On 01.08.2019 07:20, Tao Ren wrote:
> On 7/30/19 11:00 PM, Tao Ren wrote:
>> On 7/30/19 10:53 PM, Heiner Kallweit wrote:
>>> On 31.07.2019 02:12, Tao Ren wrote:
>>>> On 7/29/19 11:00 PM, Heiner Kallweit wrote:
>>>>> On 30.07.2019 07:05, Tao Ren wrote:
>>>>>> On 7/29/19 8:35 PM, Andrew Lunn wrote:
>>>>>>> On Mon, Jul 29, 2019 at 05:25:32PM -0700, Tao Ren wrote:
>>>>>>>> BCM54616S feature "PHY_GBIT_FEATURES" was removed by commit
>>>>>>>> dcdecdcfe1fc
>>>>>>>> ("net: phy: switch drivers to use dynamic feature detection"). As
>>>>>>>> dynamic
>>>>>>>> feature detection doesn't work when BCM54616S is working in RGMII-Fiber
>>>>>>>> mode (different sets of MII Control/Status registers being used), let's
>>>>>>>> set "PHY_GBIT_FEATURES" for BCM54616S explicitly.
>>>>>>>
>>>>>>> Hi Tao
>>>>>>>
>>>>>>> What exactly does it get wrong?
>>>>>>>
>>>>>>> Thanks
>>>>>>> Andrew
>>>>>>
>>>>>> Hi Andrew,
>>>>>>
>>>>>> BCM54616S is set to RGMII-Fiber (1000Base-X) mode on my platform, and
>>>>>> none of the features (1000BaseT/100BaseT/10BaseT) can be detected by
>>>>>> genphy_read_abilities(), because the PHY only reports
>>>>>> 1000BaseX_Full|Half ability in this mode.
>>>>>>
>>>>> Are you going to use the PHY in copper or fibre mode?
>>>>> In case you use fibre mode, why do you need the copper modes set as
>>>>> supported?
>>>>> Or does the PHY just start in fibre mode and you want to switch it to
>>>>> copper mode?
>>>>
>>>> Hi Heiner,
>>>>
>>>> The phy starts in fiber mode and that's the mode I want.
>>>> My observation is: phydev->link is always 0 (Link status bit is never set
>>>> in MII_BMSR) by using dynamic ability detection on my machine. I checked
>>>> phydev->supported and it's set to "AutoNeg | TP | MII | Pause |
>>>> Asym_Pause" by dynamic ability detection. Is it normal/expected? Or maybe
>>>> the fix should go to different places? Thank you for your help.
>>>>
>>>
>>> Not sure whether you stated already which kernel version you're using.
>>> There's a brand-new extension to auto-detect 1000BaseX:
>>> f30e33bcdab9 ("net: phy: Add more 1000BaseX support detection")
>>> It's included in the 5.3-rc series.
>>
>> I'm running kernel 5.2.0. Thank you for the sharing and I didn't know the
>> patch. Let me check it out.
>
> I applied above patch and ca72efb6bdc7 ("net: phy: Add detection of 1000BaseX
> link mode support") to my 5.2.0 tree but got following warning when booting
> up my machine:
>
> "PHY advertising (0,00000200,000062c0) more modes than genphy supports, some
> modes not advertised".
>
It's genphy_config_advert complaining which is called from genphy_config_aneg.
genphy_config_aneg deals with the standard Base-T modes. Therefore in your case
most likely you want to provide an own config_aneg callback (in case autoneg
is applicable at all).
> The BCM54616S PHY on my machine only reports 1000-X features in
> RGMII->1000Base-KX mode. Is it a known problem?
>
> Anyways let me see if I missed some dependency/follow-up patches..
>
>
> Cheers,
>
> Tao
>
Heiner
