米尔MYC-C8MMX & MYD-C8MMX 驱动1920x1080 LCD？

SmartIC · 发表于 2020-4-1 14:10:41

核心板：MYC-C8MMX
开发板：MYD-C8MMX
液晶面板：ST2151B01-1
使用官方给的dtb下的：myb-fsl-imx8mm-st2151b0.dtb
屏幕点不亮。
使用官方给的：myb-fsl-imx8mm-me190etn01.dtb 驱动AUO M190ET屏幕就OK。
上述两个评率都是双8 LVDS，说明硬件对外输出没有问题。
莫非该开发板双8 LVDS跑不了1900*1080分辨率？
如果不是硬件问题，如何修改呢？看了MIPI 、桥接芯片和屏幕的手册，貌似没有啥问题。
多谢！

以下是st2151 对应dts：
/*
* Copyright 2019 MYiR Devices
*/
/{
lvds_backlight0: lvds_backlight@0 {
compatible = "pwm-backlight";
pwms = <&pwm1 0 5000000 >;
pinctrl-0 = <&pinctrl_lvds0_pwm1>;
enable-gpios = <&gpio1 8 GPIO_ACTIVE_HIGH>;
brightness-levels = < 0  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 96 97 98 99
      100>;
default-brightness-level = <80>;
};
};

&lcdif{
max-res = <1920>, <1080>;
};

&mipi_dsi{
panel@0 {
compatible = "toshiba,panel-tc358775";
reg = <0>;

panel-width-mm = <1920>;
panel-height-mm = <1080>;

toshiba,debug = <1>;
toshiba,ppi_tx_rx_ta = <0x000A000C>;
toshiba,ppi_lptxtimecnt = <0x00000008>;
toshiba,ppi_d0s_clrsipocount = <0x0000000D>;
toshiba,ppi_d1s_clrsipocount = <0x0000000D>;
toshiba,ppi_d2s_clrsipocount = <0x0000000D>;
toshiba,ppi_d3s_clrsipocount = <0x0000000D>;
toshiba,ppi_laneenable = <0x0000001f>;
toshiba,dsi_laneenable = <0x0000001f>;
toshiba,ppi_sartppi = <0x00000001>;
toshiba,dsi_sartppi = <0x00000001>;

toshiba,vpctrl = <0x03F00100>;
toshiba,htim1 = <0x00550006>;
toshiba,htim2 = <0x00780780>;
toshiba,vtim1 = <0x00280008>;
toshiba,vtim2 = <0x005a0438>;
toshiba,vfuen = <0x00000001>;
toshiba,lvphy0 = <0x00448006>;
toshiba,lvphy0_1 = <0x00048006>;
toshiba,sysrst = <0x00000004>;

toshiba,lvmx0003 = <0x03020100>;
toshiba,lvmx0407 = <0x08050704>;
toshiba,lvmx0811 = <0x0f0e0a09>;
toshiba,lvmx1215 = <0x100d0c0b>;
toshiba,lvmx1619 = <0x12111716>;
toshiba,lvmx2023 = <0x1b151413>;
toshiba,lvmx2427 = <0x061a1918>;
toshiba,lvcfg = <0x00000433>;

backlight = <&lvds_backlight0>;
client-device  = <&tc358775>;

display-timings {
native-mode = <&timing0>;
timing0:timing0{
clock-frequency = <148500000>;

hsync-len = <6>;
hfront-porch = <120>;
hactive = <1920>;
hback-porch = <85>;

vsync-len = <8>;
vfront-porch = <80>;
vactive = <1079>;
vback-porch = <41>;

vsync-active = <0>;
hsync-active =<0>;
de-active =<0>;
pixelclk-active =<0>;
};
};

};

};

&iomuxc {
imx8mm-evk {
pinctrl_lvds0_pwm1: lvds0pwm1grp {
fsl,pins = <
MX8MM_IOMUXC_GPIO1_IO08_GPIO1_IO8 0x19

