TinkerBoard2板卡BuildRoot系统配置YYT-MIPI7LCD
摘录风火轮WikiTinker board 2 Debian下 MIPI-DSI屏幕的适配方法 | 风火轮Wiki (smartfire.cn)
简单介绍一下目前 RK3399的显示框架。目前的Debian采用的都是Linux DRM框架进行显示，在DRM框架中，其显示通路如下图所示
图中的几个组成部分
Framebuffer：显存，嵌入式系统使用的是内存的一部分
CRTC：显示控制器，在RK3399平台是SOC 内部VOP，RK3399里面包含两个VOP;
Encoder：输出转换器，指RGB、LVDS、DSI、eDP、HDMI、CVBS、VGA 等显示接口，它本质就是一个编码器，将CRTC提供过来的信号编码为对应显示接口需要的信号。
Connector：连接器，指encoder 和panel 之间交互的接口部分；
Panel：各种具体的屏幕
因此，要驱动DSI屏幕，有三个部分需要配置，包括VOP，DSI控制器，屏幕的参数。
开启vopb与vopl，设置时钟与MMU
&vopb { status = "okay"; assigned-clocks = <&cru DCLK_VOP0_DIV>; assigned-clock-parents = <&cru PLL_VPLL>; }; &vopb_mmu { status = "okay"; }; &vopl { status = "okay"; assigned-clocks = <&cru DCLK_VOP1_DIV>; assigned-clock-parents = <&cru PLL_CPLL>; }; &vopl_mmu { status = "okay"; };设置vop与显示接口之间的绑定关系
&route_hdmi { status = "okay"; connect = <&vopb_out_hdmi>; }; &route_dsi{ status = "okay"; connect = <&vopl_out_dsi>; };
DSI和panel的配置
&dsi { status = "okay"; + //配置dsi每个lane的频率，一般出现花屏，条纹等可以调整这个值改善 + //如果这个值不配置，DSI驱动会自动计算 + rockchip,lane-rate = <500>; panel@0 { - compatible ="simple-panel-dsi"; + status = "okay"; + compatible = "simple-panel-dsi"; reg = <0>; + //背光，即使不启用背光调节功能，这个属性也必须配置，且backlight的节点必须是有效的 + //否则驱动会加载失败 + backlight = <&backlight>; + //使能脚，如果enable 接到一个gpio，这个属性必须设置 + enable-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>; + + width-mm = <476>; + height-mm = <267>; + bpc=<8>; + bus-format = <0x100a>;//; + dsi,flags = <0x3>; + dsi,format = <0>;//MIPI_DSI_FMT_RGB888: + dsi,lanes = <4>; + panel-init-sequence = [ + 15 00 02 80 ac + 15 00 02 81 b8 + 15 00 02 82 09 + 15 00 02 83 78 + 15 00 02 84 7f + 15 00 02 85 bb + 15 00 02 86 70 + ]; rpi-init-sequence = [ 29 00 06 10 02 03 00 00 00 @@ -739,6 +770,26 @@ }; }; + display-timings { + native-mode = <&timing10>; + timing10: timing10 { + clock-frequency = <65000000>; //DCLK + hactive = <1024>; //hactive + vactive = <600>; //vactive + hfront-porch = <160>; //hfp + hback-porch = <160>; //hbp + hsync-len = <10>; //hsa + vfront-porch = <12>; //vfp + vsync-len = <1>; //vsa + vback-porch = <23>; //vbp + hsync-active = <0>; //hync 极性控制 置 1 反转极性 + vsync-active = <0>; //vsync 极性控制 置 1 反转极性 + de-active = <1>; //DEN 极性控制 + pixelclk-active = <0>; //dclk 极性控制 + }; + };
panel的配置，是参考风火轮的wiki， http://wiki.smartfire.cn/Tinkerboard2/lcd
触摸驱动配置&i2c8
+ + goodix_ts@5d { + compatible = "goodix,gt9xx"; + reg = <0x14>; + touch-gpio = <&gpio2 RK_PC3 GPIO_ACTIVE_LOW>; + reset-gpio = <&gpio2 RK_PC2 GPIO_ACTIVE_LOW>; + max-x = <1024>; + max-y = <600>; + tp-size = <911>; + status = "okay"; + }; };
1、backlight问题
①pin gpio1-8 already requested by pinctrl; cannot claim for backlight
