root@j784s4-evm:~# v4l2-ctl -d /dev/video4 --stream-mmap --stream-count=1 &
[1] 1332
[  130.660961] videobuf2_common: [cap-00000000e79aa9e4] __setup_offsets: buffer 0, plane 0 offset 0x00000000
root@j784s4-evm:~# [  130.671056] videobuf2_common: [cap-00000000e79aa9e4] __setup_offsets: buffer 1, plane 0 offset 0x00008000
[  130.682637] videobuf2_common: [cap-00000000e79aa9e4] __setup_offsets: buffer 2, plane 0 offset 0x00010000
[  130.693574] videobuf2_common: [cap-00000000e79aa9e4] __setup_offsets: buffer 3, plane 0 offset 0x00018000
[  130.703160] videobuf2_common: [cap-00000000e79aa9e4] __vb2_queue_alloc: allocated 4 buffers, 1 plane(s) each
[  130.713153] videobuf2_common: [cap-00000000e79aa9e4] vb2_mmap: buffer 0, plane 0 successfully mapped
[  130.722314] videobuf2_common: [cap-00000000e79aa9e4] vb2_mmap: buffer 1, plane 0 successfully mapped
[  130.731469] videobuf2_common: [cap-00000000e79aa9e4] vb2_mmap: buffer 2, plane 0 successfully mapped
[  130.740657] videobuf2_common: [cap-00000000e79aa9e4] vb2_mmap: buffer 3, plane 0 successfully mapped
[  130.749802] videobuf2_common: [cap-00000000e79aa9e4] vb2_core_qbuf: qbuf of buffer 0 succeeded
[  130.758417] videobuf2_common: [cap-00000000e79aa9e4] vb2_core_qbuf: qbuf of buffer 1 succeeded
[  130.767026] videobuf2_common: [cap-00000000e79aa9e4] vb2_core_qbuf: qbuf of buffer 2 succeeded
[  130.775631] videobuf2_common: [cap-00000000e79aa9e4] vb2_core_qbuf: qbuf of buffer 3 succeeded
[  130.784242] ti_csi2rx_start_streaming
[  130.795402] __media_pipeline_start
[  130.798832] media_pipeline_populate ret=0
[  130.802837] ti_csi2rx_link_validate
[  130.806332] j721e-csi2rx 4500000.ticsi2rx: Link '4500000.ticsi2rx':1 -> '4500000.ticsi2rx context 0':0 is valid
[  130.816417] j721e-csi2rx 4500000.ticsi2rx: Link 'cdns_csi2rx.4504000.csi-bridge':1 -> '4500000.ticsi2rx':0 is valid
[  130.826852] j721e-csi2rx 4500000.ticsi2rx: Link 'rlc92402 3-0060':1 -> 'cdns_csi2rx.4504000.csi-bridge':0 is valid
[  130.837200] j721e-csi2rx 4500000.ticsi2rx: Link 'rlc90105 3-0042':1 -> 'rlc92402 3-0060':0 is valid
[  130.846240] ov01g_get_fmt.........
