采用 3.10 内核。按原理图修改了 dts 中的配置：
keyboard0:keyboard{
compatible = "allwinner,keyboard_2000mv";
reg = <0x0 0x01c23400 0x0 0x400>;
interrupts = <22>;
status = "okay";
key_cnt = <4>;
key1 = <200 115>;
key2 = <400 114>;
key3 = <600 139>;
key4 = <800 28>;
};打开调试，按几个键，发现在 sunxi_isr_key 中调用 sunxi_keyboard_read_data 获取的 ADC 值都是 0 或 1，和按键的 ADC 值对不上。
最近编辑记录 szyusong (2018-09-25 21:06:22)
离线
没问题了，板子虚焊了。
[ 13.881607] key down
[ 13.895040] report data: key_val : 26 transfer_code: 255 , scancode: 4
[ 13.921882] report data: key_val : 25 transfer_code: 4 , scancode: 3
[ 13.948704] report data: key_val : 25 transfer_code: 3 , scancode: 3
[ 14.002270] report data: key_val : 26 transfer_code: 3 , scancode: 4
[ 14.029113] report data: key_val : 63 transfer_code: 4
[ 14.036106] key up
[ 14.898467] key down
[ 14.911895] report data: key_val : 20 transfer_code: 255 , scancode: 3
[ 14.938726] report data: key_val : 20 transfer_code: 3 , scancode: 3
[ 14.965560] report data: key_val : 20 transfer_code: 3 , scancode: 3
[ 14.992430] report data: key_val : 20 transfer_code: 3 , scancode: 3
[ 15.019221] report data: key_val : 20 transfer_code: 3 , scancode: 3
[ 15.046092] report data: key_val : 63 transfer_code: 3
[ 15.053174] key up
[ 16.303534] key down
[ 16.316968] report data: key_val : 14 transfer_code: 255 , scancode: 2
[ 16.343824] report data: key_val : 14 transfer_code: 2 , scancode: 2
[ 16.370668] report data: key_val : 14 transfer_code: 2 , scancode: 2
[ 16.410847] report data: key_val : 63 transfer_code: 2
[ 16.417921] key up
[ 16.852411] key down
[ 16.865815] report data: key_val : 7 transfer_code: 255 , scancode: 1
[ 16.892705] report data: key_val : 7 transfer_code: 1 , scancode: 1
[ 16.919527] report data: key_val : 7 transfer_code: 1 , scancode: 1
[ 16.959706] report data: key_val : 63 transfer_code: 1
[ 16.966763] key up
[ 17.575221] key down
[ 17.588669] report data: key_val : 7 transfer_code: 255 , scancode: 1
[ 17.615507] report data: key_val : 7 transfer_code: 1 , scancode: 1
[ 17.642386] report data: key_val : 7 transfer_code: 1 , scancode: 1
[ 17.669211] report data: key_val : 7 transfer_code: 1 , scancode: 1
[ 17.678124] report data: key_val : 7 transfer_code: 1
[ 17.685165] key up
[ 17.843348] key down
[ 17.856765] report data: key_val : 7 transfer_code: 255 , scancode: 1
[ 17.883631] report data: key_val : 7 transfer_code: 1 , scancode: 1
[ 17.910482] report data: key_val : 7 transfer_code: 1 , scancode: 1
[ 17.937308] report data: key_val : 63 transfer_code: 1
[ 17.944389] key up
[ 18.057853] key down
[ 18.071253] report data: key_val : 7 transfer_code: 255 , scancode: 1
[ 18.098114] report data: key_val : 7 transfer_code: 1 , scancode: 1
[ 18.138329] report data: key_val : 63 transfer_code: 1
[ 18.145410] key up
[ 18.446212] key down
[ 18.459637] report data: key_val : 14 transfer_code: 255 , scancode: 2
[ 18.486484] report data: key_val : 14 transfer_code: 2 , scancode: 2
[ 18.513351] report data: key_val : 14 transfer_code: 2 , scancode: 2
[ 18.553551] report data: key_val : 63 transfer_code: 2
[ 18.560625] key up
[ 18.687472] key down
[ 18.700914] report data: key_val : 14 transfer_code: 255 , scancode: 2
[ 18.727758] report data: key_val : 14 transfer_code: 2 , scancode: 2
[ 18.754610] report data: key_val : 14 transfer_code: 2 , scancode: 2
[ 18.794839] report data: key_val : 63 transfer_code: 2
[ 18.801915] key up
[ 19.651305] key down
[ 19.664763] report data: key_val : 20 transfer_code: 255 , scancode: 3
[ 19.691636] report data: key_val : 20 transfer_code: 3 , scancode: 3
[ 19.718463] report data: key_val : 20 transfer_code: 3 , scancode: 3
[ 19.745320] report data: key_val : 20 transfer_code: 3 , scancode: 3
[ 19.785539] report data: key_val : 63 transfer_code: 3
[ 19.792621] key up
[ 20.066696] key down
[ 20.080092] report data: key_val : 26 transfer_code: 255 , scancode: 4
[ 20.106950] report data: key_val : 25 transfer_code: 4 , scancode: 3
[ 20.187309] report data: key_val : 63 transfer_code: 3
[ 20.194395] key up
[ 20.401542] key down
[ 20.495201] key up
[ 20.615691] key down
[ 20.682554] key up
[ 20.829802] key down
[ 20.843217] report data: key_val : 26 transfer_code: 255 , scancode: 4
[ 20.896804] report data: key_val : 26 transfer_code: 4 , scancode: 4
[ 20.923671] report data: key_val : 63 transfer_code: 4
[ 20.930664] key up
[ 21.325104] key down
[ 21.338509] report data: key_val : 25 transfer_code: 255 , scancode: 3
[ 21.365357] report data: key_val : 25 transfer_code: 3 , scancode: 3
[ 21.418933] report data: key_val : 26 transfer_code: 3 , scancode: 4
[ 21.445764] report data: key_val : 63 transfer_code: 4
[ 21.452763] key up
[ 21.686708] key down
[ 21.700164] report data: key_val : 25 transfer_code: 255 , scancode: 3
[ 21.780491] report data: key_val : 26 transfer_code: 3 , scancode: 4
[ 21.807351] report data: key_val : 63 transfer_code: 4
[ 21.814346] key up
[ 21.927859] key down
[ 21.941271] report data: key_val : 26 transfer_code: 255 , scancode: 4
[ 22.008244] report data: key_val : 63 transfer_code: 4
[ 22.015243] key up
[ 22.128762] key down
[ 22.209025] key up
[ 22.530240] key down
[ 22.543658] report data: key_val : 26 transfer_code: 255 , scancode: 4
[ 22.597247] report data: key_val : 26 transfer_code: 4 , scancode: 4
[ 22.624134] report data: key_val : 26 transfer_code: 4 , scancode: 4
[ 22.637543] report data: key_val : 58 transfer_code: 4
[ 22.644519] key up
[ 22.731319] key down
[ 22.744759] report data: key_val : 26 transfer_code: 255 , scancode: 4
[ 22.771637] report data: key_val : 25 transfer_code: 4 , scancode: 3
[ 22.798443] report data: key_val : 26 transfer_code: 3 , scancode: 4
[ 22.838693] report data: key_val : 63 transfer_code: 4
[ 22.845688] key up 离线