From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sowjanya Komatineni Subject: Re: [RFC PATCH v3 00/18] Support for Tegra video capture from external sensor Date: Fri, 17 Jul 2020 09:34:43 -0700 Message-ID: References: <1594786855-26506-1-git-send-email-skomatineni@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: Content-Language: en-US Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Hans Verkuil , thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, jonathanh-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, frankc-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, sakari.ailus-X3B1VOXEql0@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, helen.koike-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org Cc: digetx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, sboyd-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org, linux-media-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-tegra@vger.kernel.org On 7/17/20 3:54 AM, Hans Verkuil wrote: > Hi Sowjanya, > > On 15/07/2020 06:20, Sowjanya Komatineni wrote: >> This series adds support for video capture from external camera sensor t= o >> Tegra video driver. >> >> Jetson TX1 has camera expansion connector and supports custom camera mod= ule >> designed as per TX1 design specification. >> >> This series also enables camera capture support for Jetson Nano which ha= s >> Raspberry PI camera header. >> >> This series is tested with IMX219 camera sensor. >> >> This series include, >> >> VI I2C related fixes >> - Camera sensor programming happens through VI I2C which is on host1x bu= s. >> - These patches includes device tree and I2C driver fixes for VI I2C. >> >> Tegra video driver updates >> - TPG Vs Non-TPG based on Kconfig >> - Support for external sensor video capture based on device graph from D= T. >> - Support for selection ioctl operations >> - Tegra MIPI CSI pads calibration >> - CSI T-CLK and T-HS settle time computation based on clock rates. >> >> Host1x driver updates >> - Adds API to allow creating mipi device for specific device node. >> - Splits MIPI pads calibrate start and waiting for calibration to be don= e. >> >> Device tree updates >> - Adds camera connector 2V8, 1V8, 1V2 regulator supplies to Jetson TX1 D= T. >> - Enabled VI and CSI support in Jetson Nano DT. > I'm doing a bit of stress testing with: > > while true; do v4l2-ctl --stream-mmap --stream-count=3D1; done > > and I see that the imx274 has often streaming failures: > > [ 172.025144] IMX274 8-001a: s_stream failed > [ 179.025192] IMX274 8-001a: imx274_write_mbreg : i2c bulk write failed,= 3132 =3D 870 (2 bytes) > [ 179.033575] IMX274 8-001a: s_stream failed > [ 226.525378] IMX274 8-001a: imx274_write_mbreg : i2c bulk write failed,= 3130 =3D 878 (2 bytes) > [ 226.533761] IMX274 8-001a: s_stream failed > [ 227.029325] IMX274 8-001a: imx274_write_mbreg : i2c bulk write failed,= 30f6 =3D 107 (2 bytes) > [ 227.037758] IMX274 8-001a: s_stream failed > [ 247.025218] IMX274 8-001a: imx274_write_mbreg : i2c bulk write failed,= 30f6 =3D 107 (2 bytes) > [ 247.033658] IMX274 8-001a: s_stream failed > [ 293.025517] IMX274 8-001a: s_stream failed > [ 309.024727] IMX274 8-001a: imx274_write_mbreg : i2c bulk write failed,= 30e0 =3D 0 (2 bytes) > [ 309.032969] IMX274 8-001a: s_stream failed > [ 309.529506] IMX274 8-001a: imx274_write_mbreg : i2c bulk write failed,= 30f8 =3D 11d2 (3 bytes) > [ 309.538103] IMX274 8-001a: imx274_set_frame_length error =3D -121 > [ 309.544102] IMX274 8-001a: imx274_set_frame_interval error =3D -121 > [ 309.550243] IMX274 8-001a: s_stream failed > [ 314.025561] IMX274 8-001a: s_stream failed > [ 329.025586] IMX274 8-001a: s_stream failed > [ 340.529567] IMX274 8-001a: imx274_write_mbreg : i2c bulk write failed,= 303a =3D f0c (2 bytes) > [ 340.538009] IMX274 8-001a: s_stream failed > [ 347.525627] IMX274 8-001a: imx274_write_mbreg : i2c bulk write failed,= 30f6 =3D 107 (2 bytes) > [ 347.534008] IMX274 8-001a: s_stream failed > [ 365.033640] IMX274 8-001a: s_stream failed > [ 437.525788] IMX274 8-001a: imx274_write_mbreg : i2c bulk write failed,= 3038 =3D c (2 bytes) > [ 437.533997] IMX274 8-001a: s_stream failed > [ 456.029780] IMX274 8-001a: s_stream failed > [ 472.025862] IMX274 8-001a: s_stream failed > [ 498.025861] IMX274 8-001a: s_stream failed > [ 500.025905] IMX274 8-001a: s_stream failed > > where v4l2-ctl returns: > > VIDIOC_STREAMON returned -1 (Remote I/O error) > > I don't see this with the imx219. > > I also see this occasionally: > > [Fri Jul 17 