i.MX Processors中的主题 Re: SPI ioctl hangs in imx6ul

SPI ioctl hangs in imx6ul

obulesu_veggidi — Mon, 19 Aug 2024 12:14:23 GMT

Hi,

sometimes spi ioctl in imx6ul hangs indefinitely.
ioctl(sSpiObj.spiFd, SPI_IOC_MESSAGE(1), &sSpiTransfer);

What could be the reason, is the issue belongs to the driver or SPI config in dts file?

Bio_TICFSL — Mon, 19 Aug 2024 14:15:49 GMT

Hello,

The as example:

struct spi_ioc_transfer tr[256];

has to be defined as a global variable.

Regards

obulesu_veggidi — Wed, 21 Aug 2024 06:01:48 GMT

Hello Bio_TICFSL,
I made it as a global variable, still the problem exist.
Do I need to change SPI config in dts?

Bio_TICFSL — Wed, 21 Aug 2024 13:58:56 GMT

Hi, You said it happens sometimes, this should be a problem of the hardware you have connected.

Regards

obulesu_veggidi — Wed, 21 Aug 2024 14:24:10 GMT

Hello Bio_TICFSL,
We have interfaced CLRC663 chip which is a NXP contactless card reader chip.