diff mbox

[v3,5/7] doc_rst: media: New SDR formats PC16, PC18 & PC20

Message ID 1486479757-32128-6-git-send-email-ramesh.shanmugasundaram@bp.renesas.com (mailing list archive)
State New, archived
Headers show

Commit Message

Ramesh Shanmugasundaram Feb. 7, 2017, 3:02 p.m. UTC
This patch adds documentation for the three new SDR formats

V4L2_SDR_FMT_PCU16BE
V4L2_SDR_FMT_PCU18BE
V4L2_SDR_FMT_PCU20BE

Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>
---
 .../media/uapi/v4l/pixfmt-sdr-pcu16be.rst          | 55 ++++++++++++++++++++++
 .../media/uapi/v4l/pixfmt-sdr-pcu18be.rst          | 55 ++++++++++++++++++++++
 .../media/uapi/v4l/pixfmt-sdr-pcu20be.rst          | 54 +++++++++++++++++++++
 Documentation/media/uapi/v4l/sdr-formats.rst       |  3 ++
 4 files changed, 167 insertions(+)
 create mode 100644 Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst
 create mode 100644 Documentation/media/uapi/v4l/pixfmt-sdr-pcu18be.rst
 create mode 100644 Documentation/media/uapi/v4l/pixfmt-sdr-pcu20be.rst

Comments

Laurent Pinchart April 11, 2017, 12:39 p.m. UTC | #1
Hi Ramesh,

Thank you for the patch.

On Tuesday 07 Feb 2017 15:02:35 Ramesh Shanmugasundaram wrote:
> This patch adds documentation for the three new SDR formats
> 
> V4L2_SDR_FMT_PCU16BE
> V4L2_SDR_FMT_PCU18BE
> V4L2_SDR_FMT_PCU20BE
> 
> Signed-off-by: Ramesh Shanmugasundaram
> <ramesh.shanmugasundaram@bp.renesas.com> ---
>  .../media/uapi/v4l/pixfmt-sdr-pcu16be.rst          | 55 +++++++++++++++++++
>  .../media/uapi/v4l/pixfmt-sdr-pcu18be.rst          | 55 +++++++++++++++++++
>  .../media/uapi/v4l/pixfmt-sdr-pcu20be.rst          | 54 +++++++++++++++++++
>  Documentation/media/uapi/v4l/sdr-formats.rst       |  3 ++
>  4 files changed, 167 insertions(+)
>  create mode 100644 Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst
>  create mode 100644 Documentation/media/uapi/v4l/pixfmt-sdr-pcu18be.rst
>  create mode 100644 Documentation/media/uapi/v4l/pixfmt-sdr-pcu20be.rst
> 
> diff --git a/Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst
> b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst new file mode 100644
> index 0000000..2de1b1a
> --- /dev/null
> +++ b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst
> @@ -0,0 +1,55 @@
> +.. -*- coding: utf-8; mode: rst -*-
> +
> +.. _V4L2-SDR-FMT-PCU16BE:
> +
> +******************************
> +V4L2_SDR_FMT_PCU16BE ('PC16')
> +******************************
> +
> +Planar complex unsigned 16-bit big endian IQ sample
> +
> +Description
> +===========
> +
> +This format contains a sequence of complex number samples. Each complex
> +number consist of two parts called In-phase and Quadrature (IQ). Both I
> +and Q are represented as a 16 bit unsigned big endian number stored in
> +32 bit space. The remaining unused bits within the 32 bit space will be
> +padded with 0. I value starts first and Q value starts at an offset
> +equalling half of the buffer size (i.e.) offset = buffersize/2. Out of
> +the 16 bits, bit 15:2 (14 bit) is data and bit 1:0 (2 bit) can be any
> +value.

This sounds very strange to me. Are the two lower bits always random ? What is 
that used for ?

