Could someone provide guidance on enabling DSI out on Nano M4?
I've added bindings to the device tree and the Linux kernel happily reports having DSI display panel, but the actual pins don't toggle.

Code: Select all

[    1.100277] ff968000.dsi.0 supply power not found, using dummy regulator
[    1.100902] panel-simple-dsi ff968000.dsi.0: GPIO lookup for consumer enable
[    1.100908] panel-simple-dsi ff968000.dsi.0: using device tree for GPIO lookup
[    1.100933] of_get_named_gpiod_flags: parsed 'enable-gpios' property of node '/dsi@ff968000/panel@0[0]' - status (0)
[    1.100956] panel-simple-dsi ff968000.dsi.0: GPIO lookup for consumer reset
[    1.100963] panel-simple-dsi ff968000.dsi.0: using device tree for GPIO lookup
[    1.100970] of_get_named_gpiod_flags: can't parse 'reset-gpios' property of node '/dsi@ff968000/panel@0[0]'
[    1.100977] of_get_named_gpiod_flags: can't parse 'reset-gpio' property of node '/dsi@ff968000/panel@0[0]'
[    1.100983] panel-simple-dsi ff968000.dsi.0: using lookup tables for GPIO lookup
[    1.100989] panel-simple-dsi ff968000.dsi.0: lookup for GPIO reset failed
[    1.528942] rockchip-drm display-subsystem: bound ff968000.dsi (ops 0xffffff8008bab158)
[    1.662644] dw-mipi-dsi ff968000.dsi: final DSI-Link bandwidth: 1064 x 4 Mbps
[    1.674957] dw-mipi-dsi ff968000.dsi: PHY is not locked
[    1.685283] dw-mipi-dsi ff968000.dsi: lane module is not in stop state


I'm expecting to see clock on the pins 25, 26 of the CSI-2/DSI connector

Thank you
Alex