How to set the 1.2/1.5 Gbps speed in the example source code?
As the datasheet, MIPI Display Serial Interface(MIPI DSI)
- 2 data lanes interface with up to 1.5 GHz bit rate clock.
I want to check it in the below example code(EVK example code).
How to set it?
NXP (1170/MCUEXPresso)Example code: (the attached file-MIMXRT1170-EVK\boards\evkmimxrt1170\driver_examples\csi\mipi_rgb\cm7/board.c )
Below source code show as 60MHz, but I want to change CLK for 1.2/1.5Gbps
<Below >====================================================
- CSI2 CLK 설정.
/* This clock should be equal or faster than the receive byte clock,
* D0_HS_BYTE_CLKD, from the RX DPHY. For this board, there are two
* data lanes, the MIPI CSI pixel format is 16-bit per pixel, the
* max resolution supported is 720*1280@30Hz, so the MIPI CSI2 clock
* should be faster than 720*1280*30 = 27.6MHz, choose 60MHz here.
*/
→ details show 60Mhz -> MIPI speed : 60Mhz ?
const clock_root_config_t csi2ClockConfig = {
.clockOff = false,
.mux = 5,
.div = 8,
};
→ .mux = 5 value, kCLOCK_CSI2_ClockRoot_MuxSysPll3Out(480Mhz) , div = 8... Is it right??.
Up means '480Mhz/div8 = 60Mhz' .. Is it right?
If it is right . How to set as " 1.2/1.5 Gbps clock speed"?
/* CSI2 */
kCLOCK_CSI2_ClockRoot_MuxOscRc48MDiv2 = 0U, /*!< CSI2 mux from MuxOscRc48MDiv2. */
kCLOCK_CSI2_ClockRoot_MuxOsc24MOut = 1U, /*!< CSI2 mux from MuxOsc24MOut. */
kCLOCK_CSI2_ClockRoot_MuxOscRc400M = 2U, /*!< CSI2 mux from MuxOscRc400M. */
kCLOCK_CSI2_ClockRoot_MuxOscRc16M = 3U, /*!< CSI2 mux from MuxOscRc16M. */
kCLOCK_CSI2_ClockRoot_MuxSysPll2Pfd2 = 4U, /*!< CSI2 mux from MuxSysPll2Pfd2. */
kCLOCK_CSI2_ClockRoot_MuxSysPll3Out = 5U, /*!< CSI2 mux from MuxSysPll3Out. */
kCLOCK_CSI2_ClockRoot_MuxSysPll2Pfd0 = 6U, /*!< CSI2 mux from MuxSysPll2Pfd0. */
kCLOCK_CSI2_ClockRoot_MuxVideoPllOut = 7U, /*!< CSI2 mux from MuxVideoPllOut. */
