[RK3288][Android5.1] 移植笔记 --- eDP显示屏添加

程序员文章站 2022-06-10 10:44:10

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Platform: RK3288
OS: Android 5.1

Kernel: 3.10.79

原理图屏相关部分:

[RK3288][Android5.1] 移植笔记 --- eDP显示屏添加

dts配置:

eDP的配置相当简单, 只要配置display-timing即可,另外,前面的LCD_EN引脚也要配置下.

背光灯控制：

	backlight {
		compatible = "pwm-backlight";
		pwms = <&pwm0 0 25000>;
			 
		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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113
			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>;
		enable-gpios = <&gpio7 GPIO_A2 GPIO_ACTIVE_HIGH>;
	};

EDP屏部分，GPIO7 A3 控制 LCD-EN

&fb {
	rockchip,disp-mode = <DUAL>;
	rockchip,uboot-logo-on = <0>;//值为 1 ;会黑屏
	rockchip,disp-policy = <DISPLAY_POLICY_SDK>;//SDK  //尤为重要的值，根据实际屏选择
};

&disp_timings {
	native-mode = <&timing0>;  //根据"lcd-F402.dtsi" 选择
};

&rk_screen {
    display-timings = <&disp_timings>;
};

/*lcdc0 as PRMRY(HDMI)*/
&lcdc0 {
        status = "okay";
        rockchip,iommu-enabled = <1>;
        rockchip,prop = <PRMRY>;
        power_ctr: power_ctr {
            rockchip,debug = <1>;

            lcd_en:lcd_en {
                rockchip,power_type = <GPIO>;
                gpios = <&gpio7 GPIO_A3 GPIO_ACTIVE_HIGH>;
                rockchip,delay = <10>;
            };
        };
};

&lcdc1 {
	status = "okay";
	rockchip,iommu-enabled = <1>;
	rockchip,prop = <EXTEND>;
};

在开头还要引入 #include "lcd-F402.dtsi"