> +**Byte Order.**
> +Each cell is one byte.
> +
> +.. flat-table::
> +    :header-rows:  1
> +    :stub-columns: 0
> +
> +    * -  Offset:
> +      -  Byte B0
> +      -  Byte B1
> +      -  Byte B2
> +      -  Byte B3
> +    * -  start + 0:
> +      -  I'\ :sub:`0[13:6]`
> +      -  I'\ :sub:`0[5:0]; B1[1:0]=pad`
> +      -  pad
> +      -  pad
> +    * -  start + 4:
> +      -  I'\ :sub:`1[13:6]`
> +      -  I'\ :sub:`1[5:0]; B1[1:0]=pad`
> +      -  pad
> +      -  pad
> +    * -  ...
> +    * - start + offset:
> +      -  Q'\ :sub:`0[13:6]`
> +      -  Q'\ :sub:`0[5:0]; B1[1:0]=pad`
> +      -  pad
> +      -  pad
> +    * - start + offset + 4:
> +      -  Q'\ :sub:`1[13:6]`
> +      -  Q'\ :sub:`1[5:0]; B1[1:0]=pad`
> +      -  pad
> +      -  pad
> diff --git a/Documentation/media/uapi/v4l/pixfmt-sdr-pcu18be.rst
> b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu18be.rst new file mode 100644
> index 0000000..da8b26b
> --- /dev/null
> +++ b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu18be.rst
> @@ -0,0 +1,55 @@
> +.. -*- coding: utf-8; mode: rst -*-
> +
> +.. _V4L2-SDR-FMT-PCU18BE:
> +
> +******************************
> +V4L2_SDR_FMT_PCU18BE ('PC18')
> +******************************
> +
> +Planar complex unsigned 18-bit big endian IQ sample
> +
> +Description
> +===========
> +
> +This format contains a sequence of complex number samples. Each complex
> +number consist of two parts called In-phase and Quadrature (IQ). Both I
> +and Q are represented as a 18 bit unsigned big endian number stored in
> +32 bit space. The remaining unused bits within the 32 bit space will be
> +padded with 0. I value starts first and Q value starts at an offset
> +equalling half of the buffer size (i.e.) offset = buffersize/2. Out of
> +the 18 bits, bit 17:2 (16 bit) is data and bit 1:0 (2 bit) can be any
> +value.
> +
> +**Byte Order.**
> +Each cell is one byte.
> +
> +.. flat-table::
> +    :header-rows:  1
> +    :stub-columns: 0
> +
> +    * -  Offset:
> +      -  Byte B0
> +      -  Byte B1
> +      -  Byte B2
> +      -  Byte B3
> +    * -  start + 0:
> +      -  I'\ :sub:`0[17:10]`
> +      -  I'\ :sub:`0[9:2]`
> +      -  I'\ :sub:`0[1:0]; B2[5:0]=pad`
> +      -  pad
> +    * -  start + 4:
> +      -  I'\ :sub:`1[17:10]`
> +      -  I'\ :sub:`1[9:2]`
> +      -  I'\ :sub:`1[1:0]; B2[5:0]=pad`
> +      -  pad
> +    * -  ...
> +    * - start + offset:
> +      -  Q'\ :sub:`0[17:10]`
> +      -  Q'\ :sub:`0[9:2]`
> +      -  Q'\ :sub:`0[1:0]; B2[5:0]=pad`
> +      -  pad
> +    * - start + offset + 4:
> +      -  Q'\ :sub:`1[17:10]`
> +      -  Q'\ :sub:`1[9:2]`
> +      -  Q'\ :sub:`1[1:0]; B2[5:0]=pad`
> +      -  pad
> diff --git a/Documentation/media/uapi/v4l/pixfmt-sdr-pcu20be.rst
> b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu20be.rst new file mode 100644
> index 0000000..5499eed
> --- /dev/null
> +++ b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu20be.rst
> @@ -0,0 +1,54 @@
> +.. -*- coding: utf-8; mode: rst -*-
> +.. _V4L2-SDR-FMT-PCU20BE:
> +
> +******************************
> +V4L2_SDR_FMT_PCU20BE ('PC20')
> +******************************
> +
> +Planar complex unsigned 20-bit big endian IQ sample
> +
> +Description
> +===========
> +
> +This format contains a sequence of complex number samples. Each complex
> +number consist of two parts called In-phase and Quadrature (IQ). Both I
> +and Q are represented as a 20 bit unsigned big endian number stored in
> +32 bit space. The remaining unused bits within the 32 bit space will be
> +padded with 0. I value starts first and Q value starts at an offset
> +equalling half of the buffer size (i.e.) offset = buffersize/2. Out of
> +the 20 bits, bit 19:2 (18 bit) is data and bit 1:0 (2 bit) can be any
> +value.
> +
> +**Byte Order.**
> +Each cell is one byte.
> +
> +.. flat-table::
> +    :header-rows:  1
> +    :stub-columns: 0
> +
> +    * -  Offset:
> +      -  Byte B0
> +      -  Byte B1
> +      -  Byte B2
> +      -  Byte B3
> +    * -  start + 0:
> +      -  I'\ :sub:`0[19:12]`
> +      -  I'\ :sub:`0[11:4]`
> +      -  I'\ :sub:`0[3:0]; B2[3:0]=pad`
> +      -  pad
> +    * -  start + 4:
> +      -  I'\ :sub:`1[19:12]`
> +      -  I'\ :sub:`1[11:4]`
> +      -  I'\ :sub:`1[3:0]; B2[3:0]=pad`
> +      -  pad
> +    * -  ...
> +    * - start + offset:
> +      -  Q'\ :sub:`0[19:12]`
> +      -  Q'\ :sub:`0[11:4]`
> +      -  Q'\ :sub:`0[3:0]; B2[3:0]=pad`
> +      -  pad
> +    * - start + offset + 4:
> +      -  Q'\ :sub:`1[19:12]`
> +      -  Q'\ :sub:`1[11:4]`
> +      -  Q'\ :sub:`1[3:0]; B2[3:0]=pad`
> +      -  pad
> diff --git a/Documentation/media/uapi/v4l/sdr-formats.rst
> b/Documentation/media/uapi/v4l/sdr-formats.rst index f863c08..2037f5b
> 100644
> --- a/Documentation/media/uapi/v4l/sdr-formats.rst
> +++ b/Documentation/media/uapi/v4l/sdr-formats.rst
> @@ -17,3 +17,6 @@ These formats are used for :ref:`SDR <sdr>` interface
> only. pixfmt-sdr-cs08
>      pixfmt-sdr-cs14le
>      pixfmt-sdr-ru12le
> +    pixfmt-sdr-pcu16be
> +    pixfmt-sdr-pcu18be
> +    pixfmt-sdr-pcu20be
Ramesh Shanmugasundaram April 18, 2017, 5:13 p.m. UTC | #2
Hi Laurent,

