SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
This section describes the DISPC integration in the device (see Figure 11-41). For complete details about clocks and resets, see Section 11.1, Display Subsystem Overview.
Table 11-57 and Table 11-58 list the integration attributes and clock and resets, respectively.
Module Instance | Attributes | |
Power Domain | Interconnect | |
DISPC | PD_DSS | L3_MAIN for data transfer and configuration |
Clocks | ||||
---|---|---|---|---|
Module
Instance |
Destination Signal Name | Source Signal Name | Source | Description |
DISPC | F_CLK | DSS_CLK DPLL_DSI1_A_CLK1 DPLL_DSI1_B_CLK1 DPLL_DSI1_C_CLK1 DPLL_HDMI_CLK1 |
PRCM DPLL_VIDEO1 DPLL_VIDEO2 DPLL_HDMI |
Functional clock for the DISPC logic. For the multiplexing description, see Section 11.1.2.1, Display Subsystem Clocks. |
LCD1_CLK | DSS_CLK DPLL_DSI1_A_CLK1 |
DPLL_VIDEO1 DPLL_HDMI |
Clock used to generate the divided pixel clock for the primary LCD interface. For the multiplexing description, see Section 11.1.2.1, Display Subsystem Clocks. | |
LCD2_CLK | DSS_CLK DPLL_DSI1_B_CLK1 |
PRCM DPLL_VIDEO1 DPLL_VIDEO2 DPLL_HDMI |
Clock used to generate the divided pixel clock for the secondary LCD interface. For the multiplexing description, see Section 11.1.2.1, Display Subsystem Clocks. | |
LCD3_CLK | DSS_CLK DPLL_DSI1_C_CLK1 |
DPLL_VIDEO1 DPLL_VIDEO2 DPLL_HDMI |
Clock used to generate the divided pixel clock for the third LCD interface. For the multiplexing description, see Section 11.1.2.1, Display Subsystem Clocks. | |
DISPC_TV_FCLK | F_CLK DPLL_HDMI_CLK1 |
DSS DPLL_HDMI |
TV functional clock (this is either the F_CLK or a clock driven from the DPLL_HDMI). For the multiplexing description, see Section 11.1.2.1, Display Subsystem Clocks. | |
DISPC_TV_CLK | DSS_HDMI_PCLK | HDMI | Pixel clock provided by the HDMI module. For the multiplexing description, see Section 11.1.2.1, Display Subsystem Clocks. | |
Resets | ||||
Module
Instance |
Destination Signal Name | Source Signal Name | Source | Description |
DISPC | DISPC_RST | DSS_RST | PRCM | Hardware reset is coming from the PRCM module or through a software reset performed at the DSS level. For the tree reset description, see Section 11.1.2, Display Subsystem Integration. |
NOTE:
The DSS_RST signal is provided to the entire display subsystem. When inside the display subsystem boundaries, it is named DISPSS_RST, which on its end is provided to the DISPC and is named DISPC_RST. |
Interrupt Requests | ||||
Module Instance | Source Signal Name | Destination IRQ_CROSSBAR Input | Default Mapping | Description |
DISPC | DISPC_IRQ | IRQ_CROSSBAR_20 | MPU_IRQ_25 | DISPC interrupt requests. |
DSP1_IRQ_58 | ||||
DSP2_IRQ_58 | ||||
IPU1_IRQ_26 | ||||
IPU2_IRQ_26 | ||||
DMA Requests | ||||
Module Instance | Source Signal Name | Destination DMA_CROSSBAR Input | Default Mapping | Description |
DISPC | DISPC_DREQ | DMA_CROSSBAR_6 | DMA_EDMA_DREQ_5 | The line trigger signal to synchronize a memory-to-memory logical channel in the device DMA is generated by the DISPC IP. |
DMA_SYSTEM_DREQ_5 |
The “Default Mapping”
column in Table 11-59
DISPC Hardware Requests shows the default mapping of module IRQ and DREQ
source signals. These module IRQ and DREQ source signals can also be mapped to
other lines of each device Interrupt or DMA controller through the IRQ_CROSSBAR
and DMA_CROSSBAR modules, respectively.
For more
information about the IRQ_CROSSBAR module, see IRQ_CROSSBAR Module Functional
Description, in Control Module.
For
more information about the DMA_CROSSBAR module, see DMA_CROSSBAR Module
Functional Description, in Control Module.
For more information about the device interrupt
controllers, see Interrupt Controllers.
For more information about the device DMA_SYSTEM module, see System
DMA.
For more information about
the device EDMA module, see Enhanced DMA.