Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [PATCH v2 1/4] pci: iProc: define Broadcom iProc PCIe binding | Date | Sat, 13 Dec 2014 20:46:42 +0100 |
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On Saturday 13 December 2014 11:05:52 Arend van Spriel wrote: > > Makes sense. I think that is what Hauke meant by "adding > additional support for registering to bcma". So the discovery info is a > piece of read-only memory in the chip. Its address is stored in the > chipcommon core register space. BCMA parses that memory blob resulting > in a list of cores which register address info. We could add DT support > in BCMA matching the compatible string and register a core for it.
Ah, interesting idea. That would mirror what we do for drivers/amba, I like the idea.
> However, apart from the discovery info a "discoverable ARM AXI" chip has > a register space per core that provides common procedures like > enable/disable, reset, core status, which are implemented in BCMA. I am > not seeing that register space in the DT examples so I guess this IP > block is not there for iProc chips.
I wouldn't draw conclusions from the absence of some node. Maybe these registers are present but just not used by the original BSP.
Arnd
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