Thanks for the review comments.

> On Tuesday 07 Feb 2017 15:02:35 Ramesh Shanmugasundaram wrote:
> > This patch adds documentation for the three new SDR formats
> >
> > V4L2_SDR_FMT_PCU16BE
> > V4L2_SDR_FMT_PCU18BE
> > V4L2_SDR_FMT_PCU20BE
> >
> > Signed-off-by: Ramesh Shanmugasundaram
> > <ramesh.shanmugasundaram@bp.renesas.com> ---
> >  .../media/uapi/v4l/pixfmt-sdr-pcu16be.rst          | 55
> +++++++++++++++++++
> >  .../media/uapi/v4l/pixfmt-sdr-pcu18be.rst          | 55
> +++++++++++++++++++
> >  .../media/uapi/v4l/pixfmt-sdr-pcu20be.rst          | 54
> +++++++++++++++++++
> >  Documentation/media/uapi/v4l/sdr-formats.rst       |  3 ++
> >  4 files changed, 167 insertions(+)
> >  create mode 100644
> > Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst
> >  create mode 100644
> > Documentation/media/uapi/v4l/pixfmt-sdr-pcu18be.rst
> >  create mode 100644
> > Documentation/media/uapi/v4l/pixfmt-sdr-pcu20be.rst
> >
> > diff --git a/Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst
> > b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst new file mode
> > 100644 index 0000000..2de1b1a
> > --- /dev/null
> > +++ b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst
> > @@ -0,0 +1,55 @@
> > +.. -*- coding: utf-8; mode: rst -*-
> > +
> > +.. _V4L2-SDR-FMT-PCU16BE:
> > +
> > +******************************
> > +V4L2_SDR_FMT_PCU16BE ('PC16')
> > +******************************
> > +
> > +Planar complex unsigned 16-bit big endian IQ sample
> > +
> > +Description
> > +===========
> > +
> > +This format contains a sequence of complex number samples. Each
> > +complex number consist of two parts called In-phase and Quadrature
> > +(IQ). Both I and Q are represented as a 16 bit unsigned big endian
> > +number stored in
> > +32 bit space. The remaining unused bits within the 32 bit space will
> > +be padded with 0. I value starts first and Q value starts at an
> > +offset equalling half of the buffer size (i.e.) offset =
> > +buffersize/2. Out of the 16 bits, bit 15:2 (14 bit) is data and bit
> > +1:0 (2 bit) can be any value.
> 
> This sounds very strange to me. Are the two lower bits always random ?
> What is that used for ?

