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SubjectRe: [PATCH v3 00/11] CSI2RX support on J721E
Date
Hi Pratyush,

On 24/06/2021 22:21, Pratyush Yadav wrote:
> Hi,
>
> This series adds support for CSI2 capture on J721E. It includes some
> fixes to the Cadence CSI2RX driver, adds runtime PM support to OV5640
> driver, and finally adds the TI CSI2RX wrapper driver.
>
> This series used to include the DPHY and DMA engine patches as well, but
> they have been split off to facilitate easier merging. Patch 3 is
> build-dependent on the DPHY series [0].
>
> The DMA engine patch [1] can go in any order since that is only a run
> time dependency. Things probably won't work without it but it will still
> build fine.
>
> Tested on TI's J721E with OV5640 sensor.

I applied these (csi-2 rx, phy, dma-engine) to linux-media/master, and added dts changes to add the csi2-rx. When sending the series, can you also push the branch you use for testing, as the posted patches do not include everything needed?

Here are some notes from quick tests:

Capture works, but the fps is ~28.98. I would expect it to be closer to 30. Are the clocks configured correctly?

When I load the modules, I get:

[ 237.322258] platform 4504000.csi-bridge: Fixing up cyclic dependency with 9-003c

I get a warning from DMA-API debug:

[ 298.774236] ------------[ cut here ]------------
[ 298.779109] DMA-API: ti-udma 31150000.dma-controller: mapping sg segment longer than device claims to support [len=1900544] [max=65536]
[ 298.791331] WARNING: CPU: 1 PID: 605 at kernel/dma/debug.c:1172 debug_dma_map_sg+0x304/0x390
[ 298.799764] Modules linked in: ov5640 j721e_csi2rx cdns_csi2rx cdns_dphy v4l2_fwnode v4l2_async tidss ti_tfp410 tc358767 display_connector cdns_mhdp8546 panel_simple
drm_kms_helper drm drm_panel_orientation_quirks cfbfillrect cfbimgblt cfbcopyarea phy_j721e_wiz phy_cadence_torrent
[ 298.824656] CPU: 1 PID: 605 Comm: cam-mplex.py Not tainted 5.13.0-rc4-00417-g3331992006e9 #3
[ 298.833079] Hardware name: Texas Instruments K3 J721E SoC (DT)
[ 298.838900] pstate: 60000005 (nZCv daif -PAN -UAO -TCO BTYPE=--)
[ 298.844895] pc : debug_dma_map_sg+0x304/0x390
[ 298.849245] lr : debug_dma_map_sg+0x304/0x390
[ 298.853593] sp : ffff800014dcf730
[ 298.856899] x29: ffff800014dcf730 x28: ffff00080154a880 x27: ffffffffffffffff
[ 298.864032] x26: 0000000000000000 x25: 0000000000000002 x24: 0000000000000001
[ 298.871164] x23: ffff80001163abe0 x22: 0000000000000000 x21: 0000000000000001
[ 298.878295] x20: ffff000801fa3010 x19: ffff000807585300 x18: 0000000000000000
[ 298.885426] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000030
[ 298.892558] x14: 6e61687420726567 x13: 6e6f6c20746e656d x12: ffff800011a91578
[ 298.899689] x11: 00000000000c0000 x10: ffff8000116b18f8 x9 : ffff8000100eabe0
[ 298.906820] x8 : ffff8000116598f8 x7 : ffff8000116b18f8 x6 : 0000000000000001
[ 298.913951] x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff800011260000
[ 298.921082] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff00080673b000
[ 298.928214] Call trace:
[ 298.930653] debug_dma_map_sg+0x304/0x390
[ 298.934655] dma_map_sg_attrs+0x70/0xb0
[ 298.938487] drm_gem_map_dma_buf+0x6c/0xf0 [drm]
[ 298.943185] __map_dma_buf+0x28/0x80
[ 298.946756] dma_buf_map_attachment+0xe4/0x220
[ 298.951191] vb2_dc_map_dmabuf+0x3c/0x150
[ 298.955194] __prepare_dmabuf+0x1dc/0x514
[ 298.959197] __buf_prepare+0x1a0/0x25c
[ 298.962938] vb2_core_qbuf+0x3d4/0x72c
[ 298.966679] vb2_qbuf+0x9c/0xf4
[ 298.969814] vb2_ioctl_qbuf+0x68/0x7c
[ 298.973468] v4l_qbuf+0x54/0x70
[ 298.976603] __video_do_ioctl+0x194/0x400
[ 298.980603] video_usercopy+0x374/0xa14
[ 298.984431] video_ioctl2+0x24/0x4c
[ 298.987912] v4l2_ioctl+0x4c/0x70
[ 298.991222] __arm64_sys_ioctl+0xb4/0xfc
[ 298.995138] invoke_syscall+0x50/0x120
[ 298.998885] el0_svc_common.constprop.0+0x68/0x104
[ 299.003667] do_el0_svc+0x30/0x9c
[ 299.006976] el0_svc+0x2c/0x54
[ 299.010025] el0_sync_handler+0x1a8/0x1ac
[ 299.014025] el0_sync+0x198/0x1c0
[ 299.017333] irq event stamp: 98582
[ 299.020727] hardirqs last enabled at (98581): [<ffff8000100ec2bc>] console_unlock+0x53c/0x6b4
[ 299.029325] hardirqs last disabled at (98582): [<ffff800010be4bd4>] el1_dbg+0x24/0xa0
[ 299.037144] softirqs last enabled at (98568): [<ffff800010010ba0>] __do_softirq+0x500/0x6bc
[ 299.045565] softirqs last disabled at (98413): [<ffff80001005d504>] __irq_exit_rcu+0x1d4/0x1e0
[ 299.054164] ---[ end trace bfe019acb2a9a04f ]---

