linux-kernel - Re: [PATCH v17 09/14] remoteproc: mediatek: Remove dependency of MT8195 SCP L2TCM power control on dual-core SCP

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Message-ID: <8f6390e4-690b-948c-f91b-f99768ba7cf0@collabora.com>
Date:   Tue, 5 Sep 2023 09:46:35 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Tinghan Shen <tinghan.shen@...iatek.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     linux-remoteproc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH v17 09/14] remoteproc: mediatek: Remove dependency of
 MT8195 SCP L2TCM power control on dual-core SCP

Il 01/09/23 10:09, Tinghan Shen ha scritto:
> Previously, SCP core 0 controlled the power of L2TCM and dictated that
> SCP core 1 could only boot after SCP core 0. To address this constraint,
> extracted the power control flow of L2TCM and made it shared
> between both cores, enabling support for arbitrary boot order.
> 
> The flow for controlling L2TCM power has been incorporated into the
> mt8195_scp_before_load() and mt8195_scp_stop() APIs, which are
> respectively invoked during the rproc->ops->start() and
> rproc->ops->stop() operations. These APIs effectively serve the same
> purpose as the rproc prepare()/unprepare() APIs."
> 
> Signed-off-by: Tinghan Shen <tinghan.shen@...iatek.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>