[PATCH v3 0/8] arm64: rockchip: Initial GeekBox enablement
peppe.cavallaro at st.com
Fri Mar 11 01:09:49 PST 2016
On 3/10/2016 5:47 PM, Dinh Nguyen wrote:
> On Thu, Mar 10, 2016 at 3:13 AM, Giuseppe CAVALLARO
> <peppe.cavallaro at st.com> wrote:
>> On 3/9/2016 5:31 PM, Dinh Nguyen wrote:
>>> On Wed, Mar 9, 2016 at 8:53 AM, Giuseppe CAVALLARO
>>> <peppe.cavallaro at st.com> wrote:
>>>> Hi Tomeu, Dinh, Andreas
>>>> I need a sum and help from you to go ahead on the
>>>> tx timeout.
>>>> The "stmmac: MDIO fixes" seems to be the candidate to
>>>> fix the phy connection and I will send the V2 asap (Andreas' comment).
>>>> So, supposing the probe is ok and phy is connected,
>>>> I need your input ...
>>>> Tomeu: after revering the 0e80bdc9a72d (stmmac: first frame
>>>> prep at the end of xmit routine) the network is
>>>> not stable and there is a timeout after a while.
>>>> The box has 3.50 with normal desc settings.
>>>> Dinh: the network is ok, I wonder if you can share a boot
>>>> log just to understand if the normal or enhanced
>>>> descriptors are used.
>>> Here it is:
>>> [ 0.850523] stmmac - user ID: 0x10, Synopsys ID: 0x37
>>> [ 0.855570] Ring mode enabled
>>> [ 0.858611] DMA HW capability register supported
>>> [ 0.863128] Enhanced/Alternate descriptors
>>> [ 0.867482] Enabled extended descriptors
>>> [ 0.871482] RX Checksum Offload Engine supported (type 2)
>>> [ 0.876948] TX Checksum insertion supported
>>> [ 0.881204] Enable RX Mitigation via HW Watchdog Timer
>>> [ 0.886863] socfpga-dwmac ff702000.ethernet eth0: No MDIO subnode found
>>> [ 0.899090] libphy: stmmac: probed
>>> [ 0.902484] eth0: PHY ID 00221611 at 4 IRQ POLL (stmmac-0:04) active
>> Thx Dinh, so you are using the Enhanced/Alternate descriptors
>> I am debugging on my side on a setup with normal descriptors, I let you
> Doesn't the printout "Enhanced/Alternate descriptors" mean that I'm using
> Enhanced/Alternate descriptors?
yes this means that you have the Databook 3.70a and, from the HW
capability register, the driver will use the Enhanced/Alternate
descriptors. This is the same HW I am using on my side where the
stmmac is working fine.
In the case where it is failing on net-next, although on Databook 3.50a,
the HW capability register says that there is no enhanced descriptors
and the driver uses the normal ones.
Tomeu, I kindly ask you to try the patch attached. I found a bug on Tx
path for normal descriptors. Please let me know if this help.
Also let me know if we actually need to revert the 0e80bdc9a72d.
I am trying to find some HW where test the normal descriptors to
speed-up the tests on my side directly.
Let me know and thx in advance.
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