A527的EDP屏调试

最新推荐文章于 2025-05-14 15:24:23 发布

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EDP屏调试修改

1.修改了uboot和内核的设备树，添加edp0的配置

&edp0 {
    // use if hardware reset pin is need
    /* edp_hw_reset_pin = <&pio PH XX GPIO_ACTIVE_LOW>; */

    lcd_index            = <0>;
    lcd_bl_index        = <1>;
    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 */

    lane0_sw = <0>;
    lane0_pre = <0>;
    lane1_sw = <0>;
    lane1_pre = <0>;
    lane2_sw = <0>;
    lane2_pre = <0>;
    lane3_sw = <0>;
    lane3_pre = <0>;
    edp_lane_cnt = <2>;
    edp_lane_rate = <1>;//5.4G
    efficient_training = <0>;
    //edp_sramble_seed = <1>;
    //edp_training_func = <1>;

    sink_capacity_prefer = <1>;
    edid_timings_prefer = <1>;
    timings_fixed = <1>;
    
    /* timings config */
    edp_timings_type = <1>;
    /*edp_x = <1920>;
    edp_ht = <2270>;
    edp_hspw = <44>;
    edp_hbp = <148>;
    edp_hfp = <88>;
    edp_y = <1080>;
    edp_vt = <1150>;
    edp_vspw = <5>;
    edp_vbp = <36>;
    edp_vfp = <4>;*/
    
    edp_x = <1920>;
    edp_ht = <2132>;
    edp_hspw = <32>;
    edp_hbp = <132>;
    edp_hfp = <48>;
    edp_y = <1080>;
    edp_vt = <1125>;
    edp_vspw = <6>;
    edp_vbp = <36>;
    edp_vfp = <3>;
    //sink_capacity_prefer=<1>;
    
    edp_hpolar = <1>;
    edp_vpolar = <1>;
    edp_fps = <60>;

    edp_panel_used = <1>;
    edp_panel_driver = "general_panel";
    edp_bl_en       = <&pio PI 3 1 0 3 1>;//???????,??????? YNH-818-V1.1.PDF  LCD1-BL-EN
    //edp_gpio_panel_reset = <&pio PL 2 1 0 3 1>;
    //edp_gpio_1 = <&pio PL 2 1 0 3 1>;
    edp_pwm_used = <1>;
    edp_pwm_ch = <5>;
    edp_pwm_freq = <50000>;
    edp_pwm_pol = <1>;
    edp_default_backlight = <200>;
    edp_panel_power_0 = "edp-panel";

    vcc-edp-supply = <&reg_bldo3>;
    vdd-edp-supply = <&reg_dcdc2>;
    edp_training_param_type=<1>;
    status = "okay";
};

如果配置为单屏，内核的lcd0/1/2的设备树需要去掉，不然会出现系统内核会跑崩

2.同时要修改安卓这边的代码，不然到了开机动画不会显示

diff --git a/a527-pro2/display/config.mk b/a527-pro2/display/config.mk
index a408c83..54c1960 100644
--- a/a527-pro2/display/config.mk
+++ b/a527-pro2/display/config.mk
@@ -1,6 +1,9 @@
 PRODUCT_SPECIAL_DISPLAYCONFIG := true
 LOCAL_MODULE_PATH := $(shell dirname $(lastword $(MAKEFILE_LIST)))
 
+DISPLAY_HOTPLUG_SUPPORT := true
+$(call soong_config_add,vendor,hotplugSupport,$(DISPLAY_HOTPLUG_SUPPORT))
+
 ifeq ($(PRODUCT_SPECIAL_DISPLAYCONFIG),true)
 PRODUCT_COPY_FILES += $(call find-copy-subdir-files,*,$(LOCAL_MODULE_PATH)/dispconfigs,$(TARGET_COPY_OUT_VENDOR)/etc/dispconfigs)
 endif
diff --git a/a527-pro2/display/dispconfigs/a527-pro2.json b/a527-pro2/display/dispconfigs/a527-pro2.json
index 6068b3f..f42bdd6 100644
--- a/a527-pro2/display/dispconfigs/a527-pro2.json
+++ b/a527-pro2/display/dispconfigs/a527-pro2.json
@@ -1,17 +1,17 @@
 {
     "DisplayEngineVersion": 2,
-    "DisplayNumber": 3, /*Display0, Display1, Display2 */
+    "DisplayNumber": 1, /*Display0, Display1, Display2 */
 
     "PrimaryDisplay": ["Display0"],
-    "ExternalDisplay": ["Display1", "Display2"],
+    "ExternalDisplay": ["Display1"],
 
     "Display0": {
         /* Available interface type: LCD/HDMI/CVBS */
-        "InterfaceType": "LCD",
+        "InterfaceType": "EDP",
         "DisplayEnginePortId": 0,
         "OverrideFramebufferSize": 1,
-        "FramebufferWidth": 800,
-        "FramebufferHeight": 1280,
+        "FramebufferWidth": 1920,
+        "FramebufferHeight": 1080,
         "DpiX": 213,
         "DpiY": 213,
         "HotplugSupported": 0,