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JerryChen

@whycan 晕哥请问可以帮忙指教下吗？感谢

JerryChen

@maihuanyi 还没有，最近忙，没太多时间玩

JerryChen

测试固件，上传备份下~~~

启动后，执行下面命令可亮屏：

lv_examples 0

tina_d1s-nezha_uart3.img

JerryChen

@soso90 在【分享】D1S新增一款MIPI屏[480*480] ST7701S 中说：

线

已邮件发给你了~~~不好意思，有段时间没上来了

JerryChen

之前买了两款屏，一款是480480 2Lane MIPI，点屏显示正常（此贴：D1S新增一款MIPI屏[480480] ST7701S）

这一款是720*720， 4Lane MIPI的，测试了较多参数，还是显示有点异常，看看各位友友有没有遇到类似的情况过，请各位帮忙支招，谢谢。

规格书：
YX40005A.pdf

驱动IC：ST7703
卖家给的时序参数：

测试现象：
1、按照参数，时钟lcd_dclk_freq配置为36M，黑屏无显示。
2、降频为16M测试，可以显示画面，但拖影比较严重，显示也不清晰。
3、调节各个HBP/HFP等参数，好像无好转的迹象。

硬件上面应该没有烧坏或者其它问题。

dts:

&lcd0 {
	lcd_used            = <1>;

        lcd_driver_name     = "st7701s";
	lcd_backlight       = <100>;
	lcd_if              = <4>;

        lcd_pwm_used        = <0>;
	lcd_pwm_ch          = <7>;
	lcd_pwm_freq        = <1000>;
	lcd_pwm_pol         = <0>;
	lcd_pwm_max_limit   = <255>;

        lcd_x               = <720>;
	lcd_y               = <720>;
	lcd_width           = <72>;
	lcd_height          = <72>;
	lcd_dclk_freq       = <20>;     // lcd_ht * lcd_vt * 60
        lcd_dsi_lane        = <4>;
        pinctrl-0           = <&dsi4lane_pins_a>;
	pinctrl-1           = <&dsi4lane_pins_b>;

        lcd_hbp             = <30>;     // hsync back porch(pixel) + hsync plus width(pixel);
	lcd_ht              = <790>;    // hsync total cycle(pixel)
	lcd_hspw            = <4>;      // hsync plus width(pixel)
	lcd_vbp             = <26>;     // vsync back porch(line) + vysnc plus width(line)
	lcd_vt              = <776>;    // vysnc total cycle(line)
	lcd_vspw            = <6>;      // vysnc plus width(pixel)

        lcd_dsi_if          = <0>;
	lcd_lvds_if         = <0>;
	lcd_lvds_colordepth = <0>;
	lcd_lvds_mode       = <0>;
	lcd_frm             = <0>;
	lcd_hv_clk_phase    = <0>;
	lcd_hv_sync_polarity= <0>;
	lcd_io_phase        = <0x0000>;
	lcd_gamma_en        = <0>;
	lcd_bright_curve_en = <0>;
	lcd_cmap_en         = <0>;
	lcd_fsync_en        = <0>;
	lcd_fsync_act_time  = <1000>;
	lcd_fsync_dis_time  = <1000>;
	lcd_fsync_pol       = <0>;

	deu_mode            = <0>;
	lcdgamma4iep        = <22>;
	smart_color         = <90>;

	lcd_gpio_0 =  <&pio PB 2 GPIO_ACTIVE_HIGH>;
};

初始化参数：

static struct LCM_setting_table lcm_initialization_setting[] = {
	// {0x11, 1, {0x00} },
	{REGFLAG_DELAY, 500, {} },

    {0xB9, 3, {0xF1, 0x12, 0x83}},

    {0xBA, 27, {0x33, 0x81, 0x05, 0xF9, 0x0E, 0x0E, 0x20, 0x00, 0x00, 0x00,
                0x00, 0x00, 0x00, 0x00, 0x44, 0x25, 0x00, 0x91, 0x0A, 0x00,
                0x00, 0x02, 0x4F, 0xD1, 0x00, 0x00, 0x37}},

    {0xB8, 4,  {0x25, 0x22, 0x20, 0x03}},

    {0xBF, 3,  {0x02, 0x11, 0x00}},

    // set rgb()
    // {0xB3, 10, {0x10, 0x10, 0x0A, 0x50, 0x03, 0xFF, 0x00, 0x00, 0x00, 0x00}},

