* [PATCH] media: uvcvideo: Add support for NV21 pixel format
@ 2026-10-25 14:35 Manuel Herrmann
2026-10-25 20:06 ` Laurent Pinchart
0 siblings, 1 reply; 3+ messages in thread
From: Manuel Herrmann @ 2026-10-25 14:35 UTC (permalink / raw)
To: Laurent Pinchart, Hans de Goede
Cc: Mauro Carvalho Chehab, Greg Kroah-Hartman, linux-media,
linux-usb, linux-kernel, Manuel Herrmann
Add support for the NV21 (Y/VU 4:2:0) pixel format to the uvcvideo
driver. This format is exposed by the color camera of the Creality Pika
3D scanner (2bc5:0c0b), next to YUYV and MJPEG. Without it, the driver
skips the format as unknown.
NV21 only differs from NV12 in the order of the chroma samples, so
bytesperline is wWidth, as for NV12.
Signed-off-by: Manuel Herrmann <m@manuel-herrmann.de>
---
Tested on media next (d7e7bca71698) in a QEMU guest with the scanner passed
through. Before the patch, the driver logs
uvcvideo 2-1:1.3: Unknown video format 3132564e-0000-0010-8000-00aa00389b71
and the color node only offers YUYV and MJPG. With the patch, NV21 is
listed, G_FMT reports a bytesperline of 1280 for 1280x960, and v4l2-ctl
streams it at 30 fps. A frame captured in the guest has the right
colors decoded as NV21, and red and blue swapped decoded as NV12.
drivers/media/common/uvc.c | 4 ++++
drivers/media/usb/uvc/uvc_v4l2.c | 1 +
include/linux/usb/uvc.h | 3 +++
3 files changed, 8 insertions(+)
diff --git a/drivers/media/common/uvc.c b/drivers/media/common/uvc.c
index 0107cedd0..7d918ba0e 100644
--- a/drivers/media/common/uvc.c
+++ b/drivers/media/common/uvc.c
@@ -24,6 +24,10 @@ static const struct uvc_format_desc uvc_fmts[] = {
.guid = UVC_GUID_FORMAT_NV12,
.fcc = V4L2_PIX_FMT_NV12,
},
+ {
+ .guid = UVC_GUID_FORMAT_NV21,
+ .fcc = V4L2_PIX_FMT_NV21,
+ },
{
.guid = UVC_GUID_FORMAT_MJPEG,
.fcc = V4L2_PIX_FMT_MJPEG,
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
index 644c2f1cd..60732f5ac 100644
--- a/drivers/media/usb/uvc/uvc_v4l2.c
+++ b/drivers/media/usb/uvc/uvc_v4l2.c
@@ -232,6 +232,7 @@ static u32 uvc_v4l2_get_bytesperline(const struct uvc_format *format,
{
switch (format->fcc) {
case V4L2_PIX_FMT_NV12:
+ case V4L2_PIX_FMT_NV21:
case V4L2_PIX_FMT_YVU420:
case V4L2_PIX_FMT_YUV420:
case V4L2_PIX_FMT_M420:
diff --git a/include/linux/usb/uvc.h b/include/linux/usb/uvc.h
index 99b070ab8..48419a862 100644
--- a/include/linux/usb/uvc.h
+++ b/include/linux/usb/uvc.h
@@ -85,6 +85,9 @@
#define UVC_GUID_FORMAT_NV12 \
{ 'N', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
+#define UVC_GUID_FORMAT_NV21 \
+ { 'N', 'V', '2', '1', 0x00, 0x00, 0x10, 0x00, \
+ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
#define UVC_GUID_FORMAT_YV12 \
{ 'Y', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
base-commit: d7e7bca7169873b46e857c025c10f3336c1258d8
--
2.55.0
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] media: uvcvideo: Add support for NV21 pixel format
2026-10-25 14:35 [PATCH] media: uvcvideo: Add support for NV21 pixel format Manuel Herrmann
@ 2026-10-25 20:06 ` Laurent Pinchart
2026-10-25 23:26 ` Manuel Herrmann
0 siblings, 1 reply; 3+ messages in thread
From: Laurent Pinchart @ 2026-10-25 20:06 UTC (permalink / raw)
To: Manuel Herrmann
Cc: Hans de Goede, Mauro Carvalho Chehab, Greg Kroah-Hartman,
linux-media, linux-usb, linux-kernel
On Sun, Oct 25, 2026 at 03:35:22PM +0100, Manuel Herrmann wrote:
> Add support for the NV21 (Y/VU 4:2:0) pixel format to the uvcvideo
> driver. This format is exposed by the color camera of the Creality Pika
> 3D scanner (2bc5:0c0b), next to YUYV and MJPEG. Without it, the driver
Could you please provide the USB descriptors for that device
(`lsusb -v -d 2bc5:0c0b`) ?
