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) Add SMI reset controller driver to implement SMI LARBs reset opereations. 2) Add bindings for describing the reset controller. Changes v2: - According to previous discussions in v1, divided these four patches into two topic separately - Change from 'mediatek,larb-rst-syscon' to 'mediatek,larb-rst' - Modify the description for 'mediatek,larb-rst' - Modify the description for '#reset-cells' - Change compatible to 'mediatek,mt8188-smi-reset' - Add COMPILE_TEST for RESET_MTK_SMI in Kconfig - Drop label in binding's example - Use MMIO instead of regmap in reset controller driver v1: https://patchwork.kernel.org/project/linux-mediatek/patch/20240821082845.11792-2-friday.yang@xxxxxxxxxxxx/ https://patchwork.kernel.org/project/linux-mediatek/patch/20240821082845.11792-5-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
