IMXRT1170 DSI to HDMI Timing

[gokhannsahin]

Hi everyone,

I'm using embedded artists' imxrt1170 kits and an HDMI extension board to drive a 1280x480TFT.

However, in examples, there are the following options for HDMI except for my resolution. 

Unfortunately, I must use 1280x480 size, how can I determine these parameters for it?

Thank you.

#elif (DEMO_PANEL_HDMI_1024X768_60 == DEMO_PANEL)

#define DEMO_PANEL_WIDTH (1024)
#define DEMO_PANEL_HEIGHT (768)
#define DEMO_PANEL_NAME "HDMI_1024X768_60"

#define DEMO_HSW 136
#define DEMO_HBP 160
#define DEMO_HFP 24
#define DEMO_VSW 6
#define DEMO_VBP 29
#define DEMO_VFP 3

#define DEMO_VIDEO_FREQ_KHZ 260000
#define DEMO_PIXEL_CLOCK_DIV 4
#define DEMO_MIPI_DPY_REF_DIV 10

#elif (DEMO_PANEL_HDMI_1280X720_60 == DEMO_PANEL)

#define DEMO_PANEL_WIDTH (1280)
#define DEMO_PANEL_HEIGHT (720)
#define DEMO_PANEL_NAME "HDMI_1280X720_60"

#define DEMO_HSW 40
#define DEMO_HBP 220
#define DEMO_HFP 110
#define DEMO_VSW 5
#define DEMO_VBP 20
#define DEMO_VFP 5

#define DEMO_VIDEO_FREQ_KHZ 594000
#define DEMO_PIXEL_CLOCK_DIV 8
#define DEMO_MIPI_DPY_REF_DIV 22

[Omar_Anguiano]

Hello
Hope you are well.
Please refer to this application note in chapter 3: https://www.nxp.com/docs/en/application-note/AN12940.pdf

The parameters should be programmed to match your device specifications. E.g. modifying macros DEMO_PANEL_WIDTH and DEMO_PANEL_HEIGHT to match your screen resolution referring to the display specification to configure the rest of the macros.

If you have more questions do not hesitate to ask me. 
Best regards,
Omar