[  130.849631] j721e-csi2rx 4500000.ticsi2rx: Link 'ov01g10 7-0050':0 -> 'rlc90105 3-0042':0 is valid
[  130.858581] ti_csi2rx_link_validate
[  130.862057] j721e-csi2rx 4500000.ticsi2rx: Skipping validation as no format present on "4500000.ticsi2rx":2:0
[  130.871963] j721e-csi2rx 4500000.ticsi2rx: Link '4500000.ticsi2rx':2 -> '4500000.ticsi2rx context 1':0 is valid
[  130.882040] ti_csi2rx_link_validate
[  130.885522] j721e-csi2rx 4500000.ticsi2rx: Skipping validation as no format present on "4500000.ticsi2rx":3:0
[  130.895423] j721e-csi2rx 4500000.ticsi2rx: Link '4500000.ticsi2rx':3 -> '4500000.ticsi2rx context 2':0 is valid
[  130.905497] ti_csi2rx_link_validate
[  130.908980] j721e-csi2rx 4500000.ticsi2rx: Skipping validation as no format present on "4500000.ticsi2rx":4:0
[  130.918879] j721e-csi2rx 4500000.ticsi2rx: Link '4500000.ticsi2rx':4 -> '4500000.ticsi2rx context 3':0 is valid
[  130.928956] ti_csi2rx_link_validate
[  130.932443] j721e-csi2rx 4500000.ticsi2rx: Skipping validation as no format present on "4500000.ticsi2rx":5:0
[  130.942346] j721e-csi2rx 4500000.ticsi2rx: Link '4500000.ticsi2rx':5 -> '4500000.ticsi2rx context 4':0 is valid
[  130.952422] ti_csi2rx_link_validate
[  130.955903] j721e-csi2rx 4500000.ticsi2rx: Skipping validation as no format present on "4500000.ticsi2rx":6:0
[  130.965806] j721e-csi2rx 4500000.ticsi2rx: Link '4500000.ticsi2rx':6 -> '4500000.ticsi2rx context 5':0 is valid
[  130.975879] ti_csi2rx_link_validate
[  130.979361] j721e-csi2rx 4500000.ticsi2rx: Skipping validation as no format present on "4500000.ticsi2rx":7:0
[  130.989264] j721e-csi2rx 4500000.ticsi2rx: Link '4500000.ticsi2rx':7 -> '4500000.ticsi2rx context 6':0 is valid
[  130.999363] ti_csi2rx_link_validate
[  131.002863] j721e-csi2rx 4500000.ticsi2rx: Skipping validation as no format present on "4500000.ticsi2rx":8:0
[  131.012782] j721e-csi2rx 4500000.ticsi2rx: Link '4500000.ticsi2rx':8 -> '4500000.ticsi2rx context 7':0 is valid
[  131.022880] video_device_pipeline_start ret=0
[  131.027250] media_entity_remote_source_pad_unique
[  131.031961] ti_csi2rx_get_vc
[  131.034885] ti_csi2rx_dma_submit_pending
[  131.038812] ti_csi2rx_sd_enable_streams...
[  131.042902] csi2rx_enable_streams...
[  131.046478] csi2rx_start...
[  131.049343] v4l2_ctrl_g_ctrl
[  131.052234] csi2rx_configure_ext_dphy phy_configure
[  131.057124] cdns_dphy_rx_configure hs_clk_rate = 1000000000
[  131.062817] csi2rx_start ret=0
[  131.065865] ov01g10 7-0050: Streams enabled
[  131.070047] v4l2_subdev_enable_streams ret=0
[  131.074315] call_qop ret = 0
[  131.077185] videobuf2_common: [cap-00000000e79aa9e4] vb2_core_streamon: successful
[  131.084782] videobuf2_common: [cap-00000000e79aa9e4] __vb2_wait_for_done_vb: will sleep waiting for buffers

root@j784s4-evm:~# 
root@j784s4-evm:~# 
root@j784s4-evm:~# devmem2 0x04581000
/dev/mem opened.
Memory mapped at address 0xffff96216000.
Read at address  0x04581000 (0xffff96216000): 0x40800000
root@j784s4-evm:~# 
root@j784s4-evm:~# 
root@j784s4-evm:~# 
root@j784s4-evm:~# 
root@j784s4-evm:~# devmem2 0x04504048
/dev/mem opened.
Memory mapped at address 0xffff8995b000.
Read at address  0x04504048 (0xffff8995b048): 0x00333306
root@j784s4-evm:~#                   
root@j784s4-evm:~# 
root@j784s4-evm:~# 
root@j784s4-evm:~# devmem2 0x04504104
/dev/mem opened.
Memory mapped at address 0xffffa6b7b000.
Read at address  0x04504104 (0xffffa6b7b104): 0x80000111
root@j784s4-evm:~# 
root@j784s4-evm:~# 
root@j784s4-evm:~# 
root@j784s4-evm:~#