMaxSET; ///< define PANEL_MAX_SET
MS_U32 m_dwPanelMinSET; ///< define PANEL_MIN_SET
//这个值会限定FPLL LOCK的范围，也就是LPLL_D5D6D7
//1.reg_frame_lpll_en:LPLL_18[3]=0
//2.reg_lpll_set调整：手动调整SET(BK31_1E,1F,20)值，观察OSD是否异常找出Max/Min SET,写入代码需要除2.
APIPNL_OUT_TIMING_MODE m_ucOutTimingMode; ///<Define which panel output timing change mode is used to change VFreq for same panel 目前有三种选择:E_PNL_CHG_DCLK, E_PNL_CHG_HTOTAL, E_PNL_CHG_VTOTAL, 后面两者都是为了保持DCLK不变而修改HTOTAL/VTOTAL.
MS_U8 m_bPanelNoiseDith :1; ///< PAFRC mixed with noise dither disable
} PanelType;
【名词解释】
Port swap:
只用在dual port (FHD在板子上有两组LVDS)，将两个LVDS互换
Channel swap:
一个LVDS里面有很多channel,
6bit: CH0 CH1 CH2 CLK
8bit: CH0 CH1 CH2 CLK CH3
10bit: CH0 CH1 CH2 CLK CH3 CH4
以8bit为例，Channel swap enable后会有以下行为：
CH0 <-> CH3、CH1 <-> CLK、CH2 <-> CH2 ，就是水平交换
Polarity swap:
每个Channel 都有 Even(P)、Odd(M) 两个极性，Polarity swap就是将每个channel里的两个极性交换。以8bit为例：
CH0P <-> CH0M，CH1P <-> CH1M，CH2P <-> CH2M，CLKP <-> CLKM，CH3P <-> CH3M
【配置介绍】 文档位置：《Panel.c》或者table_panel.c文件中
(1) 屏的接口类型设置
如果屏的接口类型为LVDS，则相关代码如下：
LINK_LVDS, //BOOL m_ePanelLinkType :2; //PANEL_LINK
(2) 屏接口数据线的位数设置
如果屏的接口数据线为8位双口，则相关代码如下：
1, //BOOL m_bPanelDither :1; //PANEL_DITHER // 8/6 bits panel [0:6 1:8 bits panel]
1, //BOOL m_bPanelDualPort :1; //PANEL_DUAL_PORT 0 // [0:单口 1:双口]
寄存器地址：MOD_4A[1]（0x3200的94的第1bit）
(3) 屏的尺寸设置（宽度x高度）
如果屏的尺寸为1024X768，则相关代码如下：
1024, //WORD m_wPanelWidth; //PANEL_WIDTH
768, //WORD m_wPanelHeight; //PANEL_HEIGHT
(4) 用于定义屏的高低（MSB/LSM）位奇偶特性交换；
0, //BOOL m_bPanelSwapOdd_ML :1; //PANEL_SWAP_ODD_ML
0, //BOOL m_bPanelSwapEven_ML :1; //PANEL_SWAP_EVEN_ML
(5) 用于定义屏的红蓝奇偶特性交换
0, //BOOL m_bPanelSwapOdd_RB :1; //PANEL_SWAP_ODD_RB
0, //BOOL m_bPanelSwapEven_RB :1; //PANEL_SWAP_EVEN_RB
(6) 交换位选择（A，B口交换）
0, // swap port
如果此屏为单口,则这个值一定要置1,双口就无所谓,0或1都可以,不影响.对应寄存器（0x3200的94的第0bit）
(7) TI_MODE反就改这两个
1, //BOOL m_bPanelLVDS_TI_MODE :1; //PANEL_LVDS_TI_MODE
对应寄存器（PANEL_LVDS_TI_MODE：MOD_40[2]即0x3200的80的第2bit；）
(8)
TI_8BIT_MODE, //8bit ti bit mode 屏的位数选择，8位，10位，6位，选择对应的即可
8bit ti bit mode： 0x3200的96的第0、1bit，
0,1bit空位10bit屏
0空，1有是8bit屏
0有，1有是10bit屏
(9) 定义影像行方向和场方向的起始位置
104+24, //WORD m_wPanelHStart; //PANEL_HSTART (PANEL_HSYNC_WIDTH + PANEL_HSYNC_BACK_PORCH)
3+6, //WORD m_wPanelVStart; //PANEL_VSTART (PANEL_VSYNC_WIDTH + PANEL_VSYNC_BACK_PORCH)
(HSTART参照寄存器sub_bank=10, 102F08) PANEL_HSTART=((U16)PANEL_HSYNC_WIDTH+PANEL_HSYNC_BACK_PORCH)
(VSTART参照寄存器sub_bank=10, 102F0C) PANEL_VSTART=((U16)PANEL_VSYNC_WIDTH + PANEL_VSYNC_BACK_PORCH)
(10) 此值相当于HSTART和VSTART,有时候屏未满屏就可以改动此值.
