linux-kernel - Re: [PATCH 0/6] Add PPE device tree node for Qualcomm IPQ SoC

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Message-ID: <840fc48b-956d-47e8-8307-c419afb1efc2@quicinc.com>
Date: Fri, 12 Jan 2024 23:00:35 +0800
From: Jie Luo <quic_luoj@...cinc.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        <andersson@...nel.org>, <konrad.dybcio@...aro.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <conor+dt@...nel.org>
CC: <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
        <quic_kkumarcs@...cinc.com>, <quic_suruchia@...cinc.com>,
        <quic_soni@...cinc.com>, <quic_pavir@...cinc.com>,
        <quic_souravp@...cinc.com>, <quic_linchen@...cinc.com>,
        <quic_leiwei@...cinc.com>
Subject: Re: [PATCH 0/6] Add PPE device tree node for Qualcomm IPQ SoC



On 1/10/2024 8:13 PM, Krzysztof Kozlowski wrote:
> On 10/01/2024 12:20, Luo Jie wrote:
>> The PPE(packet process engine) hardware block is supported by Qualcomm
>> IPQ platforms, such as IPQ9574 and IPQ5332. The PPE includes the various
>> packet processing modules such as the routing and bridging flow engines,
>> L2 switch capability, VLAN and tunnels. Also included are integrated
>> ethernet MAC and PCS(uniphy), which is used to connect with the external
>> PHY devices by PCS.
>>
>> This patch series enables support for the following DTSI functionality
>> for Qualcomm IPQ9574 and IPQ5332 chipsets.
>>
>> 1. Add PPE (Packet Processing Engine) HW support
>>
>> 2. Add IPQ9574 RDP433 board support, where the PPE is connected
>>     with qca8075 PHY and AQ PHY.
>>
>> 3. Add IPQ5332 RDP441 board support, where the PPE is connected
>>     with qca8386 and SFP
>>
>> PPE DTS depends on the NSSCC clock driver below, which provides the
>> clocks for the PPE driver.
> 
> DTS cannot depend on clock drivers. Maybe you meant that it depends on
> NSSCC clock controller DTS changes, which would be fine. However
> depending on drivers is neither necessary nor allowed.
> 
> Best regards,
> Krzysztof
> 

Yes, this DTSI series depends on the NSSCC clock controller DTS patches 
which are referred to in the cover letter. I will rectify the cover 
letter text when the series resumes later.