3568 lvds屏幕

lychee · 发表于 2021-6-19 11:21:54

想要在3568上面调试一个lvds的屏幕，但是查看源码下面，并没有关于lvds地址的描述啥的，这个如何下手啊，大神们帮忙解答一下，不胜感激！

lychee · 发表于 2021-6-19 11:24:08

观察了别的平台，设备树中都有关于lvds地址的使用，不知道3568做了哪些更改，竟然没找到

luwy · 发表于 2021-6-24 10:51:40

可以参考rk3566-firefly-aiojd4-lvds-HSX101H40C.dts,还有AIO-3568J没有lvds接口哦，只有edp，mipi以及hdmi

lychee · 发表于 2021-6-24 11:45:28

我看datasheet说mipi跟lvds接口共用，不可以的吗

，我找一下这个文件看看，谢谢啦

luwy · 发表于 2021-6-25 09:44:54

不好意思，dsi0 mipi dsi0和lvds是共用的，是支持lvds的，不过我们暂时还没在这块板上调过lvds屏，你要调的话可以参考3566的试试

零一 · 发表于 2021-6-25 12:49:45

我参考了rk3566-evb1-ddr4-v10-lvds.dts，没调通

zy66666 · 发表于 2022-10-5 15:53:09

零一发表于 2021-6-25 12:49
我参考了rk3566-evb1-ddr4-v10-lvds.dts，没调通

调的怎么样了，能不能分享一下经验

文学 · 发表于 2022-12-19 20:16:26

这是我之前点亮单lvds的dts，你可以参考一下：
/ {
      model = "Rockchip RK3568 EVB2 LP4X V10 Board";
      compatible = "rockchip,rk3568-evb2-lp4x-v10", "rockchip,rk3568";

      backlight1: backlight1 {
            compatible = "pwm-backlight";
            pwms = <&pwm13 0 25000 0>;
            enable-gpios = <&gpio3 RK_PA1 GPIO_ACTIVE_HIGH>;
            brightness-levels = <
                        0  20  20  21  21  22  22  23
                     23  24  24  25  25  26  26  27
                     27  28  28  29  29  30  30  31
                     31  32  32  33  33  34  34  35
                     35  36  36  37  37  38  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  99 100 101 102 103
                     104 105 106 107 108 109 110 111
                     112 113 114 115 116 117 118 119
                     120 121 122 123 124 125 126 127
                     128 129 130 131 132 133 134 135
                     136 137 138 139 140 141 142 143
                     144 145 146 147 148 149 150 151
                     152 153 154 155 156 157 158 159
                     160 161 162 163 164 165 166 167
                     168 169 170 171 172 173 174 175
                     176 177 178 179 180 181 182 183
                     184 185 186 187 188 189 190 191
                     192 193 194 195 196 197 198 199
                     200 201 202 203 204 205 206 207
                     208 209 210 211 212 213 214 215
                     216 217 218 219 220 221 222 223
                     224 225 226 227 228 229 230 231
                     232 233 234 235 236 237 238 239
                     240 241 242 243 244 245 246 247
                     248 249 250 251 252 253 254 255
            >;
            default-brightness-level = <200>;
      };

      panel {
            compatible = "simple-panel";
            backlight = <&backlight1>;
            power-supply = <&vcc3v3_lcd0_n>;
            enable-delay-ms = <20>;
            prepare-delay-ms = <20>;
            unprepare-delay-ms = <20>;
            disable-delay-ms = <20>;
            bus-format = <MEDIA_BUS_FMT_RBG888_1X24>;
            width-mm = <217>;
            height-mm = <136>;

            display-timings {
                     native-mode = <&timing1>;

                     timing0: timing0 {
                              clock-frequency = <51200000>;
                              hactive = <1024>;
                              vactive = <600>;

                              hfront-porch = <160>;
                              hsync-len = <2>;
                              hback-porch = <158>;

                              vfront-porch = <10>;
                              vsync-len = <2>;
                              vback-porch = <23>;

                              hsync-active = <1>;
                              vsync-active = <0>;
                              de-active = <0>;
                              pixelclk-active = <0>;
                     };

                     timing1: timing1 {
                              clock-frequency = <71000000>;
                              hactive = <1280>;
                              vactive = <800>;

                              hfront-porch = <48>;
                              hsync-len = <32>;
                              hback-porch = <80>;

                              vfront-porch = <3>;
                              vsync-len = <6>;
                              vback-porch = <14>;

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

            ports {
                     #address-cells = <1>;
                     #size-cells = <0>;

                     port@0 {
                              reg = <0>;

                              panel_in_lvds: endpoint {
                                    remote-endpoint = <&lvds_out_panel>;
                              };
                     };
            };
      };
};

&pwm13{
      pinctrl-0 = <&pwm13m1_pins>;
      status = "okay";
};

&vcc3v3_lcd0_n {
      gpio = <&gpio3 RK_PA2 GPIO_ACTIVE_HIGH>;
      status = "okay";
};

&lvds {
      status = "okay";

      ports {
            port@1 {
                     reg = <1>;

                     lvds_out_panel: endpoint {
                              remote-endpoint = <&panel_in_lvds>;
                     };
            };
      };
};

&lvds_in_vp1 {
      status = "okay";
};

&lvds_in_vp2 {
      status = "disabled";
};

&route_lvds {
      status = "okay";
      connect = <&vp1_out_lvds>;
};

goldbear · 发表于 2023-5-21 14:20:03

我是lvds和hdmi两个输出，按照这个参考修改后，现在发现只要打开&lvds_in_vp1 {
status = "okay"; hdmi也不输出，黑屏。黑屏了cat /sys/kernel/debug/dri/0/summary也是看不到任何消息，正常显示时这个日志是看得到的

wx__rC5xx5 · 发表于 2023-5-21 15:26:47

goldbear 发表于 2023-5-21 14:20
我是lvds和hdmi两个输出，按照这个参考修改后，现在发现只要打开&lvds_in_vp1 {
status = "okay"; ...

我跟你一样的问题你现在搞定了吗

[技术讨论] 3568 lvds屏幕

【技术讨论】 3568 lvds屏幕