user/sven/linux.git/drivers/media/platform/nxp, branch master

media: imx8mq-mipi-csi2: Add support for i.MX8ULP

2026-03-24T21:14:45Z

The CSI-2 receiver in i.MX8ULP is almost same as i.MX8QXP/QM except clocks and resets, so add compatible string for i.MX8ULP to handle the difference and reuse platform data of i.MX8QXP/QM. Reviewed-by: Frank Li Reviewed-by: Laurent Pinchart Signed-off-by: Guoniu Zhou Link: https://patch.msgid.link/20251205-csi2_imx8ulp-v10-4-190cdadb20a3@nxp.com Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil

media: imx8mq-mipi-csi2: Explicitly release reset

2026-03-24T21:14:44Z

Call reset_control_deassert() to explicitly release reset to make sure reset bits are cleared since platform like i.MX8ULP can't clear reset bits automatically. Reviewed-by: Frank Li Reviewed-by: Laurent Pinchart Signed-off-by: Guoniu Zhou Link: https://patch.msgid.link/20251205-csi2_imx8ulp-v10-3-190cdadb20a3@nxp.com Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil

media: imx8mq-mipi-csi2: Use devm_clk_bulk_get_all() to fetch clocks

2026-03-24T21:14:44Z

Use devm_clk_bulk_get_all() helper to simplify clock handle code. No functional changes intended. Reviewed-by: Frank Li Signed-off-by: Guoniu Zhou Reviewed-by: Laurent Pinchart Link: https://patch.msgid.link/20251205-csi2_imx8ulp-v10-2-190cdadb20a3@nxp.com Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil

media: nxp: imx8-isi: Add ISI support for i.MX95

2026-03-24T21:14:44Z

The ISI module on i.MX95 supports up to eight channels and four link sources to obtain the image data for processing in its pipelines. It can process up to eight image sources at the same time. Add ISI basic functions support for i.MX95. Reviewed-by: Frank Li Signed-off-by: Guoniu Zhou Reviewed-by: Laurent Pinchart Link: https://patch.msgid.link/20251105-isi_imx95-v3-3-3987533cca1c@nxp.com Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil

media: nxp: imx8-isi: Keep the default value for BLANK_PXL field

2026-03-24T21:14:44Z

The field BLANK_PXL provides the value of the blank pixel to be inserted in the image in case an overflow error occurs in the output buffers of the channel. Its default value is 0xff, so no need to set again. Besides, the field only exist in i.MX8QM/XP ISI version. Other versions like i.MX 8M series, remove the field since it won't send data to AXI bus when overflow error occurs and mark BLANK_PXL as reserved. i.MX9 series use it for other purposes. Reviewed-by: Laurent Pinchart Reviewed-by: Frank Li Signed-off-by: Guoniu Zhou Link: https://patch.msgid.link/20251105-isi_imx95-v3-2-3987533cca1c@nxp.com Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil

media: nxp: imx8-isi: Reduce minimum queued buffers from 2 to 0

2026-03-24T21:14:44Z

Fix a hang issue when capturing a single frame with applications like cam in libcamera. It would hang waiting for the driver to complete the buffer, but streaming never starts because min_queued_buffers was set to 2. The ISI module uses a ping-pong buffer mechanism that requires two buffers to be programmed at all times. However, when fewer than 2 user buffers are available, the driver use internal discard buffers to fill the remaining slot(s). Reduce minimum queued buffers from 2 to 0 allows streaming to start without any queued buffers. Fixes: cf21f328fcaf ("media: nxp: Add i.MX8 ISI driver") Cc: stable@vger.kernel.org Signed-off-by: Guoniu Zhou Reviewed-by: Laurent Pinchart Link: https://patch.msgid.link/20260312-isi_min_buffers-v2-1-d5ea1c79ad81@nxp.com Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil

media: dw100: Merge dw100_device_run and dw100_start

2026-03-24T21:14:44Z

The dw100_start() function is only called from dw100_device_run(). As both functions are not too big, move the code directly into dw100_device_run() and drop dw100_start() to improve readability. This patch contains no functional changes. Signed-off-by: Stefan Klug Reviewed-by: Xavier Roumegue Reviewed-by: Laurent Pinchart Link: https://patch.msgid.link/20260304-sklug-v6-16-topic-dw100-v3-1-dev-v5-4-1a7e1f721b50@ideasonboard.com Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil

media: dw100: Fix kernel oops with PREEMPT_RT enabled

2026-03-24T21:14:44Z

On kernels with PREEMPT_RT enabled, a "BUG: scheduling while atomic" kernel oops occurs inside dw100_irq_handler -> vb2_buffer_done. This is because vb2_buffer_done takes a spinlock which is not allowed within interrupt context on PREEMPT_RT. The first attempt to fix this was to just drop the IRQF_ONESHOT so that the interrupt is handled threaded on PREEMPT_RT systems. This introduced a new issue. The dw100 has an internal timeout counter that is gated by the DW100_BUS_CTRL_AXI_MASTER_ENABLE bit. Depending on the time it takes for the threaded handler to run and the geometry of the data being processed it is possible to reach the timeout resulting in DW100_INTERRUPT_STATUS_INT_ERR_TIME_OUT being set and "dw100 32e30000.dwe: Interrupt error: 0x1" errors in dmesg. To properly fix that, split the interrupt into two halves, reset the DW100_BUS_CTRL_AXI_MASTER_ENABLE bit in the hard interrupt handler and do the v4l2 buffer handling in the threaded half. The IRQF_ONESHOT can still be dropped as the interrupt gets disabled in the hard handler and will only be reenabled on the next dw100_device_run which will not be called before the current job has finished. Signed-off-by: Stefan Klug Reviewed-by: Xavier Roumegue Reviewed-by: Laurent Pinchart Link: https://patch.msgid.link/20260304-sklug-v6-16-topic-dw100-v3-1-dev-v5-3-1a7e1f721b50@ideasonboard.com Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil

media: dw100: Implement dynamic vertex map update

2026-03-24T21:14:44Z

Implement dynamic vertex map updates by handling the V4L2_CID_DW100_DEWARPING_16x16_VERTEX_MAP control during streaming. This allows to implement features like dynamic zoom, pan, rotate and dewarp. To stay compatible with the old version, updates of V4L2_CID_DW100_DEWARPING_16x16_VERTEX_MAP are ignored during streaming when requests are not used. Print a corresponding warning once. Signed-off-by: Stefan Klug Reviewed-by: Laurent Pinchart Link: https://patch.msgid.link/20260304-sklug-v6-16-topic-dw100-v3-1-dev-v5-2-1a7e1f721b50@ideasonboard.com Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil

media: dw100: Implement V4L2 requests support

2026-03-24T21:14:44Z

The dw100 dewarper hardware present on the NXP i.MX8MP allows very flexible dewarping using a freely configurable vertex map. Aside from lens dewarping the vertex map can be used to implement things like arbitrary zoom, pan and rotation. The current driver supports setting that vertex map before calling VIDIOC_STREAMON. To control above mentioned features during streaming it is necessary to update the vertex map dynamically. To do that in a race free manner V4L2 requests support is required. Add V4L2 requests support to prepare for dynamic vertex map updates. Signed-off-by: Stefan Klug Reviewed-by: Laurent Pinchart Link: https://patch.msgid.link/20260304-sklug-v6-16-topic-dw100-v3-1-dev-v5-1-1a7e1f721b50@ideasonboard.com Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil