sunxi-i2c触摸i2c驱动问题

[NULL037]

今天在使用Tina D1 SDK调试触摸屏时遇到一个很奇怪的问题
问题现象:

root@TinaLinux:/# insmod /lib/modules/5.4.61/focaltech_ts.ko
[   28.605538] input: fts_ts as /devices/platform/soc@3000000/sunxi-i2c2/i2c-2/2-0014/input/input1
[   28.615693] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[   28.623829] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x14)
[   28.658097] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x14)
[   28.665731] fts_ts 2-0014: 2-0014 supply  not found, using dummy regulator
[   28.673637] fts_ts 2-0014: 2-0014 supply  not found, using dummy regulator
[   28.681388] debugfs: Directory '2-0014-' with parent 'reg-dummy-regulator-dummy' already present!
[   28.691410] fts_ts: probe of 2-0014 failed with error -16
root@TinaLinux:/# 

重启开发板后重新装载驱动

root@TinaLinux:/# insmod /lib/modules/5.4.61/focaltech_ts.ko
[   12.416101] input: fts_ts as /devices/platform/soc@3000000/sunxi-i2c2/i2c-2/2-0014/input/input1
[   12.426177] sunxi-i2c sunxi-i2c2: Bus error
[   12.430918] sunxi-i2c sunxi-i2c2: engine-mode: bus state: 0x0, isn't idle
[   12.441486] sunxi-i2c sunxi-i2c2: STOP failed!
[   12.446450] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x14)
[   12.477260] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x14)
[   12.484824] fts_ts 2-0014: 2-0014 supply  not found, using dummy regulator
[   12.492661] fts_ts 2-0014: 2-0014 supply  not found, using dummy regulator
[   12.500344] debugfs: Directory '2-0014-' with parent 'reg-dummy-regulator-dummy' already present!
[   12.510280] fts_ts: probe of 2-0014 failed with error -16

从linux-5.4/drivers/i2c/busses/i2c-sunxi.c代码来看，就是芯片向设备发送数据后，没有回应。第二次启动提示i2c2被占用。但我并没有在其他地方操作i2c2。

已确定的点：
1.MIPI屏的触摸芯片型号为ft5366，功能正常，已经在V853上测试过是正常的
2.装载驱动后没到probe匹配设备树就报错了，是在调用i2c-sunxi程序时出的问题

请问各位大佬有遇到这种问题吗？

[whycan]

@null037
检查一下硬件部分，比如电源波纹等。

[woodcat]

软重启？可能没完全掉电

[NULL037]

@woodcat 应该不是软重启的问题，我换了一块板子也是一样的问题