It could be zeros or it could be status bits in case of MAX2175 (if enabled). I mentioned any value because the user app does not have any assumptions on these bits value.
 
> 
> > +**Byte Order.**
> > +Each cell is one byte.
> > +
> > +.. flat-table::
> > +    :header-rows:  1
> > +    :stub-columns: 0
> > +
> > +    * -  Offset:
> > +      -  Byte B0
> > +      -  Byte B1
> > +      -  Byte B2
> > +      -  Byte B3
> > +    * -  start + 0:
> > +      -  I'\ :sub:`0[13:6]`
> > +      -  I'\ :sub:`0[5:0]; B1[1:0]=pad`
> > +      -  pad
> > +      -  pad
> > +    * -  start + 4:
> > +      -  I'\ :sub:`1[13:6]`
> > +      -  I'\ :sub:`1[5:0]; B1[1:0]=pad`
> > +      -  pad
> > +      -  pad
> > +    * -  ...
> > +    * - start + offset:
> > +      -  Q'\ :sub:`0[13:6]`
> > +      -  Q'\ :sub:`0[5:0]; B1[1:0]=pad`
> > +      -  pad
> > +      -  pad
> > +    * - start + offset + 4:
> > +      -  Q'\ :sub:`1[13:6]`
> > +      -  Q'\ :sub:`1[5:0]; B1[1:0]=pad`
> > +      -  pad
> > +      -  pad
> > diff --git a/Documentation/media/uapi/v4l/pixfmt-sdr-pcu18be.rst
> > b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu18be.rst new file mode
> > 100644 index 0000000..da8b26b
> > --- /dev/null
> > +++ b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu18be.rst
> > @@ -0,0 +1,55 @@
> > +.. -*- coding: utf-8; mode: rst -*-
> > +
> > +.. _V4L2-SDR-FMT-PCU18BE:
> > +
> > +******************************
> > +V4L2_SDR_FMT_PCU18BE ('PC18')
> > +******************************
> > +
> > +Planar complex unsigned 18-bit big endian IQ sample
> > +
> > +Description
> > +===========
> > +
> > +This format contains a sequence of complex number samples. Each
> > +complex number consist of two parts called In-phase and Quadrature
> > +(IQ). Both I and Q are represented as a 18 bit unsigned big endian
> > +number stored in
> > +32 bit space. The remaining unused bits within the 32 bit space will
> > +be padded with 0. I value starts first and Q value starts at an
> > +offset equalling half of the buffer size (i.e.) offset =
> > +buffersize/2. Out of the 18 bits, bit 17:2 (16 bit) is data and bit
> > +1:0 (2 bit) can be any value.
> > +
> > +**Byte Order.**
> > +Each cell is one byte.
> > +
> > +.. flat-table::
> > +    :header-rows:  1
> > +    :stub-columns: 0
> > +
> > +    * -  Offset:
> > +      -  Byte B0
> > +      -  Byte B1
> > +      -  Byte B2
> > +      -  Byte B3
> > +    * -  start + 0:
> > +      -  I'\ :sub:`0[17:10]`
> > +      -  I'\ :sub:`0[9:2]`
> > +      -  I'\ :sub:`0[1:0]; B2[5:0]=pad`
> > +      -  pad
> > +    * -  start + 4:
> > +      -  I'\ :sub:`1[17:10]`
> > +      -  I'\ :sub:`1[9:2]`
> > +      -  I'\ :sub:`1[1:0]; B2[5:0]=pad`
> > +      -  pad
> > +    * -  ...
> > +    * - start + offset:
> > +      -  Q'\ :sub:`0[17:10]`
