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SubjectRe: [PATCH v2 00/18] CSI2RX support on J721E
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Hi Pratyush,

On 26/05/2021 18:22, Pratyush Yadav wrote:
> Hi,
>
> This series adds support for CSI2 capture on J721E. It includes some
> fixes to the Cadence CSI2RX driver, adds Rx support to Cadence DPHY
> driver, and finally adds the TI CSI2RX wrapper driver.
>
> Tested on TI's J721E with OV5640 sensor.

I also see this after a few captures:

[ 84.115503] ------------[ cut here ]------------
[ 84.120144] DMA-API: ti-udma 31150000.dma-controller: mapping sg segment longer than device claims to support [len=1900544] [max=65536]
[ 84.132376] WARNING: CPU: 1 PID: 594 at kernel/dma/debug.c:1172 debug_dma_map_sg+0x304/0x390
[ 84.140804] Modules linked in: ov5640 ti_cal j721e_csi2rx cdns_csi2rx cdns_dphy v4l2_fwnode tidss ti_tfp410 tc358767 display_connector cdns_mhdp8546 panel_simple drm_kms_helper d
rm drm_panel_orientation_quirks cfbfillrect cfbimgblt cfbcopyarea phy_j721e_wiz phy_cadence_torrent
[ 84.165298] CPU: 1 PID: 594 Comm: cam-mplex.py Not tainted 5.13.0-rc1-00206-g98bb91e95a28-dirty #5
[ 84.174236] Hardware name: Texas Instruments K3 J721E SoC (DT)
[ 84.180051] pstate: 60000005 (nZCv daif -PAN -UAO -TCO BTYPE=--)
[ 84.186041] pc : debug_dma_map_sg+0x304/0x390
[ 84.190383] lr : debug_dma_map_sg+0x304/0x390
[ 84.194725] sp : ffff800014d0f730
[ 84.198026] x29: ffff800014d0f730 x28: ffff000801544680 x27: ffffffffffffffff
[ 84.205148] x26: 0000000000000000 x25: 0000000000000002 x24: 0000000000000001
[ 84.212269] x23: ffff80001163abe0 x22: 0000000000000000 x21: 0000000000000001
[ 84.219390] x20: ffff000801fa3010 x19: ffff0008075c7580 x18: 0000000000000000
[ 84.226510] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000030
[ 84.233630] x14: 6e61687420726567 x13: 6e6f6c20746e656d x12: 7420736d69616c63
[ 84.240751] x11: 2065636976656420 x10: ffff8000116b18f8 x9 : ffff8000100eb920
[ 84.247871] x8 : ffff8000116598f8 x7 : ffff8000116b18f8 x6 : 0000000000000001
[ 84.254991] x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000
[ 84.262111] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0008066f8000
[ 84.269230] Call trace:
[ 84.271665] debug_dma_map_sg+0x304/0x390
[ 84.275660] dma_map_sg_attrs+0x70/0xb0
[ 84.279486] drm_gem_map_dma_buf+0x6c/0xf0 [drm]
[ 84.284177] __map_dma_buf+0x28/0x80
[ 84.287742] dma_buf_map_attachment+0xe4/0x200
[ 84.292172] vb2_dc_map_dmabuf+0x3c/0x150
[ 84.296171] __prepare_dmabuf+0x1dc/0x514
[ 84.300168] __buf_prepare+0x1a0/0x25c
[ 84.303903] vb2_core_qbuf+0x3d4/0x72c
[ 84.307638] vb2_qbuf+0x9c/0xf4
[ 84.310767] vb2_ioctl_qbuf+0x68/0x7c
[ 84.314416] v4l_qbuf+0x54/0x70
[ 84.317545] __video_do_ioctl+0x194/0x400
[ 84.321541] video_usercopy+0x19c/0x910
[ 84.325362] video_ioctl2+0x24/0x40
[ 84.328837] v4l2_ioctl+0x4c/0x70
[ 84.332141] __arm64_sys_ioctl+0xb4/0xfc
[ 84.336053] invoke_syscall+0x50/0x120
[ 84.339791] el0_svc_common.constprop.0+0x68/0x104
[ 84.344569] do_el0_svc+0x30/0x9c
[ 84.347872] el0_svc+0x2c/0x54
[ 84.350916] el0_sync_handler+0x1a8/0x1ac
[ 84.354911] el0_sync+0x198/0x1c0
[ 84.358215] irq event stamp: 0
[ 84.361256] hardirqs last enabled at (0): [<0000000000000000>] 0x0
[ 84.367507] hardirqs last disabled at (0): [<ffff80001004fe2c>] copy_process+0x44c/0x1800
[ 84.375667] softirqs last enabled at (0): [<ffff80001004fe2c>] copy_process+0x44c/0x1800
[ 84.383824] softirqs last disabled at (0): [<0000000000000000>] 0x0
[ 84.390073] ---[ end trace af3448c784059129 ]---

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