> skips the format as unknown.
>
> NV21 only differs from NV12 in the order of the chroma samples, so
> bytesperline is wWidth, as for NV12.
>
> Signed-off-by: Manuel Herrmann <m@manuel-herrmann.de>
> ---
> Tested on media next (d7e7bca71698) in a QEMU guest with the scanner passed
> through. Before the patch, the driver logs
>
> uvcvideo 2-1:1.3: Unknown video format 3132564e-0000-0010-8000-00aa00389b71
>
> and the color node only offers YUYV and MJPG. With the patch, NV21 is
> listed, G_FMT reports a bytesperline of 1280 for 1280x960, and v4l2-ctl
> streams it at 30 fps. A frame captured in the guest has the right
> colors decoded as NV21, and red and blue swapped decoded as NV12.
>
> drivers/media/common/uvc.c | 4 ++++
> drivers/media/usb/uvc/uvc_v4l2.c | 1 +
> include/linux/usb/uvc.h | 3 +++
> 3 files changed, 8 insertions(+)
>
> diff --git a/drivers/media/common/uvc.c b/drivers/media/common/uvc.c
> index 0107cedd0..7d918ba0e 100644
> --- a/drivers/media/common/uvc.c
> +++ b/drivers/media/common/uvc.c
> @@ -24,6 +24,10 @@ static const struct uvc_format_desc uvc_fmts[] = {
> .guid = UVC_GUID_FORMAT_NV12,
> .fcc = V4L2_PIX_FMT_NV12,
> },
> + {
> + .guid = UVC_GUID_FORMAT_NV21,
> + .fcc = V4L2_PIX_FMT_NV21,
> + },
> {
> .guid = UVC_GUID_FORMAT_MJPEG,
> .fcc = V4L2_PIX_FMT_MJPEG,
> diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
> index 644c2f1cd..60732f5ac 100644
> --- a/drivers/media/usb/uvc/uvc_v4l2.c
> +++ b/drivers/media/usb/uvc/uvc_v4l2.c
> @@ -232,6 +232,7 @@ static u32 uvc_v4l2_get_bytesperline(const struct uvc_format *format,
> {
> switch (format->fcc) {
> case V4L2_PIX_FMT_NV12:
> + case V4L2_PIX_FMT_NV21:
> case V4L2_PIX_FMT_YVU420:
> case V4L2_PIX_FMT_YUV420:
> case V4L2_PIX_FMT_M420:
> diff --git a/include/linux/usb/uvc.h b/include/linux/usb/uvc.h
> index 99b070ab8..48419a862 100644
> --- a/include/linux/usb/uvc.h
> +++ b/include/linux/usb/uvc.h
> @@ -85,6 +85,9 @@
> #define UVC_GUID_FORMAT_NV12 \
> { 'N', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
> 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
> +#define UVC_GUID_FORMAT_NV21 \
> + { 'N', 'V', '2', '1', 0x00, 0x00, 0x10, 0x00, \
> + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
> #define UVC_GUID_FORMAT_YV12 \
> { 'Y', 'V', '1', '2', 0x00, 0x00, 0x10, 0x00, \
> 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}
>
> base-commit: d7e7bca7169873b46e857c025c10f3336c1258d8
--
Regards,
Laurent Pinchart
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] media: uvcvideo: Add support for NV21 pixel format
2026-10-25 20:06 ` Laurent Pinchart
@ 2026-10-25 23:26 ` Manuel Herrmann
0 siblings, 0 replies; 3+ messages in thread
From: Manuel Herrmann @ 2026-10-25 23:26 UTC (permalink / raw)
To: Laurent Pinchart
Cc: Hans de Goede, Mauro Carvalho Chehab, Greg Kroah-Hartman,
linux-media, linux-usb, linux-kernel
On 2026-10-25 21:06, Laurent Pinchart wrote:
> On Sun, Oct 25, 2026 at 03:35:22PM +0100, Manuel Herrmann wrote:
>> Add support for the NV21 (Y/VU 4:2:0) pixel format to the uvcvideo
>> driver. This format is exposed by the color camera of the Creality Pika
>> 3D scanner (2bc5:0c0b), next to YUYV and MJPEG. Without it, the driver
>
> Could you please provide the USB descriptors for that device
> (`lsusb -v -d 2bc5:0c0b`) ?
