CS-BYO-IMX8MP-V10测试及问题记录

[TOC]
# 测试项
 - [x] GPIO
 - [x] RTC
 - [x] 调试口【1:3V3,2:RX,3:TX,4:GND】
 - [x] 刷机按键,SW3【SW3->2/ON,SW1按下=》USB下载】
 - [x] RESET按键
 - [] 风扇【PWM2：SAI5_RXD0和MIPI LCD EN冲突，TACHO:SAI3_RXC】
 - [x] Buzzer
 - [x] WIFI/BT
 - [x] LVDS屏
 - [x] MIPI屏
 - [x] 触摸
 - [x] LSM6DS3
 - [x] TMP275 【i2c4 0x48】
 - [x] ES8388 【i2c3 0x11】音频输出

# 需要增加
 - [x] ES8388
 - [] 风扇控制
# 先不管
 - [x] 摄像头`【变焦】`

# 焊接问题
## 电池座
```
电池座的接地部位，多加点焊锡，保证电池负极和电池充分接触
```
![](https://leanote.com/api/file/getImage?fileId=68242f9bab644172fc2a9f34)
![](https://leanote.com/api/file/getImage?fileId=68242f9bab644172fc2a9f35)

# 硬件问题
## MIPI/LVDS屏背光控制引脚
MIPI/LVDS屏背光控制引脚同时连到两个CPU IO上了
```
IO脚 LCD0_BL_PWM1_3V3 同时连接到SPDIF_EXT_CLK 和 GPIO1_IO01上了，请断开 SPDIF_EXT_CLK的连接
```
## 功放有噪声
```
把R21改成33K，效果比较明显，但是依然有内耳可听的见的噪声。
功放使能脚没有连接IO，最好是连接上IO来控制功放使能，目前需要把R19 这个10K上拉电阻焊接上。
```
## 摄像头
```
MIPI 摄像头的供电芯片U5换成1.5V输出。U5要换成RT9193-15GB
```
## TypeC2上供电使用了两个线路
![](https://leanote.com/api/file/getImage?fileId=68242f9bab644172fc2a9f33)
```
建议统一使用VCC5V0_USB30_OTG2
```
# 软件研发记录
## LSM6DS3
```
/sys/bus/i2c/drivers/st_lsm6dsx_i2c/2-006a/iio:device0
/sys/bus/i2c/drivers/st_lsm6dsx_i2c/2-006a/iio:device1
/dev/iio:device0
/dev/iio:device1
```
## TMP275
```
# 当前温度值【RO】
/sys/class/hwmon/hwmon0/temp1_input
# 设定报警温度【RW】
/sys/class/hwmon/hwmon0/temp1_max
# 设定报警迟滞温度【RW】当温度大于报警温度时，ALERT信号会拉低，直到下降到报警迟滞温度之前会一直是低，当温度下降低于报警迟滞温度后，ALERT信号会再次拉高
/sys/class/hwmon/hwmon0/temp1_max_hyst

即温度高于`temp1_max`ALERT拉低，之后温度低于`temp1_max_hyst`，ALERT返回高，报警取消
```
## Speaker
```
# OK
amixer cset name='PCM Volume' 192
amixer cset name='Output 2 Playback Volume' 22
amixer cset name='OUT2 Switch' on

# 默认sink
/etc/pulse/default.pa
set-default-sink alsa_output.platform-sound-es8388.stereo-fallback
set-default-source alsa_input.platform-sound-es8388.stereo-fallback

#
# 保存配置
alsactl store -f /var/lib/alsa/asound.state
# 恢复配置
alsactl restore --no-ucm -f /var/lib/alsa/asound.state
# 手动复制asound.state文件
复制过去之后执行一下
alsactl restore -f /var/lib/alsa/asound.state
系统reboot之后会存在某处的配置保存到 /var/lib/alsa/asound.state， 所以提前恢复一下，替换存在某处的配置，具体是哪里，目前还不知道。
# 错误
alsa-lib ../../../alsa-lib-1.2.6.1/src/ucm/main.c:1412:(snd_use_case_mgr_open) error: failed to import hw:0 use case configuration -2
如果遇到上面错误，可以使用alsactl --no-ucm restore命令，这个命令会绕过Use Case Manager（UCM）

# /etc/asound.conf
把里面的hw:0,0换成hw:1,0和其它hw里标记的0换成1

aplay -Dhw:1,0 AudioTest.wav
gst-play-1.0 AudioTest.wav

# 设置音量
pactl set-sink-volume @DEFAULT_SINK@ 100%
gst-play-1.0 AudioTest.wav
gst-play-1.0 h264.mp4

# Android下连接ADB远程时，媒体声音会切换到remote_submix，闹钟和打电话的声音还依然留在speaker上，可以使用dumpsys audio来查看信息，断开ADB远程，可正常播放声音
```
