Based on tag: next-20241119, linux-next/master Refer to the discussion in the following link: https://lore.kernel.org/all/CAFGrd9qZhObQXvm2_abqaX83xMLqxjQETB2=wXpobDWU1CnvkA@xxxxxxxxxxxxxx/ https://lore.kernel.org/all/CAPDyKFpokXV2gJDgowbixTvOH_5VL3B5H8eyhP+KJ5Fasm2rFg@xxxxxxxxxxxxxx/ SMI clamp and reset operations should be implemented in SMI driver instead of PM driver. When we enable/disable power domain, the SMI LARBs linked to this power domain could be affected by the bus glitch. To avoid this issue, SMI need to apply clamp and reset opereations. This patch mainly add these functions: 1) Register genpd callback for SMI LARBs and handle this power domain status change in SMI driver. 2) Add bindings to support SMI Sub Common for MT8188. 3) Add bindings to support SMI larbs reset opearation Changes v2: - According to previous discussions in v1, divided these four patches into two topic separately - Modify the description for 'resets' in binding - Add const value 'larb' for 'reset-names' in binding - Modify requirement for 'resets' and 'reset-names' in binding - Delete 'mediatek,smi-sub-comm' in binding - Delete 'mediatek,smi-sub-comm-in-portid' in binding - Modify the example in binding - Add 'mtk_smi_larb_clamp_port_mt8188' definition in SMI driver - Change the way to parse the 'resets' in driver - Change label from 'err_pm_disable' to 'err_link_remove' v1: https://patchwork.kernel.org/project/linux-mediatek/patch/20240821082845.11792-3-friday.yang@xxxxxxxxxxxx/ https://patchwork.kernel.org/project/linux-mediatek/patch/20240821082845.11792-4-friday.yang@xxxxxxxxxxxx/ friday.yang (2): dt-bindings: reset: mediatek: Add mt8188 SMI reset control binding reset: mediatek: Add reset control driver for SMI .../bindings/reset/mediatek,smi-reset.yaml | 53 ++++++ drivers/reset/Kconfig | 9 + drivers/reset/Makefile | 1 + drivers/reset/reset-mediatek-smi.c | 156 ++++++++++++++++++ include/dt-bindings/reset/mt8188-resets.h | 11 ++ 5 files changed, 230 insertions(+) create mode 100644 Documentation/devicetree/bindings/reset/mediatek,smi-reset.yaml create mode 100644 drivers/reset/reset-mediatek-smi.c -- 2.46.0
