AM625: AM625 Memory mapped GPIO access

Hi Siva,

For doing GPIO MMR writes, see the Technical Reference Manual (https://www.ti.com/lit/pdf/spruiv7) for the key information. See Section 12.2.1.4 GPIO Functional Description in the TRM for the explanation of the register functions. The actual register list is in section 14.8.2.1 GPIO Registers/Table 14-16368.

Best Regards,

Anshu

Hi Anshu,

Thanks for the inputs. Meanwhile, do you have any reference for binding GPIO interrupts triggers SPI_READ or any function call?

thanks,

siva. 

Hi Siva,

We don't have any existing reference for this. Can you provide any more details? Maybe we can loop in some other experts to comment.

Thanks,

Anshu

Hi Anshu,

I need patch kind  of thing to be added to device tree as well as in driver part, if neccessary. In TRM I got what register to be used. But it would speed up things if I get similar code or something.

thanks,

siva. 

Hi Siva,

We do not have any existing code for this use case.

Here are some resources that could help:
https://www.kernel.org/doc/html/v6.1/driver-api/spi.html

https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/tree/Documentation/devicetree/bindings/spi/omap-spi.yaml?h=ti-linux-6.1.y

https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/tree/drivers/spi/spi-omap2-mcspi.c?h=ti-linux-6.1.y

Best Regards,

Anshu