Sure, here is the output:
Bus 002 Device 009: ID 2bc5:0c0b Orbbec 3D Technology International, Inc Creality Pika
Negotiated speed: SuperSpeed (5Gbps)
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 [unknown]
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 9
idVendor 0x2bc5 Orbbec 3D Technology International, Inc
idProduct 0x0c0b Creality Pika
bcdDevice 4.19
iManufacturer 1 Creality
iProduct 2 Creality Pika
iSerial 3 AWR3861007J
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x02fb
bNumInterfaces 5
bConfigurationValue 1
iConfiguration 4 Video
bmAttributes 0x80
(Bus Powered)
MaxPower 896mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 14 Video
bFunctionSubClass 3 Video Interface Collection
bFunctionProtocol 0
iFunction 5 Creality Pika Depth Camera
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 14 Video
bInterfaceSubClass 1 Video Control
bInterfaceProtocol 0
iInterface 5 Creality Pika Depth Camera
VideoControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdUVC 1.00
wTotalLength 0x004e
dwClockFrequency 48.000000MHz
bInCollection 1
baInterfaceNr( 0) 1
VideoControl Interface Descriptor:
bLength 18
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0201 Camera Sensor
bAssocTerminal 0
iTerminal 0
wObjectiveFocalLengthMin 0
wObjectiveFocalLengthMax 0
wOcularFocalLength 0
bControlSize 3
bmControls 0x0000000a
Auto-Exposure Mode
Exposure Time (Absolute)
VideoControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
bUnitID 2
bSourceID 1
wMaxMultiplier 16384
bControlSize 2
bmControls 0x00000200
Gain
iProcessing 0
bmVideoStandards 0x00
VideoControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 3
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 4
iTerminal 0
VideoControl Interface Descriptor:
bLength 26
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 4
guidExtensionCode {a55751a1-f3c5-4a5e-8d5a-6854b8fa2716}
bNumControls 3
bNrInPins 1
baSourceID( 0) 2
bControlSize 1
bmControls( 0) 0x07
iExtension 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 6 Video Streaming
VideoStreaming Interface Descriptor:
bLength 15
bDescriptorType 36
bDescriptorSubtype 1 (INPUT_HEADER)
bNumFormats 2
wTotalLength 0x00d7
bEndpointAddress 0x81 EP 1 IN
bmInfo 0
bTerminalLink 3
bStillCaptureMethod 0
bTriggerSupport 0
bTriggerUsage 0
bControlSize 1
bmaControls( 0) 0
bmaControls( 1) 4
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 1
bNumFrameDescriptors 1
guidFormat {20203859-0000-0010-8000-00aa00389b71}
bBitsPerPixel 8
bDefaultFrameIndex 1
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 78
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 960
dwMinBitRate 98304000
dwMaxBitRate 589824000
dwMaxVideoFrameBufferSize 2457600
dwDefaultFrameInterval 100000
bFrameIntervalType 13
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 90909
dwFrameInterval( 2) 100000
dwFrameInterval( 3) 111111
dwFrameInterval( 4) 125000
dwFrameInterval( 5) 142857
dwFrameInterval( 6) 166666
dwFrameInterval( 7) 200000
dwFrameInterval( 8) 250000
dwFrameInterval( 9) 333333
dwFrameInterval(10) 500000
dwFrameInterval(11) 666666
dwFrameInterval(12) 1000000
VideoStreaming Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 6 (FORMAT_MJPEG)
bFormatIndex 2
bNumFrameDescriptors 1
bFlags 0
Fixed-size samples: No
bDefaultFrameIndex 1
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 1 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 78
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 960
dwMinBitRate 98304000
dwMaxBitRate 589824000
dwMaxVideoFrameBufferSize 2457600
dwDefaultFrameInterval 100000
bFrameIntervalType 13
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 90909
dwFrameInterval( 2) 100000
dwFrameInterval( 3) 111111
dwFrameInterval( 4) 125000
dwFrameInterval( 5) 142857
dwFrameInterval( 6) 166666
dwFrameInterval( 7) 200000
dwFrameInterval( 8) 250000
dwFrameInterval( 9) 333333
dwFrameInterval(10) 500000
dwFrameInterval(11) 666666
dwFrameInterval(12) 1000000
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 4 (SMPTE 170M (BT.601))
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 13
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 2
bInterfaceCount 2
bFunctionClass 14 Video
bFunctionSubClass 3 Video Interface Collection
bFunctionProtocol 0
iFunction 8 Creality Pika RGB Camera
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 14 Video
bInterfaceSubClass 1 Video Control
bInterfaceProtocol 0
iInterface 8 Creality Pika RGB Camera
VideoControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdUVC 1.00
wTotalLength 0x004e
dwClockFrequency 48.000000MHz
bInCollection 1
baInterfaceNr( 0) 3
VideoControl Interface Descriptor:
bLength 18
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0201 Camera Sensor
bAssocTerminal 0
iTerminal 0
wObjectiveFocalLengthMin 0
wObjectiveFocalLengthMax 0
wOcularFocalLength 0
bControlSize 3