## MIC
```
# 录音
amixer cset name='Capture Digital Volume' 192
amixer cset name='Capture Mute' off
amixer cset name='Differential Mux' 1
amixer cset name='Left PGA Mux' 0
amixer cset name='Right PGA Mux' 0
amixer cset name='Left Channel Capture Volume' 6
amixer cset name='Right Channel Capture Volume' 6
amixer cset name='Mono Mux' 2

# 保存配置
alsactl store -f /var/lib/alsa/asound.state

# 恢复配置
alsactl restore --no-ucm -f /var/lib/alsa/asound.state

# 测试
arecord -V stereo -c 2 -f cd -d 18 -t wav mic.wav
aplay mic.wav
```
## 蓝牙开机启动
`/etc/systemd/system/unblock-bluetooth.service`
```
[Unit]
Description=Unblock Bluetooth at startup
After=chipsee-init.service
Requires=chipsee-init.service

[Service]
Type=oneshot
ExecStart=/bin/bash -c 'sleep 5; /usr/sbin/rfkill unblock bluetooth'

[Install]
WantedBy=multi-user.target
```
## USB速度测试
```
# 使能P10 TYPEC USB【下载口】
焊接R43这个0805的0R电阻

# 使能P11
焊接R185和R183两个0402的2.2R电阻
# 使能P14
焊接R186和R184两个0402的2.2R电阻
P11和P14不能同时使用，它们共用USB1【下载口】

# 使能P6 TYPEC USB
焊接R41和R43两个0805的0R电阻

# 使能P8
焊接R52和R55两个0402的2.2R电阻
P8使用USB2

# 可以都焊接上
R41,R43  0805 0R
R52,R55  0402 2.2R
R183,R184,R185,R186 0402 2.2R

root@imx8mp-eisd:~# dd if=/dev/sda1 of=/dev/null bs=1M count=2000 iflag=direct,nonblock
2000+0 records in
2000+0 records out
2097152000 bytes (2.1 GB, 2.0 GiB) copied, 71.1239 s, 29.5 MB/s
root@imx8mp-eisd:~# dd if=/dev/zero of=/mnt/udisk/test bs=1M count=2000 oflag=direct,nonblock
2000+0 records in
2000+0 records out
2097152000 bytes (2.1 GB, 2.0 GiB) copied, 53.2211 s, 39.4 MB/s
```
## 触摸
```
# 7
焊接R190,R134 0402 0R
去掉R191,R136 0402 0R

# 10.1
焊接R191,R136 0402 0R
去掉R190,R134 0402 0R
```
## Camera
`主板接24PIN 下接座子`
我们使用MIPI CSI1(也就是csi0)
```
mipi_csi_0: csi@32e40000

&mipi_csi_0 {
        #address-cells = <1>;
        #size-cells = <0>;
        status = "okay";

port@0 {
                reg = <0>;
                mipi_csi0_ep: endpoint {
                        remote-endpoint = <&ov5640_mipi_0_ep>;
                        data-lanes = <2>;
                        csis-hs-settle = <13>;
                        csis-clk-settle = <2>;
                        csis-wclk;
                };
        };
};

&i2c4 {
        ov5640_0: ov5640_mipi@3c {
                compatible = "ovti,ov5640";
                reg = <0x3c>;
                pinctrl-names = "default";
                pinctrl-0 = <&pinctrl_csi0_pwn>, <&pinctrl_csi0_rst>, <&pinctrl_csi_mclk>;
                clocks = <&clk IMX8MP_CLK_IPP_DO_CLKO2>;
                clock-names = "xclk";
                assigned-clocks = <&clk IMX8MP_CLK_IPP_DO_CLKO2>;
