| menu "Sound support" |
| |
| config SOUND |
| bool "Enable sound support" |
| help |
| Support making sounds through an audio codec. This is normally a |
| beep at a chosen frequency for a selected length of time. However |
| the drivers support playing arbitrary sound samples using a |
| PCM interface. |
| |
| Note: At present the sound setup is somewhat tangled up in that the |
| audio codecs are called from the sound-i2s code. This could be |
| converted to driver model. |
| |
| config I2S |
| bool "Enable I2S support" |
| depends on SOUND |
| help |
| I2S is a serial bus often used to transmit audio data from the |
| SoC to the audio codec. This option enables sound support using |
| I2S. It calls either of the two supported codecs (no use is made |
| of driver model at present). |
| |
| config I2S_ROCKCHIP |
| bool "Enable I2S support for Rockchip SoCs" |
| depends on I2S |
| help |
| Rockchip SoCs support an I2S interface for sending audio data to an |
| audio codec. This option enables support for this, using one of the |
| available audio codec drivers. This driver does not make use of |
| DMA, but writes each word directly to the hardware. |
| |
| config I2S_SAMSUNG |
| bool "Enable I2C support for Samsung SoCs" |
| depends on I2S |
| help |
| Samsung Exynos SoCs support an I2S interface for sending audio |
| data to an audio codec. This option enables support for this, |
| using one of the available audio codec drivers. Enabling this |
| option provides an implementation for sound_init() and |
| sound_play(). |
| |
| config SOUND_DA7219 |
| bool "Dialog Semiconductor audio codec" |
| depends on SOUND |
| help |
| The DA7219 is an ultra-low-power audio codec with Advanced Accessory |
| Detection (AAD). This driver only supports generation of ACPI tables. |
| It does not support sound output or any of the other codec |
| features. |
| |
| config SOUND_I8254 |
| bool "Intel i8254 timer / beeper" |
| depends on SOUND |
| help |
| This enables support for a beeper that uses the i8254 timer chip. |
| This can emit beeps at a fixed frequency. It is possible to control |
| the length of the beeps, by turning a beep on, waiting for a period |
| of time, then turning it off. |
| |
| This is quite an old feature, called PIT (Programmable Interval |
| Timer), but is nonetheless still available on modern x86 machines. |
| |
| config SOUND_INTEL_HDA |
| bool "Intel HDA audio codec" |
| depends on SOUND |
| help |
| Most Intel chips have an HDA (High-definition audio) codec which can |
| be used by U-Boot to play simple beeps. This is also sometimes called |
| Azalia which was the development code-name. It requires setup |
| information in the device tree (see intel-hda.txt). |
| |
| config SOUND_IVYBRIDGE |
| bool "Intel Ivybridge sound support" |
| depends on SOUND |
| select SOUND_INTEL_HDA |
| help |
| Enable sound output on supported Intel Ivybridge-based boards. This |
| driver uses Intel's High-definition Audio (HDA) architecture, |
| sometimes called Azalia. The audio codec is detected using a |
| semi-automatic mechanism. |
| |
| config I2S_TEGRA |
| bool "Enable I2S support for Nvidia Tegra SoCs" |
| depends on I2S |
| select TEGRA124_DMA |
| help |
| Nvidia Tegra SoCs support several I2S interfaces for sending audio |
| data to an audio codec. This option enables support for this, |
| using one of the available audio codec drivers. |
| |
| config SOUND_MAX98088 |
| bool "Support Maxim max98088 audio codec" |
| depends on I2S |
| help |
| Enable the max98088 audio codec. This is connected via I2S for |
| audio data and I2C for codec control. At present it only works |
| with the Samsung I2S driver. |
| |
| config SOUND_MAX98090 |
| bool "Support Maxim max98090 audio codec" |
| depends on I2S |
| help |
| Enable the max98090 audio codec. This is connected via I2S for |
| audio data and I2C for codec control. At present it only works |
| with the Samsung I2S driver. |
| |
| config SOUND_MAX98095 |
| bool "Support Maxim max98095 audio codec" |
| depends on I2S |
| help |
| Enable the max98095 audio codec. This is connected via I2S for |
| audio data and I2C for codec control. At present it only works |
| with the Samsung I2S driver. |
| |
| config SOUND_MAX98357A |
| bool "Support Maxim max98357a audio codec" |
| depends on PCI |
| help |
| Enable the max98357a audio codec. This is connected on PCI for |
| audio data codec control. This is currently only capable of providing |
| ACPI information. A full driver (with sound in U-Boot) is currently |
| not available. |
| |
| config SOUND_RT5677 |
| bool "Support Realtek RT5677 audio codec" |
| depends on SOUND |
| help |
| Enable the Realtek RT5677 audio codec. This is an I2S device used on |
| some Chromebooks from around 2015 ('auron'). It is configured using |
| an I2C interface and supports multiple sound inputs and outputs, |
| including digital microphones. |
| |
| config SOUND_SANDBOX |
| bool "Support sandbox emulated audio codec" |
| depends on SANDBOX && SOUND |
| help |
| U-Boot sandbox can emulate a sound device using SDL, playing the |
| sound on the host machine. This option implements the sound_init() |
| and sound_play() functions for sandbox. Note that you must install |
| the SDL libraries for this to work. |
| |
| config SOUND_WM8994 |
| bool "Support Wolfson Micro wm8994 audio codec" |
| depends on I2S_SAMSUNG |
| help |
| Enable the wm8994 audio codec. This is connected via I2S for |
| audio data and I2C for codec control. At present it only works |
| with the Samsung I2S driver. |
| |
| endmenu |