bmControls 0x0000200a
Auto-Exposure Mode
Exposure Time (Absolute)
Roll (Absolute)
VideoControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
bUnitID 2
bSourceID 1
wMaxMultiplier 16384
bControlSize 2
bmControls 0x0000165b
Brightness
Contrast
Saturation
Sharpness
White Balance Temperature
Gain
Power Line Frequency
White Balance Temperature, Auto
iProcessing 0
bmVideoStandards 0x00
VideoControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 3
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 4
iTerminal 0
VideoControl Interface Descriptor:
bLength 26
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 4
guidExtensionCode {a55751a1-f3c5-4a5e-8d5a-6854b8fa2716}
bNumControls 3
bNrInPins 1
baSourceID( 0) 2
bControlSize 1
bmControls( 0) 0x07
iExtension 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 9 Video Streaming
VideoStreaming Interface Descriptor:
bLength 16
bDescriptorType 36
bDescriptorSubtype 1 (INPUT_HEADER)
bNumFormats 3
wTotalLength 0x0105
bEndpointAddress 0x82 EP 2 IN
bmInfo 0
bTerminalLink 3
bStillCaptureMethod 0
bTriggerSupport 0
bTriggerUsage 0
bControlSize 1
bmaControls( 0) 0
bmaControls( 1) 4
bmaControls( 2) 4
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 1
bNumFrameDescriptors 1
guidFormat {32595559-0000-0010-8000-00aa00389b71}
bBitsPerPixel 16
bDefaultFrameIndex 1
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 58
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 960
dwMinBitRate 98304000
dwMaxBitRate 589824000
dwMaxVideoFrameBufferSize 2457600
dwDefaultFrameInterval 333333
bFrameIntervalType 8
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 250000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 500000
dwFrameInterval( 5) 666666
dwFrameInterval( 6) 1000000
dwFrameInterval( 7) 2000000
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 2
bNumFrameDescriptors 1
guidFormat {3132564e-0000-0010-8000-00aa00389b71}
bBitsPerPixel 12
bDefaultFrameIndex 1
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 58
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 960
dwMinBitRate 98304000
dwMaxBitRate 589824000
dwMaxVideoFrameBufferSize 2457600
dwDefaultFrameInterval 333333
bFrameIntervalType 8
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 250000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 500000
dwFrameInterval( 5) 666666
dwFrameInterval( 6) 1000000
dwFrameInterval( 7) 2000000
VideoStreaming Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 6 (FORMAT_MJPEG)
bFormatIndex 3
bNumFrameDescriptors 1
bFlags 0
Fixed-size samples: No
bDefaultFrameIndex 1
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 1 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 58
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 960
dwMinBitRate 98304000
dwMaxBitRate 589824000
dwMaxVideoFrameBufferSize 2457600
dwDefaultFrameInterval 333333
bFrameIntervalType 8
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 200000
dwFrameInterval( 2) 250000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 500000
dwFrameInterval( 5) 666666
dwFrameInterval( 6) 1000000
dwFrameInterval( 7) 2000000
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 4 (SMPTE 170M (BT.601))
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 0
bMaxBurst 13
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 4
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0 [unknown]
bInterfaceProtocol 0
iInterface 11 HID Interface
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.01
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 33
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0100 1x 256 bytes
bInterval 4
bMaxBurst 0
wBytesPerInterval 256
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0100 1x 256 bytes
bInterval 4
bMaxBurst 0
wBytesPerInterval 256
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 0x0016
bNumDeviceCaps 2
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabilityType 2
bmAttributes 0x00000006
BESL Link Power Management (LPM) Supported
SuperSpeed USB Device Capability:
bLength 10
bDescriptorType 16
bDevCapabilityType 3
bmAttributes 0x00
wSpeedsSupported 0x000f
Device can operate at Low Speed (1Mbps)
Device can operate at Full Speed (12Mbps)
Device can operate at High Speed (480Mbps)
Device can operate at SuperSpeed (5Gbps)
bFunctionalitySupport 1
Lowest fully-functional device speed is Full Speed (12Mbps)
bU1DevExitLat 0 micro seconds
bU2DevExitLat 0 micro seconds
Device Status: 0x0000
(Bus Powered)
--
Regards,
Manuel Herrmann
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2026-10-25 23:26 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2026-10-25 14:35 [PATCH] media: uvcvideo: Add support for NV21 pixel format Manuel Herrmann
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2026-10-25 23:26 ` Manuel Herrmann
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