Re: ixp4xx ethernet driver issues

[Krzysztof Halasa <khc@xxxxxxxxx>]

"Mo, Vincent" <vincent.mo@xxxxxxxxxxxxxxxxxx> writes:

>>Even though MDIO doesn't use the firmware, the NPE needs it right?  I
>>thought it can't work with out
>>the microcode/firmware.

Sure, BTW it needs the "basic" (non-VLAN) firmware file.

>>Could you please explain what you mean by "platform" structure?

I mean that thing in ... mach-ixp4xx/*.c, something like

/* Built-in 10/100 Ethernet MAC interfaces */
static struct eth_plat_info eth_plat[] = {
        {
                .phy            = 0,
                .rxq            = 3,
                .txreadyq       = 20,
        }, {
                .phy            = 1,
                .rxq            = 4,
                .txreadyq       = 21,
        }
};

static struct platform_device device_eth_tab[] = {
        {
                .name                   = "ixp4xx_eth",
                .id                     = IXP4XX_ETH_NPEB,
                .dev.platform_data      = eth_plat,
        }, {
                .name                   = "ixp4xx_eth",
                .id                     = IXP4XX_ETH_NPEC,
                .dev.platform_data      = eth_plat + 1,
        }
};

but I see in the log it's the same as mine.

>>Another thing I want to point out, the IXP465 is not outputting the
>>ETHB_RXCLK to the phy.  This is strange, the phy is clearly receiving
>>packets and is toggling its' link/activity line, but it's not able to
>>transmit the received packets to the CPU because there is no receive
>>clock.
>
> I'm correcting myself, the phy should be driving the RXCLK line.  I'm
> not sure why the phy is not driving it...

Perhaps mii-tool (or with 2.6.29-rc* also ethtool) can tell us?

Are you sure your board uses the right 25 MHz crystal/clock gen?
Verifying with at least a frequency meter may be a good idea.
OTOH since it works with Intel's driver...
-- 
Krzysztof Halasa

-------------------------------------------------------------------
List admin: http://lists.arm.linux.org.uk/mailman/listinfo/linux-arm
FAQ:        http://www.arm.linux.org.uk/mailinglists/faq.php
Etiquette:  http://www.arm.linux.org.uk/mailinglists/etiquette.php