netdev - Re: [PATCH v8 14/14] dt-bindings: net: ar803x: add qca8084 PHY properties

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Date: Mon, 18 Dec 2023 11:01:03 +0800
From: Jie Luo <quic_luoj@...cinc.com>
To: "Russell King (Oracle)" <linux@...linux.org.uk>
CC: Andrew Lunn <andrew@...n.ch>, <davem@...emloft.net>, <edumazet@...gle.com>,
        <kuba@...nel.org>, <pabeni@...hat.com>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <hkallweit1@...il.com>, <corbet@....net>, <p.zabel@...gutronix.de>,
        <f.fainelli@...il.com>, <netdev@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-doc@...r.kernel.org>, Christian Marangi <ansuelsmth@...il.com>
Subject: Re: [PATCH v8 14/14] dt-bindings: net: ar803x: add qca8084 PHY
 properties



On 12/17/2023 12:09 AM, Russell King (Oracle) wrote:
> On Sat, Dec 16, 2023 at 10:41:28PM +0800, Jie Luo wrote:
>>
>>
>> On 12/16/2023 9:51 PM, Russell King (Oracle) wrote:
>>> On Sat, Dec 16, 2023 at 11:21:53AM +0100, Andrew Lunn wrote:
>>>>> The following is the chip package, the chip can work on the switch mode
>>>>> like the existed upstream code qca8k, where PHY1-PHY4 is connected with
>>>>> MAC1-MAC4 directly;
>>>>
>>>> Ah, that is new information, and has a big effect on the design.
>>>
>>> This QCA8084 that's being proposed in these patches is not a PHY in
>>> itself, but is a SoC. I came across this:
>>>
>>>    https://www.rt-rk.com/android-tv-solution-tv-in-smartphone-pantsstb-based-on-qualcomm-soc-design/
>>
>> The chip mentioned in the link you mentioned is SoC, which is not the
>> chip that the qca8084 driver work for.
> 
> So there's two chips called QCA8084 both produced by Qualcomm? I find
> that hard to believe.
> 

The SoC mentioned in the link you provided is the APQ8084 that is 
introduced in the link below:
https://www.qualcomm.com/products/mobile/snapdragon/smartphones/snapdragon-8-series-mobile-platforms/snapdragon-processors-805

https://hwbot.org/hardware/processor/snapdragon_805_apq8084_pro__(8084_fusion_4.5)_2700mhz/

The driver here is for qca8084, which has the different prefix,
and qca8084 is the Ethernet CHIP like qca8081, but qca8084 is
multiple ports(quad-phy).