                assigned-clock-parents = <&clk IMX8MP_CLK_24M>;
                assigned-clock-rates = <24000000>;
                csi_id = <0>;
                powerdown-gpios = <&gpio5 11 GPIO_ACTIVE_HIGH>;
                reset-gpios = <&gpio5 10 GPIO_ACTIVE_LOW>;
                mclk = <24000000>;
                mclk_source = <0>;
                mipi_csi;
                status = "okay";

port {
                        ov5640_mipi_0_ep: endpoint {
                                remote-endpoint = <&mipi_csi0_ep>;
                                data-lanes = <1 2>;
                                clock-lanes = <0>;
                        };
                };
        };
};
```
从串口日志中可以看出摄像头使用的是/dev/video3
```
[    2.889400] i2c 3-003c: Fixing up cyclic dependency with 32e40000.csi
[    3.165365] mxc-mipi-csi2-sam 32e40000.csi: supply mipi-phy not found, using dummy regulator
[    3.165677] : mipi_csis_imx8mp_phy_reset, No remote pad found!
[    3.165728] mxc-mipi-csi2-sam 32e40000.csi: lanes: 2, hs_settle: 13, clk_settle: 2, wclk: 1, freq: 500000000

root@imx8mp-eisd:~# dmesg | grep mx8-img-md
[    6.613633] mx8-img-md: Registered mxc_isi.0.capture as /dev/video3
[    6.626157] mx8-img-md: Registered sensor subdevice: ov5640 3-003c (1)
[    6.644863] mx8-img-md: created link [mxc_isi.0] => [mxc_isi.0.capture]
[    6.651548] mx8-img-md: created link [mxc-mipi-csi2.0] => [mxc_isi.0]
[    6.681141] mx8-img-md: created link [ov5640 3-003c] => [mxc-mipi-csi2.0]
```
快速测试摄像头
```
gst-launch-1.0 v4l2src device=/dev/video3 ! video/x-raw,format=YUY2,width=640,height=480,framerate=30/1 ! videoconvert ! autovideosink

v4l2src device=/dev/video3：指定视频设备为 /dev/video3。
video/x-raw,format=YUY2,width=640,height=480,framerate=30/1：设置视频格式为 YUY2，分辨率为 640x480，帧率为 30fps。
videoconvert：将视频格式转换为适合显示的格式。
autovideosink：自动选择适合的显示插件。
```
# 系统下载
```
# 7
Yocto:
https://chipsee-tmp.s3.amazonaws.com/mksdcardfiles/IMX8MP/Customer/byonyks/1024600/Yocto/prebuilt-imx8mp-byonyks-070-yoctoqt6-emmc-20250117.tar.gz

Android12:
https://chipsee-tmp.s3.amazonaws.com/mksdcardfiles/IMX8MP/Customer/byonyks/1024600/Android12/prebuilt-imx8mp-byonyks-070-android12-emmc-20250117.tar.gz

# 10.1
Yocto:
https://chipsee-tmp.s3.amazonaws.com/mksdcardfiles/IMX8MP/Customer/byonyks/1280800/Yocto/prebuilt-imx8mp-byonyks-101-yoctoqt6-emmc-20250114.tar.gz
Android12:
https://chipsee-tmp.s3.amazonaws.com/mksdcardfiles/IMX8MP/Customer/byonyks/1280800/Android12/prebuilt-imx8mp-byonyks-101-android12-emmc-20250117.tar.gz
```

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