On 14/01/17 16:15, jonsm...@gmail.com wrote:
> On Sat, Jan 14, 2017 at 10:42 AM, André Przywara <andre.przyw...@arm.com>
> wrote:
>> On 14/01/17 14:42, jonsm...@gmail.com wrote:
>>
>> Hi Jon,
>>
>> (dropping the U-Boot ML, since this is not all related to to OpiZero or
>> to U-Boot. Next time please send a separate email (opening a new
>> thread). And I recommend just the linux-sunxi list for those kind of
>> questions or join the #linux-sunxi IRC channel on Freenode).
>>
>>> Can you simultaneously use both Ethernet interfaces on the A64? I've
>>> received conflicting answers to this question.
>>
>> Which "both" interfaces? I only know about one interface on the A64.
>> Are you talking about WiFi and Ethernet?
>
> I always thought there was a single Ethernet controller on the A64
Yes.
> for EMAC and GMAC
which are Ethernet controllers (MACs).
The A64, H3 and H5 have only one controller called "EMAC", although
it is different from the old 100MBit EMAC in the A10 and A20. The A20
and R40 have _two_ controllers, one old EMAC and a "GMAC".
> and it is the PHY that is switchable.
> But several people
> have told me that it is possible to run two simultaneous Ethernet net
> connections on the A64 - one with the internal 100Mb PHY
The A64 does NOT have an internal PHY.
> and one with
> an external Gb PHY. So are these people confused or am I wrong and
> there is a way to get two simultaneous interfaces on the A64?
The H5 and H3 have an internal PHY, though it does not help to get two
simultaneous connections. In the MAC registers you select one PHY, which
can either by the internal one _or_ an externally connected one (via
RGMII/MII). And even if you *could* select them at the same time you
would still get only one data stream to transmit or receive.
So: one MAC => one simultaneous connection.
Cheers,
Andre.
>
>> Or about another SoC? The A20 and R40 have two separate, even different
>> Ethernet MACs, which appear to be usable simultaneously (from looking at
>> the documentation). But I don't know of any board doing that or anyone
>> ever tried that.
>
> I believe someone got simultaneous MACs going in the A20 about five
> years ago. There was a blog talking about it, but the website is gone
> now. It was a hobbyist trying to make a router based on the A20.
>
>>
>> Cheers,
>> Andre.
>>
>>> On Fri, Jan 13, 2017 at 9:06 PM, Andre Przywara <andre.przyw...@arm.com>
>>> wrote:
>>>> The OrangePi Zero can happily use the EMAC along with its integrated
>>>> PHY to use Ethernet (for TFTP booting, for instance).
>>>> Add the emac node to the board .dts by copying it from the OrangePi One
>>>> DT.
>>>>
>>>> Signed-off-by: Andre Przywara <andre.przyw...@arm.com>
>>>> ---
>>>> arch/arm/dts/sun8i-h2-plus-orangepi-zero.dts | 11 +++++++++++
>>>> 1 file changed, 11 insertions(+)
>>>>
>>>> diff --git a/arch/arm/dts/sun8i-h2-plus-orangepi-zero.dts
>>>> b/arch/arm/dts/sun8i-h2-plus-orangepi-zero.dts
>>>> index 0989434..20d489c 100644
>>>> --- a/arch/arm/dts/sun8i-h2-plus-orangepi-zero.dts
>>>> +++ b/arch/arm/dts/sun8i-h2-plus-orangepi-zero.dts
>>>> @@ -99,6 +99,17 @@
>>>> status = "okay";
>>>> };
>>>>
>>>> +&emac {
>>>> + phy = <&phy1>;
>>>> + phy-mode = "mii";
>>>> + allwinner,use-internal-phy;
>>>> + allwinner,leds-active-low;
>>>> + status = "okay";
>>>> + phy1: ethernet-phy@1 {
>>>> + reg = <1>;
>>>> + };
>>>> +};
>>>> +
>>>> &mmc0 {
>>>> pinctrl-names = "default";
>>>> pinctrl-0 = <&mmc0_pins_a>;
>>>> --
>>>> 2.8.2
>>>>
>>>> --
>>
>
>
>
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