linux-kernel - Re: [PATCH 1/2] arm/arm64: dts: Enable 2.5G Ethernet port on CN9130-CRB

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Date:   Sun, 17 Oct 2021 22:15:45 +0000
From:   Chris Packham <Chris.Packham@...iedtelesis.co.nz>
To:     Gregory CLEMENT <gregory.clement@...tlin.com>,
        "andrew@...n.ch" <andrew@...n.ch>,
        "sebastian.hesselbarth@...il.com" <sebastian.hesselbarth@...il.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "kostap@...vell.com" <kostap@...vell.com>
CC:     "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] arm/arm64: dts: Enable 2.5G Ethernet port on
 CN9130-CRB


On 14/10/21 3:52 am, Gregory CLEMENT wrote:
> Hello Chris,
>
>> Enable the 2.5G Ethernet port by setting the status to "okay" and the
>> phy-mode to "2500base-x" on the cn9130-crb boards. Tested on a
>> CN9130-CRB-A.
>>
>> Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>
> As I am not sure that next week the pull request will be accepted when
> you will send the v2 for the second patch, I already applied the one on
> mvebu/dt64
OK thanks. This patch is independent of the switch/sfp so this should be 
fine.
> Thanks,
>
> Gregory
>
>
>> ---
>>
>> The Marvell SDK adds 2500base-t and uses it in the equivalent dtsi but
>> looking at the documentation for both the SoC and the PHY I think
>> 2500base-x is correct for the system interface (the line side is
>> 2500base-t).
>>
>>   arch/arm64/boot/dts/marvell/cn9130-crb.dtsi | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/marvell/cn9130-crb.dtsi b/arch/arm64/boot/dts/marvell/cn9130-crb.dtsi
>> index 505ae69289f6..e7918f325646 100644
>> --- a/arch/arm64/boot/dts/marvell/cn9130-crb.dtsi
>> +++ b/arch/arm64/boot/dts/marvell/cn9130-crb.dtsi
>> @@ -214,8 +214,8 @@ &cp0_eth1 {
>>   };
>>   
>>   &cp0_eth2 {
>> -	/* This port uses "2500base-t" phy-mode */
>> -	status = "disabled";
>> +	status = "okay";
>> +	phy-mode = "2500base-x";
>>   	phy = <&nbaset_phy0>;
>>   	phys = <&cp0_comphy5 2>;
>>   };
>> -- 
>> 2.33.0
>>