netdev - Re: [PATCH v4 net-next v4 14/14] net: dsa: mv88e6xxx: abstract switch registers accesses

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Message-ID: <20160620163053.GE22920@lunn.ch>
Date:	Mon, 20 Jun 2016 18:30:53 +0200
From:	Andrew Lunn <andrew@...n.ch>
To:	Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel@...oirfairelinux.com,
	"David S. Miller" <davem@...emloft.net>,
	Florian Fainelli <f.fainelli@...il.com>,
	Ben Dooks <ben.dooks@...ethink.co.uk>,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Subject: Re: [PATCH v4 net-next v4 14/14] net: dsa: mv88e6xxx: abstract
 switch registers accesses

On Mon, Jun 20, 2016 at 12:03:37PM -0400, Vivien Didelot wrote:
> When the SMI address of the switch chip is zero, the chip assumes to be
> the only one on the SMI master bus and thus responds to all its known
> SMI devices addresses (port registers, Global2, etc.)
> 
> When its SMI address is not zero, some chips (e.g. 88E6352) use an
> indirect access through two SMI Command and Data registers.
> 
> Other models (e.g. 88E6060) using less than 16 internal SMI addresses
> always use a direct access.
> 
> Add a capability flag to describe chips supporting the (indirect)
> Multi-chip Addressing Mode, and a low-level API to access the registers
> via SMI.
> 
> Other accesses (like Ethernet management frames) may be added later.
> 
> Signed-off-by: Vivien Didelot <vivien.didelot@...oirfairelinux.com>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

This series is now ready for merging.

Thanks
    Andrew