    {0xC0, 9,  {0x73, 0x73, 0x50, 0x50, 0x00, 0x00, 0x08, 0x70, 0x00}},

    {0xBC, 1,  {0x46}},

    {0xCC, 1,  {0x0B}},

    {0xB4, 1,  {0x80}},

    {0xB2, 3,  {0x3C, 0x12, 0x30}},

    {0xE3, 14, {0x07, 0x07, 0x0B, 0x0B, 0x03, 0x0B, 0x00, 0x00, 0x00, 0x00, 
                0xFF, 0x00, 0x40, 0x10}},

    {0xC1, 12, {0x65, 0x00, 0x32, 0x32, 0x77, 0xF1, 0xCC, 0xCC, 0x77, 0x77, 
                0x33, 0x33}},

    {0xB5, 2,  {0x0A, 0x0A}},

    {0xB6, 2,  {0xB7, 0xB7}},

    {0xE9, 63, {0x88, 0x10, 0x0A, 0x10, 0x0F, 0xA1, 0x80, 0x12, 0x31, 0x23, 
                0x47, 0x86, 0xA1, 0x80, 0x47, 0x08, 0x04, 0x44, 0x00, 0x00, 
                0x00, 0x00, 0x04, 0x44, 0x00, 0x00, 0x00, 0x00, 0x75, 0x31, 
                0x88, 0x88, 0x88, 0x1F, 0x88, 0x38, 0xFF, 0x58, 0x88, 0x64, 
                0x20, 0x88, 0x88, 0x88, 0x0F, 0x88, 0x28, 0xFF, 0x48, 0x88, 
                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
                0x00, 0x00, 0x00}},

    {0xEA, 61, {0x00, 0x1A, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 
                0x00, 0x00, 0x02, 0x46, 0x88, 0x88, 0x88, 0x28, 0x8F, 0x08, 
                0xFF, 0x48, 0x88, 0x13, 0x57, 0x88, 0x88, 0x88, 0x38, 0x8F, 
                0x18, 0xFF, 0x58, 0x88, 0x23, 0x00, 0x00, 0x01, 0x02, 0x00, 
                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
                0x00, 0x00, 0x00, 0x00, 0x40, 0xA1, 0x80, 0x00, 0x00, 0x00, 
                0x00}},

    {0xE0, 34, {0x00, 0x03, 0x06, 0x2D, 0x3E, 0x3F, 0x34, 0x32, 0x08, 0x0C, 
                0x0D, 0x10, 0x12, 0x11, 0x12, 0x10, 0x15, 0x00, 0x03, 0x06, 
                0x2D, 0x3E, 0x3F, 0x34, 0x32, 0x08, 0x0C, 0x0D, 0x10, 0x12, 
                0x11, 0x12, 0x10, 0x15}},

    {0x11, 1, {0x00} },
	{REGFLAG_DELAY, 300, {} },

	{0x29, 1, {0x00} },
    {REGFLAG_DELAY, 100, {} },
	{REGFLAG_END_OF_TABLE, 0x00, {}}
};

附几张异常现象的照片：

JerryChen

@soso90 应该不画，也不会画（都忘记怎么画板了），就一块这个屏，买来玩玩的

JerryChen

@soso90 就1楼的代码片段2就是卖家给的，我只是把他转换为这个平台的格式了

JerryChen

第一次玩MIPI屏，还算比较顺利，有需要的可以参考：

分辨率：480x480
驱动IC：ST7701S
接--口：MIPI 2Lane
规格书：1960496392HX40007ACT 规格书.pdf

&lcd0 {
	lcd_used            = <1>;

        lcd_driver_name     = "st7701s";
	lcd_backlight       = <100>;
	lcd_if              = <4>;

        lcd_pwm_used        = <1>;
	lcd_pwm_ch          = <7>;
	lcd_pwm_freq        = <1000>;
	lcd_pwm_pol         = <0>;
	lcd_pwm_max_limit   = <255>;


        // 480*480
	lcd_x               = <480>;
	lcd_y               = <480>;
	lcd_width           = <72>;
	lcd_height          = <72>;
	lcd_dclk_freq       = <16>;     // lcd_ht * lcd_vt * 60
        lcd_dsi_lane        = <2>;
        pinctrl-0           = <&dsi2lane_pins_a>;
	pinctrl-1           = <&dsi2lane_pins_b>;

        lcd_hbp             = <30>;     // hsync back porch(pixel) + hsync plus width(pixel);
	lcd_ht              = <525>;    // hsync total cycle(pixel)
	lcd_hspw            = <25>;     // hsync plus width(pixel)
	lcd_vbp             = <20>;     // vsync back porch(line) + vysnc plus width(line)
	lcd_vt              = <525>;    // vysnc total cycle(line)
	lcd_vspw            = <8>;      // vysnc plus width(pixel)