原因：backlight里面用到的管脚已经被pinctrl用了，修改冲突的管脚，如果没用到可以删除（删除backlight的或者pinctrl的都行）
@@ -1448,15 +1461,46 @@
post-pwm-on-delay-ms = <15>;//EDP T15,min 10ms, Backlight node:post-pwm-on-delay-ms = <15>;
pwm-off-delay-ms = <15>;//EDP T16,min 10ms, Backlight node:pwm-off-delay-ms = <15>;
disable_delay = <15>;//EDP T17,min 10
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_lvds_bl_en>;
};@@ -954,10 +1006,6 @@
gpio_init_config {
gpio_init: gpio_init {
rockchip,pins =
- <1 7 0 &pcfg_pull_none>,
- <1 8 0 &pcfg_pull_none>,
- <1 9 0 &pcfg_pull_none>,
- <1 10 0 &pcfg_pull_none>,
<2 19 0 &pcfg_pull_none>;
};
};②pwm-backlight backlight: Dropping the link to regulator.0
查看log信息
[ 3.018844] panel_simple_probe+
[ 3.021638] panel-simple-dsi ff960000.dsi.0: ff960000.dsi.0 supply power not found, using dummy regulator
[ 3.024685] panel-simple-dsi ff960000.dsi.0: ff960000.dsi.0 supply vsp not found, using dummy regulator
[ 3.027778] panel-simple-dsi ff960000.dsi.0: ff960000.dsi.0 supply vsn not found, using dummy regulator
[ 3.031300] pwm-backlight backlight: backlight supply power not found, using dummy regulator
[ 3.034394] pwm-backlight backlight: Linked as a consumer to regulator.0
[ 3.037108] pwm-backlight backlight: Dropping the link to regulator.0
[ 3.040104] sn65dsi84_is_connected sn65dsi84 connect = 0Backligh没有配置对，查一下backlight配置的管脚、pwm是否正确，status是否为okay
@@ -1042,7 +1090,7 @@
};
&backlight {
- status = "disabled";
+ status = "okay";
compatible = "pwm-backlight";
pwms = <&pwm0 0 400000 0>;//f=2500 t=400,000ns
brightness-levels = <
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-tinker_board_2.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-tinker_board_2.dtsi
index e98c554371ca..a49794fe9e0e 100755
--- a/arch/arm64/boot/dts/rockchip/rk3399-tinker_board_2.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-tinker_board_2.dtsi
@@ -731,7 +731,7 @@
};
&pwm0 {
- status = "disabled";
+ status = "okay";
};
&pwm1 {修改编译后运行log如下：
[ 1.837780] pwm-backlight backlight: backlight supply power not found, using dummy regulator
[ 1.837874] pwm-backlight backlight: Linked as a consumer to regulator.0
[ 1.838160] mpp_service mpp-srv: 00b8be6742e6 author: Ding Wei 2021-09-26 video: rockchip: mpp: fix issue for CONFIG_IOMMU_SUPPORT=n
[ 1.838190] mpp_service mpp-srv: probe start
[ 1.838594] iommu: Adding device ff660000.rkvdec to group2、probe of ff960000.dsi.0 failed with error -22
[ 1.955121] sn65dsi86_detect fail, 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
[ 1.955139] sn65dsi86_detect sn65dsi86->status=0
[ 1.955156] sn65dsi86_probe : sn65dsi86 is disconnected!