> > +      -  Q'\ :sub:`0[9:2]`
> > +      -  Q'\ :sub:`0[1:0]; B2[5:0]=pad`
> > +      -  pad
> > +    * - start + offset + 4:
> > +      -  Q'\ :sub:`1[17:10]`
> > +      -  Q'\ :sub:`1[9:2]`
> > +      -  Q'\ :sub:`1[1:0]; B2[5:0]=pad`
> > +      -  pad
> > diff --git a/Documentation/media/uapi/v4l/pixfmt-sdr-pcu20be.rst
> > b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu20be.rst new file mode
> > 100644 index 0000000..5499eed
> > --- /dev/null
> > +++ b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu20be.rst
> > @@ -0,0 +1,54 @@
> > +.. -*- coding: utf-8; mode: rst -*-
> > +.. _V4L2-SDR-FMT-PCU20BE:
> > +
> > +******************************
> > +V4L2_SDR_FMT_PCU20BE ('PC20')
> > +******************************
> > +
> > +Planar complex unsigned 20-bit big endian IQ sample
> > +
> > +Description
> > +===========
> > +
> > +This format contains a sequence of complex number samples. Each
> > +complex number consist of two parts called In-phase and Quadrature
> > +(IQ). Both I and Q are represented as a 20 bit unsigned big endian
> > +number stored in
> > +32 bit space. The remaining unused bits within the 32 bit space will
> > +be padded with 0. I value starts first and Q value starts at an
> > +offset equalling half of the buffer size (i.e.) offset =
> > +buffersize/2. Out of the 20 bits, bit 19:2 (18 bit) is data and bit
> > +1:0 (2 bit) can be any value.
> > +
> > +**Byte Order.**
> > +Each cell is one byte.
> > +
> > +.. flat-table::
> > +    :header-rows:  1
> > +    :stub-columns: 0
> > +
> > +    * -  Offset:
> > +      -  Byte B0
> > +      -  Byte B1
> > +      -  Byte B2
> > +      -  Byte B3
> > +    * -  start + 0:
> > +      -  I'\ :sub:`0[19:12]`
> > +      -  I'\ :sub:`0[11:4]`
> > +      -  I'\ :sub:`0[3:0]; B2[3:0]=pad`
> > +      -  pad
> > +    * -  start + 4:
> > +      -  I'\ :sub:`1[19:12]`
> > +      -  I'\ :sub:`1[11:4]`
> > +      -  I'\ :sub:`1[3:0]; B2[3:0]=pad`
> > +      -  pad
> > +    * -  ...
> > +    * - start + offset:
> > +      -  Q'\ :sub:`0[19:12]`
> > +      -  Q'\ :sub:`0[11:4]`
> > +      -  Q'\ :sub:`0[3:0]; B2[3:0]=pad`
> > +      -  pad
> > +    * - start + offset + 4:
> > +      -  Q'\ :sub:`1[19:12]`
> > +      -  Q'\ :sub:`1[11:4]`
> > +      -  Q'\ :sub:`1[3:0]; B2[3:0]=pad`
> > +      -  pad
> > diff --git a/Documentation/media/uapi/v4l/sdr-formats.rst
> > b/Documentation/media/uapi/v4l/sdr-formats.rst index f863c08..2037f5b
> > 100644
> > --- a/Documentation/media/uapi/v4l/sdr-formats.rst
> > +++ b/Documentation/media/uapi/v4l/sdr-formats.rst
> > @@ -17,3 +17,6 @@ These formats are used for :ref:`SDR <sdr>`
> > interface only. pixfmt-sdr-cs08
> >      pixfmt-sdr-cs14le
> >      pixfmt-sdr-ru12le
> > +    pixfmt-sdr-pcu16be
> > +    pixfmt-sdr-pcu18be
> > +    pixfmt-sdr-pcu20be


