Using a Jetson Nano 4G module on a custom board with 1920 x RGB(3) x 1200 MIPI DSI (Video Mode Only) display. The display backlight turns on when booting and stays on. The display is always blank. When dumping the registers it reports “DSI controller suspended”. And lots of warnings print when trying to disable blank. The dmesg shows “tegradc tegradc.0: blank - powerdown” over and over again. See below for logs and device tree. During boot up DSI_D1 pins toggle for a short time, but do not toggle after boot up. How can I get something to show on the display?
boot_log.txt (50.8 KB)
regs_log.txt (19.6 KB)
device_tree_1.txt (905 Bytes)
device_tree_2.txt (10.9 KB)
It also seems the “pll_d_out0” req_rate doesn’t match the actual rate in the clk_summary.
rate = 9995947
req_rate = 163200000
But in the boot log pclk seems to match the device tree and is in the required range of the display.
[ 1.428886] tegradc tegradc.0: nominal-pclk:148500000 parent:148500000 div:1.0 pclk:148500000 147015000~161865000