[PATCH v17 00/14] Add support for MT8195 SCP 2nd core

Tinghan Shen
2023-09-01T08:10:18Z

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.

v16 -> v17:
1. add a comment in scp_add_multi_core() at patchset 8

v15 -> v16:
1. fix the checkpatch warning at patchset 1
2. move changes on scp_probe() to the new added patchset 6
3. revise platform_set_drvdata() at patchset 8
4. fix commit message at patchset 9

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

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 (14):
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: Revise SCP rproc initialization flow for
multi-core SCP
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 | 539 ++++++++++++++----
drivers/remoteproc/mtk_scp_ipi.c | 4 +-
8 files changed, 656 insertions(+), 146 deletions(-)

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2.18.0