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    T527 使用 DRM 驱动 edp 屏幕

    T527系列-工业车载
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    • A
      awwwwa LV 7 最后由 awwwwa 编辑

      进入 menuconfig 勾选 drm 驱动

      ./build.sh menuconfig

      先勾选 DRM

      cb61de74-4427-4634-ad9a-7fb0355f0c2c-image.png

      再勾选 DRM 驱动

      d5bfe0b4-9c31-4685-9f5a-edf9a314ecc8-image.png

      选择驱动的phy

      cd43edeb-294c-4e54-bca2-02fcd83870d6-image.png

      选择屏幕

      3296da2b-cc7e-4440-9379-c538a52c59e1-image.png

      选择 general 屏幕面板驱动

      c6048ab0-44cc-4889-a0b4-8c6ef4d76cb3-image.png

      关闭原来的 disp2 fbdev 驱动

      f8db1009-4b34-4d8e-839d-3c7a358126d6-image.png

      配置设备树

      	edp_panel_backlight: edp_backlight {
		compatible = "pwm-backlight";
		status = "okay";
		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 = <&pio PI 5 GPIO_ACTIVE_HIGH>;
		/* power-supply = <&reg_backlight_12v>; */
		pwms = <&a_pwm 5 5000000 0>;
	};

	edp_panel: edp_panel {
		compatible = "edp-general-panel";
		status = "okay";
		power0-supply = <&reg_dcdc4>;

		backlight = <&edp_panel_backlight>;

		panel-timing {
			clock-frequency = <348577920>; /* pixel clock */
			hactive = <2560>;
			hback-porch = <120>;
			hfront-porch = <88>;
			hsync-len = <32>;
			vactive = <1600>;
			vback-porch = <71>;
			vfront-porch = <28>;
			vsync-len = <5>;
			/* hor_sync_polarity */
			hsync-active = <1>;
			/* ver_sync_polarity */
			vsync-active = <1>;

			// unused now
			/*
			de-active = <1>;
			pixelclk-active = <1>;
			syncclk-active = <0>;
			interlaced;
			doublescan;
			doubleclk;
			*/
		};
		ports {
			#address-cells = <1>;
			#size-cells = <0>;
			panel_in: port@0 {
				#address-cells = <1>;
				#size-cells = <0>;
				reg = <0>;
				edp_panel_in: endpoint@0 {
					reg = <0>;
					remote-endpoint = <&edp_panel_out>;
				};
			};
		};
	};

      和 drm_edp 的配置

      &drm_edp {
	status = "okay";

	edp_ssc_en = <0>;
	edp_ssc_mode = <0>;
	edp_psr_support = <0>;
	edp_colordepth = <8>; /* 6/8/10/12/16 */
	edp_color_fmt = <0>; /* 0:RGB  1: YUV444  2: YUV422 */

	lane1_sw = <0>;
	lane1_pre = <0>;
	lane2_sw = <0>;
	lane2_pre = <0>;
	lane3_sw = <0>;
	lane3_pre = <0>;
	efficient_training = <0>;

	sink_capacity_prefer = <1>;
	edid_timings_prefer = <1>;
	timings_fixed = <1>;

	vcc-edp-supply = <&reg_bldo3>;
	vdd-edp-supply = <&reg_dcdc2>;
	panel = <&edp_panel>;
	ports {
		edp_out: port@1 {
			edp_panel_out: endpoint@0 {
				reg = <0>;
				remote-endpoint = <&edp_panel_in>;
			};
		};
	};
};
      1 条回复 最后回复 回复 引用 分享 0
      • J
        jameschen LV 2 最后由 编辑

        @awwwwa 哪里可以找到T527的评估板呢？项目要做但找不到板

        1 条回复 最后回复 回复 引用 分享 0
        • A
          awwwwa LV 7 最后由 编辑

          DSI

          	dsi1_backlight: backlight0 {
		compatible = "pwm-backlight";
		status = "okay";
		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 = <&pio PH 18 GPIO_ACTIVE_HIGH>;
		pwms = <&pwm0 0 50000 0>;
	};

