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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
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Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+.. SPDX-License-Identifier: GPL-2.0
+
+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/driver-api/media/v4l2-controls.rst 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.