>;
};
pinctrl_pwm1: lvds0pwm1grp {
fsl,pins = <
MX8MM_IOMUXC_GPIO1_IO01_PWM1_OUT 0x19
>;
};

};

};

&pwm1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pwm1>;
status = "okay";
};

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SmartIC · 发表于 2020-4-1 14:11:27

再贴一个AUO 19” 1280x1024 双八dts，这个可以正常工作。
/{
lvds_backlight0: lvds_backlight@0 {
compatible = "pwm-backlight";
pwms = <&pwm1 0 5000000 >;
enable-gpios = <&gpio1 8 GPIO_ACTIVE_HIGH>;
brightness-levels = < 0  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 96 97 98 99
      100>;
default-brightness-level = <80>;
};
};

&lcdif{
status = "okay";
max-res = <1280>, <1024>;
};

&mipi_dsi{
panel@0 {
compatible = "toshiba,panel-tc358775";
reg = <0>;
pinctrl-0 = <&pinctrl_mipi_dsi_en>;
stby-gpio = <&gpio4 27 GPIO_ACTIVE_HIGH>;
reset-gpio = <&gpio1 13 GPIO_ACTIVE_HIGH>;
dsi-lanes = <4>;
panel-width-mm = <396>;
panel-height-mm = <324>;

toshiba,debug = <1>;
toshiba,ppi_tx_rx_ta = <0x00050006>;
toshiba,ppi_lptxtimecnt = <0x00000004>;
toshiba,ppi_d0s_clrsipocount = <0x00000006>;
toshiba,ppi_d1s_clrsipocount = <0x00000006>;
toshiba,ppi_d2s_clrsipocount = <0x00000006>;
toshiba,ppi_d3s_clrsipocount = <0x00000006>;
toshiba,ppi_laneenable = <0x0000001f>;
toshiba,dsi_laneenable = <0x0000001f>;
toshiba,ppi_sartppi = <0x00000001>;
toshiba,dsi_sartppi = <0x00000001>;

toshiba,vpctrl = <0x03F00100>;
toshiba,htim1 = <0x00A00020>;
toshiba,htim2 = <0x00300500>;
toshiba,vtim1 = <0x001E0007>;
toshiba,vtim2 = <0x00030400>;
toshiba,vfuen = <0x00000001>;
toshiba,lvphy0 = <0x0044802D>;
toshiba,lvphy0_1 = <0x0004802D>;
toshiba,sysrst = <0x00000004>;

toshiba,lvmx0003 = <0x03020100>;
toshiba,lvmx0407 = <0x08050704>;
toshiba,lvmx0811 = <0x0f0e0a09>;
toshiba,lvmx1215 = <0x100d0c0b>;
toshiba,lvmx1619 = <0x12111716>;
toshiba,lvmx2023 = <0x1b151413>;
toshiba,lvmx2427 = <0x061a1918>;

toshiba,lvcfg = <0x00000433>;

backlight = <&lvds_backlight0>;
client-device  = <&tc358775>;

display-timings {
native-mode = <&timing0>;
timing0:timing0{
clock-frequency = <91000000>;

hsync-len = <32>;
hfront-porch = <48>;
hactive = <1280>;
hback-porch = <160>;

vsync-len = <7>;
vfront-porch = <3>;
vactive = <1024>;
vback-porch = <30>;

vsync-active = <0>;
hsync-active =<0>;
de-active =<0>;
pixelclk-active =<0>;
};
};
};

};
&iomuxc {
   imx8mm-evk {
      pinctrl_pwm1: lvds0pwm1grp {
         fsl,pins = <
            MX8MM_IOMUXC_GPIO1_IO01_PWM1_OUT 0x19
         >;
         };
};
};

&pwm1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pwm1>;
status = "okay";
};

dianyu99 · 发表于 2020-4-7 21:11:09

可以看到fb节点吗？

[求助] 米尔MYC-C8MMX & MYD-C8MMX 驱动1920x1080 LCD？

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