Thanks,
Ramesh
diff mbox

Patch

diff --git a/Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst
new file mode 100644
index 0000000..2de1b1a
--- /dev/null
+++ b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu16be.rst
@@ -0,0 +1,55 @@ 
+.. -*- coding: utf-8; mode: rst -*-
+
+.. _V4L2-SDR-FMT-PCU16BE:
+
+******************************
+V4L2_SDR_FMT_PCU16BE ('PC16')
+******************************
+
+Planar complex unsigned 16-bit big endian IQ sample
+
+Description
+===========
+
+This format contains a sequence of complex number samples. Each complex
+number consist of two parts called In-phase and Quadrature (IQ). Both I
+and Q are represented as a 16 bit unsigned big endian number stored in
+32 bit space. The remaining unused bits within the 32 bit space will be
+padded with 0. I value starts first and Q value starts at an offset
+equalling half of the buffer size (i.e.) offset = buffersize/2. Out of
+the 16 bits, bit 15:2 (14 bit) is data and bit 1:0 (2 bit) can be any
+value.
+
+**Byte Order.**
+Each cell is one byte.
+
+.. flat-table::
+    :header-rows:  1
+    :stub-columns: 0
+
+    * -  Offset:
+      -  Byte B0
+      -  Byte B1
+      -  Byte B2
+      -  Byte B3
+    * -  start + 0:
+      -  I'\ :sub:`0[13:6]`
+      -  I'\ :sub:`0[5:0]; B1[1:0]=pad`
+      -  pad
+      -  pad
+    * -  start + 4:
+      -  I'\ :sub:`1[13:6]`
+      -  I'\ :sub:`1[5:0]; B1[1:0]=pad`
+      -  pad
+      -  pad
+    * -  ...
+    * - start + offset:
+      -  Q'\ :sub:`0[13:6]`
+      -  Q'\ :sub:`0[5:0]; B1[1:0]=pad`
+      -  pad
+      -  pad
+    * - start + offset + 4:
+      -  Q'\ :sub:`1[13:6]`
+      -  Q'\ :sub:`1[5:0]; B1[1:0]=pad`
+      -  pad
+      -  pad
diff --git a/Documentation/media/uapi/v4l/pixfmt-sdr-pcu18be.rst b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu18be.rst
new file mode 100644
index 0000000..da8b26b
--- /dev/null
+++ b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu18be.rst
@@ -0,0 +1,55 @@ 
+.. -*- coding: utf-8; mode: rst -*-
+
+.. _V4L2-SDR-FMT-PCU18BE:
+
+******************************
+V4L2_SDR_FMT_PCU18BE ('PC18')
+******************************
+
+Planar complex unsigned 18-bit big endian IQ sample
+
+Description
+===========
+
+This format contains a sequence of complex number samples. Each complex
+number consist of two parts called In-phase and Quadrature (IQ). Both I
+and Q are represented as a 18 bit unsigned big endian number stored in
+32 bit space. The remaining unused bits within the 32 bit space will be
+padded with 0. I value starts first and Q value starts at an offset
+equalling half of the buffer size (i.e.) offset = buffersize/2. Out of
+the 18 bits, bit 17:2 (16 bit) is data and bit 1:0 (2 bit) can be any
+value.
+
+**Byte Order.**
+Each cell is one byte.
+
+.. flat-table::
+    :header-rows:  1
+    :stub-columns: 0
+
+    * -  Offset:
+      -  Byte B0
+      -  Byte B1
+      -  Byte B2
+      -  Byte B3
+    * -  start + 0:
+      -  I'\ :sub:`0[17:10]`
+      -  I'\ :sub:`0[9:2]`
+      -  I'\ :sub:`0[1:0]; B2[5:0]=pad`
+      -  pad
+    * -  start + 4:
+      -  I'\ :sub:`1[17:10]`
+      -  I'\ :sub:`1[9:2]`
+      -  I'\ :sub:`1[1:0]; B2[5:0]=pad`
+      -  pad
+    * -  ...
+    * - start + offset:
+      -  Q'\ :sub:`0[17:10]`
+      -  Q'\ :sub:`0[9:2]`
+      -  Q'\ :sub:`0[1:0]; B2[5:0]=pad`
+      -  pad
+    * - start + offset + 4:
+      -  Q'\ :sub:`1[17:10]`
+      -  Q'\ :sub:`1[9:2]`
+      -  Q'\ :sub:`1[1:0]; B2[5:0]=pad`
+      -  pad
diff --git a/Documentation/media/uapi/v4l/pixfmt-sdr-pcu20be.rst b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu20be.rst
new file mode 100644
index 0000000..5499eed
--- /dev/null
+++ b/Documentation/media/uapi/v4l/pixfmt-sdr-pcu20be.rst
@@ -0,0 +1,54 @@ 
+.. -*- coding: utf-8; mode: rst -*-
+.. _V4L2-SDR-FMT-PCU20BE:
+
+******************************
+V4L2_SDR_FMT_PCU20BE ('PC20')
+******************************
+
+Planar complex unsigned 20-bit big endian IQ sample
+
+Description
+===========
+
+This format contains a sequence of complex number samples. Each complex
+number consist of two parts called In-phase and Quadrature (IQ). Both I
+and Q are represented as a 20 bit unsigned big endian number stored in
+32 bit space. The remaining unused bits within the 32 bit space will be
+padded with 0. I value starts first and Q value starts at an offset
+equalling half of the buffer size (i.e.) offset = buffersize/2. Out of
+the 20 bits, bit 19:2 (18 bit) is data and bit 1:0 (2 bit) can be any
+value.
+
+**Byte Order.**
+Each cell is one byte.
+
+.. flat-table::
+    :header-rows:  1
+    :stub-columns: 0
+
+    * -  Offset:
+      -  Byte B0
+      -  Byte B1
+      -  Byte B2
+      -  Byte B3
+    * -  start + 0:
+      -  I'\ :sub:`0[19:12]`
+      -  I'\ :sub:`0[11:4]`
+      -  I'\ :sub:`0[3:0]; B2[3:0]=pad`
+      -  pad
+    * -  start + 4:
+      -  I'\ :sub:`1[19:12]`
+      -  I'\ :sub:`1[11:4]`
+      -  I'\ :sub:`1[3:0]; B2[3:0]=pad`
+      -  pad
+    * -  ...
+    * - start + offset:
+      -  Q'\ :sub:`0[19:12]`
+      -  Q'\ :sub:`0[11:4]`
+      -  Q'\ :sub:`0[3:0]; B2[3:0]=pad`
+      -  pad
+    * - start + offset + 4:
+      -  Q'\ :sub:`1[19:12]`
+      -  Q'\ :sub:`1[11:4]`
+      -  Q'\ :sub:`1[3:0]; B2[3:0]=pad`
+      -  pad
diff --git a/Documentation/media/uapi/v4l/sdr-formats.rst b/Documentation/media/uapi/v4l/sdr-formats.rst
index f863c08..2037f5b 100644
--- a/Documentation/media/uapi/v4l/sdr-formats.rst
+++ b/Documentation/media/uapi/v4l/sdr-formats.rst
@@ -17,3 +17,6 @@  These formats are used for :ref:`SDR <sdr>` interface only.
     pixfmt-sdr-cs08
     pixfmt-sdr-cs14le
     pixfmt-sdr-ru12le
+    pixfmt-sdr-pcu16be
+    pixfmt-sdr-pcu18be
+    pixfmt-sdr-pcu20be