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发表于 2018-5-31 10:24:28
板凳
你好，楼主，参考你的代码，我使用AIO-3288J开发板（android系统），编译成功，/dev目录下成功创建设备点，/sys/class目录下文件也创建成功；
使用逻辑分析仪，检测tx,clk，cs都没有波形产生，查看内核信息，爆出如下错误，软中断有误；一起帮忙看下，啥原因，谢谢！
另外问下，dts中的spi-rst和spi-dc需要如何设置具体的gpio？我使用AIO-3288J真实的spi2进行开发，dts设置和spi2原理图设置如下：
内核信息打印错误：
[ 1.095714] [<c0013ec4>] (unwind_backtrace+0x0/0xe0) from [<c001176c>] (show_stack+0x10/0x14)
[ 1.095741] [<c001176c>] (show_stack+0x10/0x14) from [<c02785d8>] (Ldiv0+0x8/0x10)
[ 1.095768] [<c02785d8>] (Ldiv0+0x8/0x10) from [<c034d568>] (pump_transfers+0x4c/0x67c)
[ 1.095793] [<c034d568>] (pump_transfers+0x4c/0x67c) from [<c003e78c>] (tasklet_action+0x80/0xe0)
[ 1.095813] [<c003e78c>] (tasklet_action+0x80/0xe0) from [<c003df24>] (__do_softirq+0x144/0x2b4)
[ 1.095832] [<c003df24>] (__do_softirq+0x144/0x2b4) from [<c003e0c4>] (run_ksoftirqd+0x30/0x78)
[ 1.095853] [<c003e0c4>] (run_ksoftirqd+0x30/0x78) from [<c005d4d8>] (smpboot_thread_fn+0x22c/0x234)
[ 1.095878] [<c005d4d8>] (smpboot_thread_fn+0x22c/0x234) from [<c00561bc>] (kthread+0xa0/0xac)
[ 1.095905] [<c00561bc>] (kthread+0xa0/0xac) from [<c000da98>] (ret_from_fork+0x14/0x3c) |
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