12:51:42 2020] video4linux video1: failed to run capture star= t kthread: -4 > > Something is not stable here. > > Regards, > > Hans Hi Hans, Running the same single frame continuous loop for more than 2 hours now=20 and I don't see any failure. Above failure shows i2c bulk writes to IMX274 failure due to which=20 s_stream also failed. Not sure if its due to i2c mux in the path to sensor on your module=20 causing some issue when there is more i2c write traffic as we are doing=20 single stream in continuous loop. Also IMX219 does not show on your side=20 so something specific to IMX274 setup probably. Regarding kthread_run failure where kthread_run() returned -EINTR during=20 capture start thread, I always see this happen at the point of stopping=20 the continuous single stream while loop by pressing ctrl+c after few=20 loops of execution. while true; do v4l2-ctl --stream-mmap --stream-count=3D1; done when we stop loop with ctrl+c, v4l2-ctl terminates but loop does not=20 terminate immediately and probably SIGKILLed=C2=A0 is seen prior to complet= e. Using below can help to terminate loop as well when we stop ctrl-c and=20 with this I don't see any repro of EINTR error from kthread_run when run=20 in infinite loop. while true; do ./v4l2-ctl --stream-mmap --stream-count=3D1 || break; done >> >> Delta between patch versions: >> >> [v3]: Includes v2 feedback >> - Uses separate helper function for retrieving remote csi subdevice >> and source subdevice. >> - Added check for presence of subdevice ops set/get_selection >> - dropped vb2_queue_release from driver and using >> vb2_video_unregister_device instead of video_unregister_device. >> - video device register should happen in the last after all video >> device related setup is done in the driver. This is being addressed >> in below RFC patch. Once proper implementation of this is available >> will update Tegra video driver to use split APIs and do all setup >> prior to device register. Added this as TODO in the driver. >> https://www.spinics.net/lists/linux-media/msg172761.html >> >> Note: >> Patch-0012 has compilation dependency on >> https://patchwork.kernel.org/patch/11659521/ >> >> >> [v2]: Includes below changes based on v1 feedback >> - dt-binding document and the driver update for device graph to use >> separate ports for sink endpoint and source endpoint for csi. >> - Use data-lanes endpoint property for csi. >> - Update tegra_mipi_request() to take device node pointer argument >> rather than adding extra API. >> - Remove checking for clk pointer before clk_disable. >> >> >> Sowjanya Komatineni (18): >> dt-bindings: i2c: tegra: Document Tegra210 VI I2C clocks and >> power-domains >> arm64: tegra: Add missing clocks and power-domains to Tegra210 VI I2C >> i2c: tegra: Don't mark VI I2C as IRQ safe runtime PM >> i2c: tegra: Remove NULL pointer check before >> clk_enable/disable/prepare/unprepare >> i2c: tegra: Fix the error path in tegra_i2c_runtime_resume >> i2c: tegra: Fix runtime resume to re-init VI I2C >> i2c: tegra: Avoid tegra_i2c_init_dma() for Tegra210 vi i2c >> media: tegra-video: Fix channel format alignment >> media: tegra-video: Enable TPG based on kernel config >> media: tegra-video: Update format lookup to offset based >> dt-bindings: tegra: Update VI and CSI bindings with port info >> media: tegra-video: Add support for external sensor capture >> media: tegra-video: Add support for selection ioctl ops >> gpu: host1x: mipi: Update tegra_mipi_request() to be node based >> gpu: host1x: mipi: Use readl_relaxed_poll_timeout in tegra_mipi_wait >> gpu: host1x: mipi: Split tegra_mipi_calibrate and tegra_mipi_wait >> media: tegra-video: Add CSI MIPI pads calibration >> media: tegra-video: Compute settle times based on the clock rate >> >> .../display/tegra/nvidia,tegra20-host1x.txt | 92 ++- >> .../devicetree/bindings/i2c/nvidia,tegra20-i2c.txt | 19 +- >> arch/arm64/boot/dts/nvidia/tegra210.dtsi | 6 + >> drivers/gpu/drm/tegra/dsi.c | 9 +- >> drivers/gpu/host1x/mipi.c | 37 +- >> drivers/i2c/busses/i2c-tegra.c | 101 +-- >> drivers/staging/media/tegra-video/Kconfig | 7 + >> drivers/staging/media/tegra-video/csi.c | 247 ++++++- >> drivers/staging/media/tegra-video/csi.h | 8 + >> drivers/staging/media/tegra-video/tegra210.c | 25 +- >> drivers/staging/media/tegra-video/vi.c | 793 +++++++++++++= ++++++-- >> drivers/staging/media/tegra-video/vi.h | 25 +- >> drivers/staging/media/tegra-video/video.c | 23 +- >> include/linux/host1x.h | 4 +- >> 14 files changed, 1242 insertions(+), 154 deletions(-) >>