[PATCH v4 00/12] Add support for MT8195 SCP 2nd core

[Tinghan Shen]

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.

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 (12):
  dt-bindings: remoteproc: mediatek: Improve the rpmsg subnode
    definition
  arm64: dts: mediatek: mt8183-kukui: Update the node name of SCP rpmsg
    subnode
  dt-bindings: remoteproc: mediatek: Support MT8195 dual-core SCP
  remoteproc: mediatek: Add SCP core 1 register definitions
  remoteproc: mediatek: Add MT8195 SCP core 1 operations
  remoteproc: mediatek: Extract remoteproc initialization flow
  remoteproc: mediatek: Probe multi-core SCP
  remoteproc: mediatek: Control SCP core 1 by rproc subdevice
  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/mt8195-cherry.dtsi      |   4 +
 arch/arm64/boot/dts/mediatek/mt8195.dtsi      |  30 +-
 drivers/remoteproc/mtk_common.h               |  47 +++
 drivers/remoteproc/mtk_scp.c                  | 379 ++++++++++++++++--
 6 files changed, 580 insertions(+), 58 deletions(-)

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2.18.0