I get a warning from media graph walk:

[ 299.066357] WARNING: CPU: 1 PID: 605 at drivers/media/mc/mc-entity.c:343 media_graph_walk_next+0x268/0x2cc
[ 299.076005] Modules linked in: ov5640 j721e_csi2rx cdns_csi2rx cdns_dphy v4l2_fwnode v4l2_async tidss ti_tfp410 tc358767 display_connector cdns_mhdp8546 panel_simple
drm_kms_helper drm drm_panel_orientation_quirks cfbfillrect cfbimgblt cfbcopyarea phy_j721e_wiz phy_cadence_torrent
[ 299.100889] CPU: 1 PID: 605 Comm: cam-mplex.py Tainted: G W 5.13.0-rc4-00417-g3331992006e9 #3
[ 299.110698] Hardware name: Texas Instruments K3 J721E SoC (DT)
[ 299.116518] pstate: 60000005 (nZCv daif -PAN -UAO -TCO BTYPE=--)
[ 299.122513] pc : media_graph_walk_next+0x268/0x2cc
[ 299.127295] lr : media_graph_walk_next+0x264/0x2cc
[ 299.132076] sp : ffff800014dcfa40
[ 299.135382] x29: ffff800014dcfa40 x28: 0000000000000000 x27: 0000000040045612
[ 299.142514] x26: 0000000000000001 x25: ffff800010d890f0 x24: ffff0008055c8148
[ 299.149645] x23: ffff0008055c8148 x22: ffff80001182bc40 x21: ffff80001163e2e8
[ 299.156776] x20: ffff80001182bbd0 x19: ffff0008055c8cb8 x18: 0000000000000000
[ 299.163907] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000028
[ 299.171037] x14: 0000000000000002 x13: 0000000000007e6f x12: 0000000000000002
[ 299.178169] x11: 0000000000040464 x10: 00000000916d3a5c x9 : ffff8000093110c0
[ 299.185301] x8 : ffff000807583d88 x7 : 0000000000000000 x6 : ffff00080673b900
[ 299.192431] x5 : 000000000000000a x4 : ffff000807583d80 x3 : ffff800011260000
[ 299.199562] x2 : 00000000000000c0 x1 : 00000000000000c0 x0 : 0000000000000000
[ 299.206693] Call trace:
[ 299.209133] media_graph_walk_next+0x268/0x2cc
[ 299.213568] ti_csi2rx_start_streaming+0xe0/0x5c8 [j721e_csi2rx]
[ 299.219569] vb2_start_streaming+0x70/0x160
[ 299.223745] vb2_core_streamon+0x9c/0x1a0
[ 299.227745] vb2_ioctl_streamon+0x68/0xbc
[ 299.231747] v4l_streamon+0x30/0x40
[ 299.235230] __video_do_ioctl+0x194/0x400
[ 299.239230] video_usercopy+0x374/0xa14
[ 299.243058] video_ioctl2+0x24/0x4c
[ 299.246539] v4l2_ioctl+0x4c/0x70
[ 299.249847] __arm64_sys_ioctl+0xb4/0xfc
[ 299.253764] invoke_syscall+0x50/0x120
[ 299.257508] el0_svc_common.constprop.0+0x68/0x104
[ 299.262291] do_el0_svc+0x30/0x9c
[ 299.265599] el0_svc+0x2c/0x54
[ 299.268648] el0_sync_handler+0x1a8/0x1ac
[ 299.272647] el0_sync+0x198/0x1c0
[ 299.275956] irq event stamp: 98754
[ 299.279349] hardirqs last enabled at (98753): [<ffff800010bf216c>] _raw_spin_unlock_irqrestore+0x9c/0xc0
[ 299.288900] hardirqs last disabled at (98754): [<ffff800010be4bd4>] el1_dbg+0x24/0xa0
[ 299.296716] softirqs last enabled at (98606): [<ffff800010010ba0>] __do_softirq+0x500/0x6bc
[ 299.305138] softirqs last disabled at (98585): [<ffff80001005d504>] __irq_exit_rcu+0x1d4/0x1e0