24, //BYTE m_ucPanelHSyncBackPorch; //PANEL_HSYNC_BACK_PORCH
6, //BYTE m_ucPanelBackPorch; //PANEL_VSYNC_BACK_PORCH
(11) HTOTAL：单位时间行扫描的次数
2048, //WORD m_wPanelMaxHTotal; //PANEL_MAX_HTOTAL
1344, //WORD m_wPanelHTotal; //PANEL_HTOTAL
1054, //WORD m_wPanelMinHTotal; //PANEL_MIN_HTOTAL
此值非常关键，常影响屏的显示效果，如上下缺线、白屏、闪动、VGA某些模式拉丝、OSD底部显示缺边等都可以调它)
(HTOTAL参照寄存器sub_bank=10, 102F18, 102F19)
(12) VTOTAL：单位时间列扫描的次数
1024, //WORD m_wPanelMaxVTotal; //PANEL_MAX_VTOTAL
806, //WORD m_wPanelVTotal; //PANEL_VTOTAL
776, //WORD m_wPanelMinVTotal; //PANEL_MIN_VTOTAL
（VTOTAL参照寄存器sub_bank=10, 102F1A, 102F1B）
(13)
81, //DWORD m_dwPanelMaxDCLK; //PANEL_MAX_DCLK
65, //DWORD m_dwPanelDCLK; //PANEL_DCLK
50, //DWORD m_dwPanelMinDCLK; //PANEL_MIN_DCLK
无信号时，显示不正确，一般调整这里可以解决,还有当PC是好的,其他信号源的台标显示不正常闪动,就可以改动此值.
PANEL_DCLK= (((U32)PANEL_HTOTAL*PANEL_VTOTAL*60)/1000000)
Bank 1031的20 寄存器显示的值不是计算出来的,也不清楚中间算法,但可以微调看DCLK的值调大或者减小后哪种效果合适,再来调整DCLK的值
(14) 定义同步信号的行宽、列高
104, //BYTE m_ucPanelHSyncWidth; //PANEL_HSYNC_WIDTH
3, //BYTE m_ucPanelVSyncWidth; //PANEL_VSYNC_WIDTH
PANEL_HSYNC_WIDTH和PANEL_VSYNC_WIDTH有时候图象只显示了一半,就可以调这两个,V方向和H方向.
(15) 屏的时钟和极性
0x00, //BYTE m_ucPanelDCLKDelay; //PANEL_DCLK_DELAY
0, //BOOL m_bPanelInvDCLK :1; //PANEL_INV_DCLK
0, //BOOL m_bPanelInvDE :1; //PANEL_INV_DE
0, //BOOL m_bPanelInvHSync :1; //PANEL_INV_HSYNC
0, //BOOL m_bPanelInvVSync :1; //PANEL_INV_VSYNC
这些是屏的时钟和极性 ,比如有些屏某些位置会出现那种雪花点或躁点,你就可以试着调这里.
(16) 屏的上电/下电时序
30, //BYTE m_ucPanelOnTiming1; //PANEL_ON_TIMING1 // time between panel & data while turn on power
500, //BYTE m_ucPanelOnTiming2; //PANEL_ON_TIMING2 // time between data & back light while turn on power
150, //BYTE m_ucPanelOffTiming1; //PANEL_OFF_TIMING1 // time between back light & data while turn off power
30, //BYTE m_ucPanelOffTiming2; //PANEL_OFF_TIMING2 // time between data & panel while turn off power
当时序不匹配的时候可能出现上/下电白屏
(17) 屏的电流
// driving current setting (0x00=4mA, 0x01=6mA, 0x02=8mA, 0x03=12mA)
0x01, //BYTE m_ucPanelDCKLCurrent; //PANEL_DCLK_CURRENT // DCLK current
0x01, //BYTE m_ucPanelDECurrent; //PANEL_DE_CURRENT // DE signal current
0x01, //BYTE m_ucPanelODDDataCurrent;//PANEL_ODD_DATA_CURRENT//odd data current
0x01, //BYTEm_ucPanelEvenDataCurrent;//PANEL_EVEN_DATA_CURRENT//evendata current
有些屏需要的电流要大,你就可以在这里修改
(18)
MS_U32 m_dwPanelMaxSET; ///< define PANEL_MAX_SET
MS_U32 m_dwPanelMinSET; ///< define PANEL_MIN_SET
SET=216*5242888*8/(7*DCLK)
注意DCLK的值要设置为单组的DCLK的值，即如果是双位屏，要除以2
(19) 调节三星屏的时候以及6BIT屏有时要用到
OUTPUT_10BIT_MODE, //10bit ti bit mode
这个调节三星屏的时候以及6BIT屏有时要用到 具体寄存器为：0x3200的92的bit6,bit7
(20) 选择屏的clock数
1, // double clock
如果是双位屏要设置为1，单位屏选0，否则屏会显示不正常,0x3100的06
附录：MSTAR系列寄存器值
小结:
1.配置屏参的时候,大多数情况下都会在现有的屏参的基础上来配置,复制现有的屏参,然后对照要配置的屏的规格书来填写参数.
2.一般常用的一些参数有 HTOTAL,VTOTAL,m_wPanelMaxVTotal,m_wPanelMinVTotal,m_wPanelMaxHTotalVTotal,m_wPanelMinVTotal,这几个参数都是决定
PANEL_DCLK的(有的屏规格书是明确给出了这个参数值,有的没有则需要通过公式计算,计算公式上文有提到)
3.另外还有一个比较重要的参数就是PLL值,
MS_U32 m_dwPanelMaxSET; ///< define PANEL_MAX_SET
MS_U32 m_dwPanelMinSET; ///< define PANEL_MIN_SET
常见的滚屏闪屏现象大多数与这两个值的设置有关,计算公式如上,因为每个屏的灵敏度不一样,因此值不一定需要是计算出来的值
4. SWAP_PORT设置,经常有不同的SWAP口不一样,这一项在屏规格书里面很少有体现,但是如果配置错了的话,很可能屏点不起来,是黑屏状态;
1^PANEL_CONNECTOR_SWAP_PORT, // shall swap if
因此如果检查了屏的背光和分辨率,IO配置没问题的话,此时屏还是黑屏状态,第一时间要想一下是不是SWAP_PORT影响的.
转载说明:此文章是在原创基础上添加了一些备注,
原文链接:https://www.cnblogs.com/jamiechen/p/4186005.html
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