&de {
	chn_cfg_mode = <3>;
	status = "okay";
};

&vo0 {
	status = "okay";
};

&dlcd1 {
	status = "okay";
};

&dsi1 {
	status = "okay";
	pinctrl-0 = <&dsi1_4lane_pins_a>;
	pinctrl-1 = <&dsi1_4lane_pins_b>;
	pinctrl-names = "active","sleep";
	ports {
		dsi1_out: port@1{
			reg = <1>;
			dsi_out_panel: endpoint {
				remote-endpoint = <&panel_in>;
			};
		};
        };
	panel: panel@0 {
		compatible = "panel-dsi";
		status = "okay";
		reg = <0>;
		power0-supply = <&reg_cldo4>;
		power1-supply = <&reg_cldo1>;

		reset-gpios = <&pio PD 22 GPIO_ACTIVE_HIGH>; //reset
		backlight = <&dsi1_backlight>;
		dsi,flags = <MIPI_DSI_MODE_VIDEO>;
		dsi,lanes = <4>;
		dsi,format = <0>;
		panel-init-sequence = [
			15 00 02 E0 00
			15 00 02 E1 93
			15 00 02 E2 65
			15 00 02 E3 F8
			15 00 02 80 03
			15 00 02 E0 01
			15 00 02 00 00
			15 00 02 01 25
			15 00 02 03 00
			15 00 02 04 30
			15 00 02 0C 74
			15 00 02 17 00
			15 00 02 18 C7
			15 00 02 19 01
			15 00 02 1A 00
			15 00 02 1B C7
			15 00 02 1C 01
			15 00 02 24 FE
			15 00 02 37 19
			15 00 02 35 28
			15 00 02 38 05
			15 00 02 39 08
			15 00 02 3A 12
			15 00 02 3C 7E
			15 00 02 3D FF
			15 00 02 3E FF
			15 00 02 3F 7F
			15 00 02 40 06
			15 00 02 41 A0
			15 00 02 43 1E
			15 00 02 44 0B
			15 00 02 55 02
			15 00 02 57 6A
			15 00 02 59 0A
			15 00 02 5A 2E
			15 00 02 5B 1A
			15 00 02 5C 15
			15 00 02 5D 7F
			15 00 02 5E 61
			15 00 02 5F 50
			15 00 02 60 43
			15 00 02 61 3F
			15 00 02 62 32
			15 00 02 63 35
			15 00 02 64 1F
			15 00 02 65 38
			15 00 02 66 36
			15 00 02 67 36
			15 00 02 68 54
			15 00 02 69 42
			15 00 02 6A 48
			15 00 02 6B 39
			15 00 02 6C 34
			15 00 02 6D 26
			15 00 02 6E 14
			15 00 02 6F 02
			15 00 02 70 7F
			15 00 02 71 61
			15 00 02 72 50
			15 00 02 73 43
			15 00 02 74 3F
			15 00 02 75 32
			15 00 02 76 35
			15 00 02 77 1F
			15 00 02 78 38
			15 00 02 79 36
			15 00 02 7A 36
			15 00 02 7B 54
			15 00 02 7C 42
			15 00 02 7D 48
			15 00 02 7E 39
			15 00 02 7F 34
			15 00 02 80 26
			15 00 02 81 14
			15 00 02 82 02
			15 00 02 E0 02
			15 00 02 00 52
			15 00 02 01 5F
			15 00 02 02 5F
			15 00 02 03 50
			15 00 02 04 77
			15 00 02 05 57
			15 00 02 06 5F
			15 00 02 07 4E
			15 00 02 08 4C
			15 00 02 09 5F
			15 00 02 0A 4A
			15 00 02 0B 48
			15 00 02 0C 5F
			15 00 02 0D 46
			15 00 02 0E 44
			15 00 02 0F 40
			15 00 02 10 5F
			15 00 02 11 5F
			15 00 02 12 5F
			15 00 02 13 5F
			15 00 02 14 5F
			15 00 02 15 5F
