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| author |   Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com> | 2017-06-13 09:54:47 -0300 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-06-20 07:02:43 -0300 |
| commit | b47b79d8a231d137ec9f9a5bef05f9e2f19a4347 (patch) | |
| tree | 45daae32dc861131d7e1b931fc6aef9cc6e9705e /Documentation/media/v4l-drivers/max2175.rst | |
| parent | [media] dt-bindings: media: Add MAX2175 binding description (diff) | |
| download | wireguard-linux-b47b79d8a231d137ec9f9a5bef05f9e2f19a4347.tar.xz wireguard-linux-b47b79d8a231d137ec9f9a5bef05f9e2f19a4347.zip | |
[media] media: i2c: max2175: Add MAX2175 support
This patch adds driver support for the MAX2175 chip. This is Maxim
Integrated's RF to Bits tuner front end chip designed for software-defined
radio solutions. This driver exposes the tuner as a sub-device instance
with standard and custom controls to configure the device.
Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'Documentation/media/v4l-drivers/max2175.rst')
| -rw-r--r-- | Documentation/media/v4l-drivers/max2175.rst | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/Documentation/media/v4l-drivers/max2175.rst b/Documentation/media/v4l-drivers/max2175.rst new file mode 100644 index 000000000000..04478c25d57a --- /dev/null +++ b/Documentation/media/v4l-drivers/max2175.rst @@ -0,0 +1,62 @@ +Maxim Integrated MAX2175 RF to bits tuner driver +================================================ + +The MAX2175 driver implements the following driver-specific controls: + +``V4L2_CID_MAX2175_I2S_ENABLE`` +------------------------------- + Enable/Disable I2S output of the tuner. This is a private control + that can be accessed only using the subdev interface. + Refer to Documentation/media/kapi/v4l2-controls for more details. + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 1 4 + + * - ``(0)`` + - I2S output is disabled. + * - ``(1)`` + - I2S output is enabled. + +``V4L2_CID_MAX2175_HSLS`` +------------------------- + The high-side/low-side (HSLS) control of the tuner for a given band. + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 1 4 + + * - ``(0)`` + - The LO frequency position is below the desired frequency. + * - ``(1)`` + - The LO frequency position is above the desired frequency. + +``V4L2_CID_MAX2175_RX_MODE (menu)`` +----------------------------------- + The Rx mode controls a number of preset parameters of the tuner like + sample clock (sck), sampling rate etc. These multiple settings are + provided under one single label called Rx mode in the datasheet. The + list below shows the supported modes with a brief description. + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 1 4 + + * - ``"Europe modes"`` + * - ``"FM 1.2" (0)`` + - This configures FM band with a sample rate of 0.512 million + samples/sec with a 10.24 MHz sck. + * - ``"DAB 1.2" (1)`` + - This configures VHF band with a sample rate of 2.048 million + samples/sec with a 32.768 MHz sck. + + * - ``"North America modes"`` + * - ``"FM 1.0" (0)`` + - This configures FM band with a sample rate of 0.7441875 million + samples/sec with a 14.88375 MHz sck. + * - ``"DAB 1.2" (1)`` + - This configures FM band with a sample rate of 0.372 million + samples/sec with a 7.441875 MHz sck. |