Re: [PATCH v15 00/13] Add support for MT8195 SCP 2nd core

[Mathieu Poirier]

On Fri, Jul 21, 2023 at 10:41:19AM +0800, Tinghan Shen wrote:
> 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.
> 
> v15 -> v14:
> 1. Use the common SCP registers in struct mtk_scp_of_cluster instead of
>    copy it to struct mtk_scp at patchset 5 
> 2. Use platform_set_drvdata instead of platform_device_add_data at patchset 5 
> 3. Rename l2tcm_lock to cluster_lock at patchset 8
> 4. Check l2tcm_refcnt value before decreasing at patchset 8
> 5. Revise the commit message at patchset 11

I am done reviewing this set.  Checkpatch is giving a warning for patch 01/13,
something I would expect to have been dealt with after 15 iterations.  I will be
away for the next 3 weeks so no point in rushing another revision to sqeeze
in the v6.6 merge window.

Mathieu

> 
> v13 -> v14:
> 1. add review tag to patchset 1,6
> 2. exchange the order of sram power on and reset assert in
> mt8195_scp_c1_before_load at patchset 2
> 3. Use ERR_CAST in patchset 5
> 4. Re-write patchset 7 to remove dependency between core 0 and core 1 
> 5. Add patch set 10 to report watchdot timeout to all cores
> 
> 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@18000000 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 (13):
>   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: Extract SCP common registers
>   remoteproc: mediatek: Probe SCP cluster on single-core SCP
>   remoteproc: mediatek: Probe SCP cluster on multi-core SCP
>   remoteproc: mediatek: Remove dependency of MT8195 SCP L2TCM power
>     control on dual-core SCP
>   remoteproc: mediatek: Setup MT8195 SCP core 1 SRAM offset
>   remoteproc: mediatek: Handle MT8195 SCP core 1 watchdog timeout
>   remoteproc: mediatek: Report watchdog crash to all cores
>   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      |  34 +-
>  drivers/remoteproc/mtk_common.h               |  39 +-
>  drivers/remoteproc/mtk_scp.c                  | 534 ++++++++++++++----
>  drivers/remoteproc/mtk_scp_ipi.c              |   4 +-
>  8 files changed, 651 insertions(+), 146 deletions(-)
> 
> -- 
> 2.18.0
>