Unloading the modules gives me:

ERROR: Unhandled External Abort received on 0x80000001 from S-EL1
ERROR: exception reason=0 syndrome=0xbf000000
Unhandled Exception from EL1
x0 = 0x0000000000000000
x1 = 0xffff00080564c000
x2 = 0xffff800014314000
x3 = 0xffff800011260000
x4 = 0x0000000000000001
x5 = 0x0000000000000001
x6 = 0x0000000000000001
x7 = 0x0000000000000000
x8 = 0xffff8000118870c0
x9 = 0xffff800010bf2140
x10 = 0x000000008260a2b7
x11 = 0x00000000000c821c
x12 = 0xffff800011a91578
x13 = 0x0000000000008b8e
x14 = 0x0000000000000006
x15 = 0x0000000000000028
x16 = 0x0000000000000000
x17 = 0x0000000000000000
x18 = 0x00000000fffffffb
x19 = 0xffff00080634cc00
x20 = 0x0000000000000000
x21 = 0xffff0008051eed00
x22 = 0xffff00080555f010
x23 = 0xffff00080555f000
x24 = 0xffff8000092e0058
x25 = 0x0000000000000047
x26 = 0xffff8000116d71d8
x27 = 0xffff8000092e0350
x28 = 0xffff8000092e0148
x29 = 0xffff800014d2f850
x30 = 0xffff8000092b0430
scr_el3 = 0x000000000000073d
sctlr_el3 = 0x0000000030cd183f
cptr_el3 = 0x0000000000000000
tcr_el3 = 0x0000000080803520
daif = 0x00000000000002c0
mair_el3 = 0x00000000004404ff
spsr_el3 = 0x0000000000000005
elr_el3 = 0xffff8000092b0440
ttbr0_el3 = 0x0000000070010b00
esr_el3 = 0x00000000bf000000
far_el3 = 0x0000000000000000
spsr_el1 = 0x0000000060000005
elr_el1 = 0xffff800010be5e10
spsr_abt = 0x0000000000000000
spsr_und = 0x0000000000000000
spsr_irq = 0x0000000000000000
spsr_fiq = 0x0000000000000000
sctlr_el1 = 0x0000000034d4d91d
actlr_el1 = 0x0000000000000000
cpacr_el1 = 0x0000000000300000
csselr_el1 = 0x0000000000000000
sp_el1 = 0xffff800014d2f850
esr_el1 = 0x0000000056000000
ttbr0_el1 = 0x00000008826e4a00
ttbr1_el1 = 0x076a000083180000
mair_el1 = 0x000c0400bb44ffff
amair_el1 = 0x0000000000000000
tcr_el1 = 0x00000034f5d07590
tpidr_el1 = 0xffff80086e790000
tpidr_el0 = 0x0000ffff980d6920
tpidrro_el0 = 0x0000000000000000
par_el1 = 0x0000000000000000
mpidr_el1 = 0x0000000080000001
afsr0_el1 = 0x0000000000000000
afsr1_el1 = 0x0000000000000000
contextidr_el1 = 0x0000000000000000
vbar_el1 = 0xffff800010011000
cntp_ctl_el0 = 0x0000000000000005
cntp_cval_el0 = 0x000000294b786efd
cntv_ctl_el0 = 0x0000000000000000
cntv_cval_el0 = 0x0000000000000000
cntkctl_el1 = 0x00000000000000d6
sp_el0 = 0x000000007000abd0
isr_el1 = 0x0000000000000040
dacr32_el2 = 0x0000000000000000
ifsr32_el2 = 0x0000000000000000
cpuectlr_el1 = 0x0000001b00000040
cpumerrsr_el1 = 0x0000000000000000
l2merrsr_el1 = 0x0000000000000000

Tomi


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