linux-kernel - Re: [PATCH v1 00/15] Add support for MT8195 SCP 2nd core

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Date:   Thu, 2 Jun 2022 11:52:38 +0800
From:   Tinghan Shen <tinghan.shen@...iatek.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Lee Jones <lee.jones@...aro.org>,
        Benson Leung <bleung@...omium.org>,
        Guenter Roeck <groeck@...omium.org>,
        Daisuke Nojiri <dnojiri@...omium.org>,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        "Dustin L. Howett" <dustin@...ett.net>,
        Tzung-Bi Shih <tzungbi@...nel.org>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Prashant Malani <pmalani@...omium.org>,
        "Enric Balletbo i Serra" <enric.balletbo@...labora.com>,
        Brian Norris <briannorris@...omium.org>
CC:     <linux-remoteproc@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <chrome-platform@...ts.linux.dev>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        <weishunc@...gle.com>
Subject: Re: [PATCH v1 00/15] Add support for MT8195 SCP 2nd core

Hi Krzysztof,
 
On Wed, 2022-06-01 at 13:46 +0200, Krzysztof Kozlowski wrote:
> On 01/06/2022 13:21, Tinghan Shen wrote:
> > The MT8195 System Companion Processor(SCP) is a dual-core RISC-V MCU.
> > Current mediatek remoteproc driver only supports bring-up single core 
> > SCP or the 1st core of a dual-core SCP. This series support to bring-up 
> 
>       ^^ this or is confusing a bit.
> 
> Does this mean that MT8195 has three RISC-V MCUs?

My intention is to express that current SCP driver supports bring-up,
1. the single core SCP, e.g. MT8183
2. the 1st core of dual-core SCP, e.g. MT8195


Perhaps rewriting as follows is preferable?

"The mediatek remoteproc driver currently only allows bringing up a single 
core SCP. It only supports bringing up the 1st core in SoCs with a dual-core SCP."
> 
> > the 2nd core of a dual-core SCP.
> 
> 
> 
> Best regards,
> Krzysztof