netdev - Re: Question about default m88e1510 LED configuration of marvell phy

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Date:   Tue, 15 Jan 2019 14:41:37 +0800
From:   "shenjian (K)" <shenjian15@...wei.com>
To:     Andrew Lunn <andrew@...n.ch>
CC:     Wang Dongsheng <dongsheng.wang@...-semitech.com>,
        Andrew Lunn <andrew@lun>, David Miller <davem@...emloft.net>,
        <netdev@...r.kernel.org>,
        "Zhuangyuzeng (Yisen)" <yisen.zhuang@...wei.com>,
        Salil Mehta <salil.mehta@...wei.com>,
        "lipeng (Y)" <lipeng321@...wei.com>,
        Yunsheng Lin <linyunsheng@...wei.com>,
        Dengweiwei <dengweiwei@...wei.com>
Subject: Re: Question about default m88e1510 LED configuration of marvell phy



在 2019/1/15 11:39, Andrew Lunn 写道:
> On Tue, Jan 15, 2019 at 11:07:17AM +0800, shenjian (K) wrote:
>> Hi, all
>> 	We encounted a problem when using the marvel 88e151x phy driver, the
>> link(LED[0])/ack(LED[1]) leds worked abnormally since we updated our kernel to v4.19.
>> The act led kept on and never blink.  It works well when we use genphy driver, aslo
>> works well when use marvell phy in kernel v4.18.
>>
>> 	I found that the default led configuration had been changed to 0x1177
>> by commit commit 077772468ec1(net: phy: marvell: change default m88e1510 LED configuration).
> 
> It is a difficult job deciding what the driver should configure. I
> would actually prefer to keeps with the reset default, which would be
> 0x101e according to the datasheet.
> 
> If you are using device tree, you have the option of poking values
> into registers, using marvell,reg-init. There are a few examples you
> can copy. Doing that guarantees you have the configuration you want.
> 
>     Andrew
> 
> .
> 
Thanks, Andrew.

But we are using acpi mode, is there any ohter way to poke values into registers ?