[OpenWrt-Devel] [PATCH 00/22] Conversion of ARMv4 Gemini to DT and multiplatform

Linus Walleij linus.walleij at linaro.org
Tue Jan 24 15:47:35 EST 2017

Hans, Florian et al: does any of you have a copy of the kernel source
dump(s) from Teltonika, Raidsonic or Wiliboard?

Would be nice to have the stuff that vendors are using.

On Tue, Jan 24, 2017 at 6:24 PM, Hans Ulli Kroll
<ulli.kroll at googlemail.com> wrote:

> This is a dual GMAC !
> They are two different base address for each GMAC and one shared
> base address for both of them.
> This is all in one address space which remaps the driver.
> And to make it worse two interrupt lines, one of them is also shared.
> Any ideas to "convert" this into DT ??
> Because I think it's impossible to split both GMAC interfaces ??

Sounds odd.  Yeah hardware.h lists this:

#define GEMINI_TOE_BASE         0x60000000
#define GEMINI_GMAC0_BASE       0x6000A000
#define GEMINI_GMAC1_BASE       0x6000E000

I guess one approach is to make a driver handling all of it in one,
let it ioremap all regions and support one or two GMACs on the same
TOE. More complex solutions is to share the TOE using
syscons regmap mechanism but it looks cumbersome.

   compatible = "cortina,genesis-gmac-ethernet";
   reg = <0x60000000 0xa000>, <0x6000a000 0x4000>, <0x6000e000 0x4000>;
   interrupts = <1 IRQ_TYPE_LEVEL_HIGH>, <2 IRQ_TYPE_LEVEL_HIGH>;

Or something like that?

Linus Walleij
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