linux-kernel - Re: [PATCH v13 00/11] Add support for MT8195 SCP 2nd core

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Message-ID: <ZJSCIhhLTv/pP/HA@p14s>
Date:   Thu, 22 Jun 2023 11:17:22 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     Tinghan Shen <tinghan.shen@...iatek.com>,
        Bjorn Andersson <andersson@...nel.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>,
        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 v13 00/11] Add support for MT8195 SCP 2nd core

On Thu, Jun 22, 2023 at 12:00:08PM +0200, AngeloGioacchino Del Regno wrote:
> Il 07/06/23 09:22, Tinghan Shen ha scritto:
> > The mediatek remoteproc driver currently only allows bringing up a
> > single core SCP, e.g. MT8183. It also only bringing up the 1st
> > core in SoCs with a dual-core SCP, e.g. MT8195. This series support
> > to bring-up the 2nd core of the dual-core SCP.
> > 
> 
> Hello TingHan,
> 
> Can you please address the comments on patch [05/11] and send a new version ASAP?
> That's the only remaining issue, so after that the series should be ready.
> 

There is also the refactoring work in patch 07, and I expect that to take a
while.

> Thanks,
> Angelo
> 
> > v12 -> v13:
> > 1. replace subdevice with new mediatek scp operations in patchset 7
> > 2. add review tag to patchset 3
> > 3. modify mediatek,scp phandle name of video-codec@...00000 at patchset 11
> > 
> > v11 -> v12:
> > 1. add scp_add_single/multi_core() to patchset 6
> > 2. remove unused comment in patchset 6
> > 3. rename list name from mtk_scp_cluster to mtk_scp_list
> > 4. rewrite the multi-core probe flow
> > 5. disable rproc->autoboot and boot rproc by request_firmware_nowait at patchset 7
> > 6. remove patchset 7 review tag
> > 
> > v10 -> v11:
> > 1. rewrite patchset 5 to probe single-core SCP with the cluster list
> > 2. Also in patchset 5, move the pointer of mtk_scp object from the
> >     platform data property to the driver data property
> > 3. move the appearance of mtk_scp cluster property to patcheset 7
> > 
> > v9 -> v10:
> > 1. move the global mtk_scp list into the platform device driver data structure
> > 2. remove an unnecessary if() condition
> > 
> > v8 -> v9:
> > 1. initialize l1tcm_size/l1tcm_phys at patchset 05/11
> > 2. rewrite patchset 06/11 to unify the flow and remove hacks
> > 
> > v7 -> v8:
> > 1. update the node name of mt8192 asurada SCP rpmsg subnode
> > 2. squash register definitions into driver patches
> > 3. initialize local variables on the declaration at patch v8 06/11
> > 
> > v6 -> v7:
> > 1. merge the mtk_scp_cluster struct into the mtk_scp structure
> >     at the "Probe multi-core SCP" patch
> > 
> > v5 -> v6:
> > 1. move the mtk_scp_of_regs structure from mtk_common.h to mtk_scp.c
> > 2. rename the SCP core 0 label from 'scp' to 'scp_c0'
> > 
> > v4 -> v5:
> > 1. move resource release actions to the platform driver remove operation
> > 2. fix dual-core watchdog handling
> > 
> > v3 -> v4:
> > 1. change the representation of dual-core SCP in dts file and update SCP yaml
> > 2. rewrite SCP driver to reflect the change of dts node
> > 3. drop 'remove redundant call of rproc_boot for SCP' in v3 for further investigation
> > 
> > v2 -> v3:
> > 1. change the representation of dual-core SCP in dts file and update SCP yaml
> > 2. rewrite SCP driver to reflect the change of dts node
> > 3. add SCP core 1 node to mt8195.dtsi
> > 4. remove redundant call of rproc_boot for SCP
> > 5. refine IPI error message
> > 
> > v1 -> v2:
> > 1. update dt-binding property description
> > 2. remove kconfig for scp dual driver
> > 3. merge mtk_scp_dual.c and mtk_scp_subdev.c to mtk_scp.c
> > 
> > 
> > Tinghan Shen (11):
> >    dt-bindings: remoteproc: mediatek: Improve the rpmsg subnode
> >      definition
> >    arm64: dts: mediatek: Update the node name of SCP rpmsg subnode
> >    dt-bindings: remoteproc: mediatek: Support MT8195 dual-core SCP
> >    remoteproc: mediatek: Add MT8195 SCP core 1 operations
> >    remoteproc: mediatek: Introduce cluster on single-core SCP
> >    remoteproc: mediatek: Probe multi-core SCP
> >    remoteproc: mediatek: Add scp_boot_peers and scp_shutdown_peers
> >      operations
> >    remoteproc: mediatek: Setup MT8195 SCP core 1 SRAM offset
> >    remoteproc: mediatek: Handle MT8195 SCP core 1 watchdog timeout
> >    remoteproc: mediatek: Refine ipi handler error message
> >    arm64: dts: mediatek: mt8195: Add SCP 2nd core
> > 
> >   .../bindings/remoteproc/mtk,scp.yaml          | 176 +++++++-
> >   .../arm64/boot/dts/mediatek/mt8183-kukui.dtsi |   2 +-
> >   .../boot/dts/mediatek/mt8192-asurada.dtsi     |   2 +-
> >   .../boot/dts/mediatek/mt8195-cherry.dtsi      |   6 +-
> >   arch/arm64/boot/dts/mediatek/mt8195.dtsi      |  32 +-
> >   drivers/remoteproc/mtk_common.h               |  26 ++
> >   drivers/remoteproc/mtk_scp.c                  | 425 ++++++++++++++++--
> >   7 files changed, 594 insertions(+), 75 deletions(-)
> > 
>