hikey970使用SPI2片选无效

风火轮用户01079

使用hikey970的SPI2搭载sensor做数据传输，但是发现CS总是为高电平，我试着直接往CS的GPIO写0，读出来的值也是0，但是CS的电压值一直为高，这样我的sensor就没发正常使用，请求大佬给予技术支持。

风火轮用户01079

附加内存log：
[  531.402482] mali e82c0000.mali: error detected from slot 0, job status 0x00000051 (INSTR_INVALID_ENC)
[  531.402520] mali e82c0000.mali: t6xx: GPU fault 0x51 from job slot 0
[  531.413372] mali e82c0000.mali: error detected from slot 0, job status 0x00000051 (INSTR_INVALID_ENC)
[  531.413401] mali e82c0000.mali: t6xx: GPU fault 0x51 from job slot 0
[  531.420140] mali e82c0000.mali: error detected from slot 0, job status 0x0000005b (UNKNOWN)
[  531.420157] mali e82c0000.mali: t6xx: GPU fault 0x5b from job slot 0
[  531.430810] mali e82c0000.mali: error detected from slot 0, job status 0x00000051 (INSTR_INVALID_ENC)
[  531.431206] mali e82c0000.mali: t6xx: GPU fault 0x51 from job slot 0
[  531.447987] mali e82c0000.mali: error detected from slot 0, job status 0x00000051 (INSTR_INVALID_ENC)
[  531.448005] mali e82c0000.mali: t6xx: GPU fault 0x51 from job slot 0
[  531.497381] mali e82c0000.mali: error detected from slot 0, job status 0x00000051 (INSTR_INVALID_ENC)
[  531.497488] mali e82c0000.mali: t6xx: GPU fault 0x51 from job slot 0

风火轮用户01079

有没有人成功使用SPI2的DMA模式，能否分享一下？非常感谢