SPRUJ28E November 2021 – September 2024 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
The DSI controller will always require the DPHY and data path configuration to be set after power up and any hard reset. The minimum sequence should define the data path lane configuration; mappings, available lanes, DPHY power, resets and lane swap. All these register values should be set before the DSI controller is enabled for functional operation.
The DSI registers are accessed through the APB interface. The programming sequence for command, video and controller configuration must follow a sequence of accesses to ensure the clock gate control updates the internal nodes before the link is enabled.
All DSI_VID_xxx registers must be programmed, if required, before the write to the DSI_VID_MAIN_CTL register.
All DSI_MCTL_DPHY_xxx registers must be programmed, if required, before the write to the DSI_MCTL_MAIN_DATA_CTL register to set the [0] LINK_EN bit.