			15 00 02 16 53
			15 00 02 17 5F
			15 00 02 18 5F
			15 00 02 19 51
			15 00 02 1A 77
			15 00 02 1B 57
			15 00 02 1C 5F
			15 00 02 1D 4F
			15 00 02 1E 4D
			15 00 02 1F 5F
			15 00 02 20 4B
			15 00 02 21 49
			15 00 02 22 5F
			15 00 02 23 47
			15 00 02 24 45
			15 00 02 25 41
			15 00 02 26 5F
			15 00 02 27 5F
			15 00 02 28 5F
			15 00 02 29 5F
			15 00 02 2A 5F
			15 00 02 2B 5F
			15 00 02 2C 13
			15 00 02 2D 1F
			15 00 02 2E 1F
			15 00 02 2F 01
			15 00 02 30 17
			15 00 02 31 17
			15 00 02 32 1F
			15 00 02 33 0D
			15 00 02 34 0F
			15 00 02 35 1F
			15 00 02 36 05
			15 00 02 37 07
			15 00 02 38 1F
			15 00 02 39 09
			15 00 02 3A 0B
			15 00 02 3B 11
			15 00 02 3C 1F
			15 00 02 3D 1F
			15 00 02 3E 1F
			15 00 02 3F 1F
			15 00 02 40 1F
			15 00 02 41 1F
			15 00 02 42 12
			15 00 02 43 1F
			15 00 02 44 1F
			15 00 02 45 00
			15 00 02 46 17
			15 00 02 47 17
			15 00 02 48 1F
			15 00 02 49 0C
			15 00 02 4A 0E
			15 00 02 4B 1F
			15 00 02 4C 04
			15 00 02 4D 06
			15 00 02 4E 1F
			15 00 02 4F 08
			15 00 02 50 0A
			15 00 02 51 10
			15 00 02 52 1F
			15 00 02 53 1F
			15 00 02 54 1F
			15 00 02 55 1F
			15 00 02 56 1F
			15 00 02 57 1F
			15 00 02 58 40
			15 00 02 5B 10
			15 00 02 5C 06
			15 00 02 5D 40
			15 00 02 5E 00
			15 00 02 5F 00
			15 00 02 60 40
			15 00 02 61 03
			15 00 02 62 04
			15 00 02 63 6C
			15 00 02 64 6C
			15 00 02 65 75
			15 00 02 66 08
			15 00 02 67 B4
			15 00 02 68 08
			15 00 02 69 6C
			15 00 02 6A 6C
			15 00 02 6B 0C
			15 00 02 6D 00
			15 00 02 6E 00
			15 00 02 6F 88
			15 00 02 75 BB
			15 00 02 76 00
			15 00 02 77 05
			15 00 02 78 2A
			15 00 02 E0 04
			15 00 02 37 58
			15 00 02 00 0E
			15 00 02 02 B3
			15 00 02 09 61
			15 00 02 0E 48
			15 00 02 E0 00
			05 32 01 11
			05 05 01 29
			15 32 02 35 00
		];

		panel-exit-sequence = [
			05 14 01 28
			05 50 01 10
		];

		display-timings {
			native-mode = <&dsi1_timing0>;

			dsi1_timing0: timing0 {
				clock-frequency = <68215200>;
				hback-porch = <20>;
				hactive = <800>;
				hfront-porch = <20>;
				hsync-len = <20>;
				vback-porch = <8>;
				vactive = <1280>;
				vfront-porch = <30>;
				vsync-len = <4>;

			};
		};
		port {
			panel_in: endpoint {
                                remote-endpoint = <&dsi_out_panel>;
                        };
		};
	};
};

&dsi0combophy {
	status = "disabled";
};

&dsi1combophy {
	status = "okay";
};
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