RE: [PATCH v3 net-next] net: stmmac: Add support for MDIO interrupts

[Jose Abreu]

From: Andrew Lunn <andrew@xxxxxxx>
Date: Sep/06/2019, 15:24:46 (UTC+00:00)

> On Fri, Sep 06, 2019 at 01:31:14PM +0000, Jose Abreu wrote:
> > From: Voon Weifeng <weifeng.voon@xxxxxxxxx>
> > Date: Sep/05/2019, 13:05:30 (UTC+00:00)
> > 
> > > DW EQoS v5.xx controllers added capability for interrupt generation
> > > when MDIO interface is done (GMII Busy bit is cleared).
> > > This patch adds support for this interrupt on supported HW to avoid
> > > polling on GMII Busy bit.
> > 
> > Better leave the enabling of this optional because the support for it is 
> > also optional depending on the IP HW configuration.
> 
> Hi Jose
> 
> If there a register which indicates if this feature is part of the IP?

Yes. That would be SMASEL which is Bit 5 of register MAC_HW_Feature0.

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Thanks,
Jose Miguel Abreu