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https://github.com/brain-hackers/u-boot-brain
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2665f09115
Add a driver for I2S which allows audio data to be sent from the SoC to the audio codec. The sample rate and other settings are hard-coded for now as there is no suitable device-tree binding available. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
77 lines
2.5 KiB
Plaintext
77 lines
2.5 KiB
Plaintext
menu "Sound support"
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config SOUND
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bool "Enable sound support"
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help
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Support making sounds through an audio codec. This is normally a
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beep at a chosen frequency for a selected length of time. However
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the drivers support playing arbitrary sound samples using a
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PCM interface.
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Note: At present the sound setup is somewhat tangled up in that the
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audio codecs are called from the sound-i2s code. This could be
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converted to driver model.
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config I2S
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bool "Enable I2S support"
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depends on SOUND
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help
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I2S is a serial bus often used to transmit audio data from the
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SoC to the audio codec. This option enables sound support using
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I2S. It calls either of the two supported codecs (no use is made
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of driver model at present).
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config I2S_ROCKCHIP
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bool "Enable I2S support for Rockchip SoCs"
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depends on I2S
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help
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Rockchip SoCs support an I2S interface for sending audio data to an
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audio codec. This option enables support for this, using one of the
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available audio codec drivers. This driver does not make use of
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DMA, but writes each word directly to the hardware.
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config I2S_SAMSUNG
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bool "Enable I2C support for Samsung SoCs"
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depends on SOUND
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help
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Samsung Exynos SoCs support an I2S interface for sending audio
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data to an audio codec. This option enables support for this,
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using one of the available audio codec drivers. Enabling this
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option provides an implementation for sound_init() and
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sound_play().
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config SOUND_MAX98090
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bool "Support Maxim max98090 audio codec"
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depends on I2S_SAMSUNG
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help
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Enable the max98090 audio codec. This is connected via I2S for
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audio data and I2C for codec control. At present it only works
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with the Samsung I2S driver.
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config SOUND_MAX98095
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bool "Support Maxim max98095 audio codec"
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depends on I2S_SAMSUNG
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help
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Enable the max98095 audio codec. This is connected via I2S for
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audio data and I2C for codec control. At present it only works
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with the Samsung I2S driver.
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config SOUND_SANDBOX
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bool "Support sandbox emulated audio codec"
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depends on SANDBOX && SOUND
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help
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U-Boot sandbox can emulate a sound device using SDL, playing the
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sound on the host machine. This option implements the sound_init()
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and sound_play() functions for sandbox. Note that you must install
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the SDL libraries for this to work.
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config SOUND_WM8994
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bool "Support Wolfson Micro wm8994 audio codec"
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depends on I2S_SAMSUNG
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help
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Enable the wm8994 audio codec. This is connected via I2S for
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audio data and I2C for codec control. At present it only works
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with the Samsung I2S driver.
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endmenu
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