linux-kernel - Re: [PATCH net-next 1/3] net: phy: broadcom: add helper to write/read RDB registers

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Message-ID: <f264bcad85571a44fabf33fe7e13664e@walle.cc>
Date:   Sat, 18 Apr 2020 22:09:48 +0200
From:   Michael Walle <michael@...le.cc>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Andrew Lunn <andrew@...n.ch>, linux-hwmon@...r.kernel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S . Miller" <davem@...emloft.net>
Subject: Re: [PATCH net-next 1/3] net: phy: broadcom: add helper to write/read
 RDB registers

Am 2020-04-18 17:55, schrieb Florian Fainelli:
> On 4/18/2020 7:13 AM, Andrew Lunn wrote:
>> On Fri, Apr 17, 2020 at 09:28:56PM +0200, Michael Walle wrote:
>>> RDB regsiters are used on newer Broadcom PHYs. Add helper to read, 
>>> write
>>> and modify these registers.
>> 
>> It would be nice to give a hint what RDB means?
> 
> It means Register Data Base, it is meant to be a linear register
> offset as opposed to the more convulated shadow 18, 1c or other
> expansion registers.

Oh I just found some comment to another linux patch explaining this.
Because there is no trace what RDB actually means in the datasheets
from Broadcom I've seen so far.

-michael