netdev - Re: stmmac DT property snps,axi

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Message-ID: <120aca00-02a8-3d88-7aad-a21d239aafb2@st.com>
Date:   Thu, 8 Dec 2016 14:36:23 +0100
From:   Alexandre Torgue <alexandre.torgue@...com>
To:     Niklas Cassel <niklas.cassel@...s.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>
CC:     <netdev@...r.kernel.org>
Subject: Re: stmmac DT property snps,axi_all

Hi Niklas,

On 12/05/2016 05:18 PM, Niklas Cassel wrote:
> Hello Giuseppe
>
>
> I'm trying to figure out what snps,axi_all is supposed to represent.
>
> It appears that the value is saved, but never used in the code.
>
> Looking at the register specification, I'm guessing that it represents
> Address-Aligned Beats, but there is already the property snps,aal
> for that.

IMO, it is not useful. Indeed AXI_AAL is a read only bit (in AXI bus 
mode register) and reflects the aal bit in DMA bus register.
As you know we use "snps,aal" to set aal bit in DMA bus register.
So "snps,axi_all" entry seems useless. Let's see with Peppe.

Regards
Alex

>
>
> Regards,
> Niklas
>