        lcd_dsi_if          = <0>;
	lcd_lvds_if         = <0>;
	lcd_lvds_colordepth = <0>;
	lcd_lvds_mode       = <0>;
	lcd_frm             = <0>;
	lcd_hv_clk_phase    = <0>;
	lcd_hv_sync_polarity= <0>;
	lcd_io_phase        = <0x0000>;
	lcd_gamma_en        = <0>;
	lcd_bright_curve_en = <0>;
	lcd_cmap_en         = <0>;
	lcd_fsync_en        = <0>;
	lcd_fsync_act_time  = <1000>;
	lcd_fsync_dis_time  = <1000>;
	lcd_fsync_pol       = <0>;

	deu_mode            = <0>;
	lcdgamma4iep        = <22>;
	smart_color         = <90>;

	lcd_gpio_0 =  <&pio PB 2 GPIO_ACTIVE_HIGH>;
	
};

初始化代码：

static struct LCM_setting_table lcm_initialization_setting[] = {
	// {0x11, 1, {0x00} },
	{REGFLAG_DELAY, 60, {} },

	{0xff, 5, {0x77, 0x01, 0x00, 0x00, 0x10} },
	{0xc0, 2, {0x3b, 0x00} },
	{0xc1, 2, {0x0d, 0x02} },
	{0xc2, 2, {0x31, 0x05} },
	{0xcd, 1, {0x08} },

	{0xb0, 16, {0x00, 0x11, 0x18, 0x0e, 0x11, 0x06, 0x07, 0x08, 0x07, 0x22,
		   0x04, 0x12, 0x0f, 0xaa, 0x31, 0x18} },

	{0xb1, 16, {0x00, 0x11, 0x19, 0x0e, 0x12, 0x07, 0x08, 0x08, 0x08, 0x22,
		    0x04, 0x11, 0x11, 0xa9, 0x32, 0x18} },

	{0xff, 5, {0x77, 0x01, 0x00, 0x00, 0x11} },

	{0xb0, 1, {0x60} },
	{0xb1, 1, {0x32} },
	{0xb2, 1, {0x07} },
	{0xb3, 1, {0x80} },
	{0xb5, 1, {0x49} },
	{0xb7, 1, {0x85} },
	{0xb8, 1, {0x21} },
	// {0xb9, 1, {0x10} },
	{0xc1, 1, {0x78} },
	{0xc2, 1, {0x78} },
	{REGFLAG_DELAY, 50, {} },

        {0x21, 1, {0x00} },

	// {0xd0, 1, {0x88} },
	{0xe0, 3, {0x00, 0x1b, 0x02} },
	{0xe1, 11, {0x08, 0xa0, 0x00, 0x00, 0x07, 0xa0, 0x00, 0x00, 0x00, 0x44,
		    0x44} },
	{0xe2, 12, {0x11, 0x11, 0x44, 0x44, 0xed, 0xa0, 0x00, 0x00, 0xec, 0xa0,
		    0x00, 0x00} },
	{0xe3, 4, {0x00, 0x00, 0x11, 0x11} },
	{0xe4, 2, {0x44, 0x44} },
	{0xe5, 16, {0x0a, 0xe9, 0xd8, 0xa0, 0x0c, 0xeb, 0xd8, 0xa0, 0x0e, 0xed,
		    0xd8, 0xa0, 0x10, 0xef, 0xd8, 0xa0} },

	{0xe6, 4, {0x00, 0x00, 0x11, 0x11} },
	{0xe7, 2, {0x44, 0x44} },
	{0xe8, 16, {0x09, 0xe8, 0xd8, 0xa0, 0x0b, 0xea, 0xd8, 0xa0, 0x0d, 0xec,
		    0xd8, 0xa0, 0x0f, 0xee, 0xd8, 0xa0} },
	{0xeb, 7, {0x02, 0x00, 0xe4, 0xe4, 0x88, 0x00, 0x40} },

	{0xec, 2, {0x3c, 0x00} },
	{0xed, 16, {0xab, 0x89, 0x76, 0x54, 0x02, 0xff, 0xff, 0xff, 0xff, 0xff,
		    0xff, 0x20, 0x45, 0x67, 0x98, 0xba} },

        {0x36, 1, {0x00} },
	{0xff, 5, {0x77, 0x01, 0x00, 0x00, 0x13} },
        {0xe5, 1, {0xe4} },
        {0xff, 5, {0x77, 0x01, 0x00, 0x00, 0x00} },
        {0x3a, 2, {0x66, 0x21} },
	{REGFLAG_DELAY, 50, {} },

        {0x11, 1, {0x00} },
	{REGFLAG_DELAY, 120, {} },

	{0x29, 1, {0x00} },
	{REGFLAG_END_OF_TABLE, 0x00, {} }
};

还有一款720 x 720的4Lane MIPI屏还没调通

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