[ 1.957464] sn65dsi84_is_connected sn65dsi84 connect = 0
[ 1.957488] panel_simple_probe+
[ 1.957560] panel-simple-dsi ff960000.dsi.0: ff960000.dsi.0 supply power not found, using dummy regulator
[ 1.957631] panel-simple-dsi ff960000.dsi.0: Linked as a consumer to regulator.0
[ 1.957696] panel-simple-dsi ff960000.dsi.0: ff960000.dsi.0 supply vsp not found, using dummy regulator
[ 1.957787] panel-simple-dsi ff960000.dsi.0: ff960000.dsi.0 supply vsn not found, using dummy regulator
[ 1.957900] panel_simple_probe-
[ 1.957919] panel_simple_dsi_probe-
[ 1.958041] panel-simple-dsi: probe of ff960000.dsi.0 failed with error -22
[ 1.958376] midgard ff9a0000.gpu: Linked as a consumer to regulator.12执行ls -l /sys/class/drm/没看到DSI信息
在panel-simple.c跑到了CONFIG_TINKER_MCU里面了，kernel config的tinker_board_2_defconfig里面没有定义，但还是跑进去了
查了代码发现./drivers/misc/Kconfig里面默认是支持的
config TINKER_MCU
tristate "tinker mcu"
default y
depends on I2C
help
Control the power of toshiba tc358762 panel on tinker board.
config TINKER_MCU_ILI9881C
tristate "tinker mcu ili9881c"
default y
depends on I2C
help
Control the power of ASUS ili9881c panel on tinker board.重新在tinker_board_2_defconfig里面不设置值
diff --git a/arch/arm64/configs/tinker_board_2_defconfig b/arch/arm64/configs/tinker_board_2_defconfig
index ed330560cf53..81b0cd7ab7a1 100755
--- a/arch/arm64/configs/tinker_board_2_defconfig
+++ b/arch/arm64/configs/tinker_board_2_defconfig
@@ -483,10 +483,12 @@ CONFIG_ROCKCHIP_ANALOGIX_DP=y
CONFIG_ROCKCHIP_CDN_DP=y
CONFIG_ROCKCHIP_DW_HDMI=y
CONFIG_ROCKCHIP_DW_MIPI_DSI=y
-CONFIG_DRM_PANEL_TOSHIBA_TC358762=y
-CONFIG_DRM_PANEL_ASUS_ILI9881C=y
+# CONFIG_DRM_PANEL_TOSHIBA_TC358762 is not set
+# CONFIG_DRM_PANEL_ASUS_ILI9881C is not set
CONFIG_DRM_I2C_SN65DSI84=y
CONFIG_DRM_I2C_SN65DSI86=y
+# CONFIG_TINKER_MCU is not set
+# CONFIG_TINKER_MCU_ILI9881C is not set
CONFIG_ROCKCHIP_INNO_HDMI=y
CONFIG_ROCKCHIP_LVDS=y
CONFIG_ROCKCHIP_DRM_TVE=y3、LCD可以正常显示
出现这些log说明drm驱动已经能够正常运作
[ 1.864582] rockchip-drm display-subsystem: Linked as a consumer to ff8f0000.vop [ 1.864630] rockchip-drm display-subsystem: Linked as a consumer to ff900000.vop [ 1.865445] rockchip-drm display-subsystem: Linked as a consumer to fec00000.dp [ 1.865806] rockchip-drm display-subsystem: Linked as a consumer to ff940000.hdmi [ 1.866175] rockchip-drm display-subsystem: Linked as a consumer to ff960000.dsi
这个log说明dsi控制器已经工作，且已经绑定到drm框架中
[ 2.530379] rockchip-drm display-subsystem: bound ff940000.hdmi (ops 0xffffff800911ef10) [ 2.530429] rockchip-drm display-subsystem: bound ff960000.dsi (ops 0xffffff800911fe48)
这个log说明输出的lane clock，一般来说输出这个信息，说明dsi控制器和panel已经绑定
[ 2.804623] rockchip_rk3399_pll_wait_lock: timeout waiting for pll to lock [ 2.804626] rockchip_rk3399_pll_set_params: pll update unsuccessful, trying to restore old params [ 2.804655] clk_core_set_rate_nolock: failed to set pll_vpll clock to run at 12000000 [ 2.804680] rockchip-vop ff8f0000.vop: [drm:vop_crtc_atomic_enable] Update mode to 1024x600p75, type: 16 [ 2.804992] rockchip-vop ff900000.vop: [drm:vop_crtc_atomic_enable] Update mode to 1920x1200p60, type: 11 [ 2.827330] dwhdmi-rockchip ff940000.hdmi: Rate 193250000 missing; compute N dynamically [ 2.827424] dw-mipi-dsi ff960000.dsi: [drm:dw_mipi_dsi_encoder_enable] final DSI-Link bandwidth: 504 x 4 Mbps
4、屏幕触摸校准
[ 0.989699] <<-GTP-INFO->> GTP driver installing...
