雄迈的3520DV300+nvp6124b的I2C工作不正常,求助

本帖最后由 wobn 于 2017-12-14 08:56 编辑

雄迈板子，3520DV300+nvp6124b作为开发板，可是加载nvp6124b驱动，就是I2C通信不正常。
内核启动的时候：
i2c /dev entries driver
hisi_i2c hisi_i2c.0: Hisilicon [i2c-0] probed!
这时发现是有内核加载了I2C


用海思的测试命令：
读：
i2c_read 0 0x72 0x8 0x8 0x1 0x1
*** Board tools : ver0.0.1_20121120 *** hi_i2c_wait_txfifo_notfull->284:
[debug]: {source/utils/cmdshell.c:166}
last transmit error, int_raw_status: 0x750!
cmdstr:i2c_read
i2c_num:0x0, dev_addr:0
x72; reg_addr:0x 8; reg_addr_end:0x 8; rhi_i2c_wait_txfifo_notfull->286: eg_width: 1; data_width: 1; reg_step:0x
last tx_abrt_cause is 1.
1.


hi_i2c_wait_rxfifo_notempty->307:
wait timeout! auto_status: 0xc0b00000

hi_i2c_wait_rxfifo_notempty->321:
transmit error, int_raw_status: 0x750!

hi_i2c_wait_rxfifo_notempty->323:
tx_abrt_cause is 1.

CMD_I2C_READ error!

do errro
[END]

写：
i2c_write 0 0x72 0x8 0xa5 0x1 0x1
*** Board tools : ver0.0.1_20121120 ***
[debug]: {source/utils/cmdshell.c:166}cmdstr:i2c_write
dev_addr:0x72; reg_addr:0x 8; reg_value:0xa5; reg_width: 1; data_width: 1.
[END]