1）941 initialized registers as follows
ds90ub941_single_write(ds90ub941, 0x01, 0x0F);
msleep(3);
ds90ub941_single_write(ds90ub941, 0x03, 0xBA);
ds90ub941_single_write(ds90ub941, 0x1E, 0x01);
ds90ub941_single_write(ds90ub941, 0x5B, 0x21);
ds90ub941_single_write(ds90ub941, 0x4F, 0x8C);
ds90ub941_single_write(ds90ub941, 0x40, 0x04);
ds90ub941_single_write(ds90ub941, 0x41, 0x05);
ds90ub941_single_write(ds90ub941, 0x42, 0x14);
ds90ub941_single_write(ds90ub941, 0x01, 0x00);
msleep(3);
ds90ub941_single_write(ds90ub941, 0x07, 0x54);
ds90ub941_single_write(ds90ub941, 0x08, 0x54);
2） Operation 948, read register 0 of 948, failed
ds90ub948_i2c_read: transfer failed -6
ds90ub948_check_device: Can not read ds90ub948
ds90ub948: probe of 1-002c failed with error -5
3）941 register, as follows
0=0x34 1=0x0 2=0x0 3=0xBA 4=0x0 5=0x0 6=0x58 7=0x54 8=0x54 9=0x1 10=0x6
11=0x0 12=0x12 13=0x30 14=0x0 15=0x0 16=0x0 17=0x0 18=0x0 19=0x8F 20=0x0
21=0x0 22=0xFE 23=0x1E 24=0x7F 25=0x7F 26=0x1 27=0x0 28=0xD 29=0x0 30=0x1
31=0x0 32=0xB 33=0x0 34=0x25 35=0x0 36=0x0 37=0x0 38=0x0 39=0x0 40=0x1
41=0x20 42=0x20 43=0xA0 44=0x0 45=0x0 46=0xA5 47=0x5A 48=0x1 49=0x9 50=0x0
51=0x5 52=0xC 53=0x0 54=0x0 55=0x0 56=0x0 57=0x0 58=0x0 59=0x0 60=0x0
61=0x0 62=0x81 63=0x2 64=0x4 65=0x5 66=0x14 67=0x0 68=0x0 69=0x0 70=0x0
71=0x0 72=0x0 73=0x0 74=0x0 75=0x0 76=0x0 77=0x0 78=0x0 79=0x8C 80=0x16
81=0x0 82=0x0 83=0x0 84=0x2 85=0x10 86=0x0 87=0x2 88=0x0 89=0x0 90=0x2
91=0x61 92=0x7 93=0x6 94=0x44 95=0x0 96=0x22 97=0x2 98=0x0 99=0x0 100=0x5
101=0xC 102=0xE 103=0x0 104=0x0 105=0x0 106=0x0 107=0x0 108=0x0 109=0x0 110=0x20
111=0x0 112=0x0 113=0x0 114=0x0 115=0x0 116=0x0 117=0x0 118=0x0 119=0x0 120=0x0
121=0x0 122=0x0 123=0x0 124=0x0 125=0x0 126=0x0 127=0x0 128=0x0 129=0x0 130=0x0
131=0x0 132=0x0 133=0x0 134=0x0 135=0x0 136=0x0 137=0x0 138=0x0 139=0x0 140=0x0
141=0x0 142=0x0 143=0x0 144=0x0 145=0x0 146=0x0 147=0x0 148=0x0 149=0x0 150=0x0
151=0x0 152=0x0 153=0x0 154=0x0 155=0x0 156=0x0 157=0x0 158=0x0 159=0x0 160=0x0
161=0x0 162=0x0 163=0x0 164=0x0 165=0x0 166=0x0 167=0x0 168=0x0 169=0x0 170=0x0
171=0x0 172=0x0 173=0x0 174=0x0 175=0x0 176=0x0 177=0x0 178=0x0 179=0x0 180=0x0
181=0x0 182=0x0 183=0x0 184=0x0 185=0x0 186=0x0 187=0x0 188=0x0 189=0x0 190=0x0
191=0x0 192=0x0 193=0x0 194=0x82 195=0x0 196=0x50 197=0x0 198=0x0 199=0x44 200=0x40
201=0x0 202=0x0 203=0x0 204=0x0 205=0x2 206=0xFF 207=0x0 208=0x0 209=0x0 210=0x0
211=0x0 212=0x0 213=0x0 214=0x0 215=0x0 216=0x0 217=0x0 218=0x0 219=0x0 220=0x0
221=0x0 222=0x0 223=0x0 224=0x0 225=0x0 226=0x82 227=0x0 228=0x40 229=0x8 230=0x0
231=0x0 232=0x0 233=0x0 234=0x0 235=0x0 236=0x0 237=0x2 238=0x0 239=0x0 240=0x5F
241=0x55 242=0x42 243=0x39 244=0x34 245=0x31
Our two displays, the main screen and the secondary screen are the same screen, 949 connected 948 can normally light up the screen, 941 connected 948 this way 948 i2c can not read and write register normally