[ 0.989862] goodix_ts_probe() start
[ 0.989888] <<-GTP-INFO->> GTP Driver Version: V2.2<2014/01/14>
[ 0.989908] <<-GTP-INFO->> GTP I2C Address: 0x14
[ 0.989971] Goodix-TS 8-0014: 8-0014 supply tp not found, using dummy regulator
[ 0.990037] Goodix-TS 8-0014: Linked as a consumer to regulator.0
[ 1.011463] goodix_ts_probe() cfg_file_num = 0
[ 1.011530] <<-GTP-INFO->> Guitar reset
[ 1.099001] <<-GTP-INFO->> IC Version: 911_1060
[ 1.121213] <<-GTP-INFO->> _1614
[ 1.121233] <<-GTP-INFO->> X_MAX: 4096, Y_MAX: 4096, TRIGGER: 0x00
[ 54.197447] #### goodix_ts_work_func() line:974 coor_data[0] input_x:3269 input_y:2704 input_w:11
[ 54.197449] #### gtp_touch_down() line:424 gtp_touch_down abs_x_max=4096, abs_y_max=4096
[ 54.197454] #### gtp_touch_down() line:427 gtp_touch_down x=3269, y=2704
[ 54.197458] #### gtp_touch_down() line:428 gtp_touch_down (!bgt911 && !bgt970)=0
[ 54.197461] #### gtp_touch_down() line:437 gtp_touch_down x=3269, y=2704
[ 54.197465] #### gtp_touch_down() line:448 GTP_ICS_SLOT_REPORT:0
[ 54.197474] #### gtp_touch_down() line:457 ID:0, X:3269, Y:2704, W:11
[ 54.197478] <<-GTP-DEBUG->> [458]ID:0, X:3269, Y:2704, W:11 通过打印可以看到屏幕初始化没问题，但是X_MAX和Y_MAX没有从dtsi里面获取到，看代码发现获取参数的地方屏蔽了，如下
+++ b/drivers/input/touchscreen/gt9xx/gt9xx.c
@@ -2664,9 +2664,10 @@ static int goodix_ts_probe(struct i2c_client *client, const struct i2c_device_id
} else if (val == 911) {
m89or101 = FALSE;
bgt911 = TRUE;
- gtp_change_x2y = TRUE;
+ // gtp_change_x2y = TRUE;
+ gtp_change_x2y = FALSE;
gtp_x_reverse = FALSE;
- gtp_y_reverse = TRUE;
+ gtp_y_reverse = FALSE;
} else if (val == 9110) {
m89or101 = FALSE;
bgt9110 = TRUE;
@@ -2716,17 +2717,19 @@ static int goodix_ts_probe(struct i2c_client *client, const struct i2c_device_id
dev_err(&client->dev, "no max-x defined\n");
return -EINVAL;
}
- //ts->abs_x_max = val;
+ ts->abs_x_max = val;
if (of_property_read_u32(np, "max-y", &val)) {
dev_err(&client->dev, "no max-y defined\n");
return -EINVAL;
}
- //ts->abs_y_max = val;
+ ts->abs_y_max = val;
if (of_property_read_u32(np, "configfile-num", &val)) {
ts->cfg_file_num = 0;触摸不准的话需要导入该屏的cfg配置文件
+++ b/drivers/input/touchscreen/gt9xx/gt9xx_cfg.h
@@ -21,7 +21,9 @@
/* CFG for GT911 */
u8 gtp_dat_gt11[] = {
/* <1200, 1920>*/
- #include "WGJ89006B_GT911_Config_20140625_085816_0X43.cfg"
+ /* #include "WGJ89006B_GT911_Config_20140625_085816_0X43.cfg" */
+ /* <1024, 600>*/
+ #include "WGJ89006B_GT911_Config_20230908_085816_0X43.cfg"
};
u8 gtp_dat_gt9110[] = {TinkerBoard2板卡运行BuildRoot系统
补丁下载地址：
0001-YYT-MIPI7LCD-tinker-2-buildroot.zip资源-CSDN文库