Tx2 Dsi Display/Mipi bridge error

[murali.krishnan]

Pls refer to the below link for detailed question we posted earlier.,
we are waiting to get an answer. which is pending for a while.

DSI display: does tegra_dsi_read_data() work?

Hi, What we want to achieve is prior to sending the init-cmd, read the display IDs (0xDA 0xDB 0xDC) To that end we are using tegra_dsi_read_data() The display works fine in video mode after init-cmd is sent on this tx2 platform Reading panel registers on TX2 results in FIFO being empty and a 218ms timeout with nvhost_syncpt_wait_timeout_ext() the display responds superfast (~400ns) after IMM_BTA is given, we measured this with logical analyzer on the mipi lane. However this response ends wi…