Xeon D-1500, register addresses for GPIO

[PRain]

I have an Intel Xeon D-1500 family processor.

I need to know the addresses of the following registers GPIO_USE_SEL, GP_IO_SEL, GPI_ROUT etc.Is there a document that shows these addresses?

[idata]

Hi rainey74,

I will proceed with the investigation to see if this information is obtainable by any means and will reply back as soon as I can. Eduardo_B

[idata]

Hi rainey74,

here are the documents that have that information that you are looking for:https://www.intel.com/content/www/us/en/processors/xeon/xeon-d-1500-datasheet-vol-1.html Xeon-d-1500 Datasheet Vol-1https://www.intel.com/content/www/us/en/processors/xeon/xeon-d-1500-datasheet-vol-2.html Xeon-d-1500 Datasheet Vol-2https://www.intel.com/content/www/us/en/processors/xeon/xeon-d-1500-datasheet-vol-3.html Xeon-d-1500 Datasheet Vol-3https://www.intel.com/content/www/us/en/processors/xeon/xeon-d-1500-datasheet-vol-4.html Xeon-d-1500 Datasheet Vol-4Please let me know if you need anything else.Eduardo_B

[PRain]

Hi Eduardo,

Thanks for the information. Those datasheets are useful, but I'm still a little confused.

I see that in section 7.10 of Datasheet 1 it describes GPIO_USE_SEL as "GPIOBASE + Offset" (where the offset is the range 00h–03h depending upon the bank).

As an example lets pick pin 6 (SoC GPIO6). I know this is in the first bank - so the offset for GPIO_USE_SEL is 00h from GPIO_BASE. But what is GPIO_BASE???

Reading the datasheet for my supermicro motherboard it seems to indicate that the base address could be 0x500, however I don't see anything in these Intel datasheets to confirm that.

In section 7.1.5 it seems to indicate that GPIOBASE is a register with an offset of 48h–4Bh - but what is it an offset from?

In terms of operation I was originally thinking that if I knew the address of GPIO_USE_SEL, GP_IO_SEL and GP_LVL, then I could just program these to setup a GPIO pin.

But do I need to actually set the GPIOBASE register to some value first?

Thanks in advance, for your help.

Paul

[idata]

Hi rainey74,

I am very glad the document was useful. I will proceed to review your request and will reply as soon as I get more data to share with you.Eduardo_B

[idata]

Hi rainey74,

At this point we have shared all the information that is visible to us. Since Xeon-D are designed for OEM (Original equipment manufacturer), you will need to get in contact with them if more detailed information is needed. Let me know if there is something else.Eduardo_B

[pennygrady]

Hi PRain,

Is this problem solved? I meet the same question.