xref: /openbmc/u-boot/drivers/sound/Kconfig (revision 8f6d5bbb)
1menu "Sound support"
2
3config SOUND
4	bool "Enable sound support"
5	help
6	  Support making sounds through an audio codec. This is normally a
7	  beep at a chosen frequency for a selected length of time. However
8	  the drivers support playing arbitrary sound samples using a
9	  PCM interface.
10
11	  Note: At present the sound setup is somewhat tangled up in that the
12	  audio codecs are called from the sound-i2s code. This could be
13	  converted to driver model.
14
15config I2S
16	bool "Enable I2S support"
17	depends on SOUND
18	help
19	  I2S is a serial bus often used to transmit audio data from the
20	  SoC to the audio codec. This option enables sound support using
21	  I2S. It calls either of the two supported codecs (no use is made
22	  of driver model at present).
23
24config I2S_ROCKCHIP
25	bool "Enable I2S support for Rockchip SoCs"
26	depends on I2S
27	help
28	  Rockchip SoCs support an I2S interface for sending audio data to an
29	  audio codec. This option enables support for this, using one of the
30	  available audio codec drivers. This driver does not make use of
31	  DMA, but writes each word directly to the hardware.
32
33config I2S_SAMSUNG
34	bool "Enable I2C support for Samsung SoCs"
35	depends on I2S
36	help
37	  Samsung Exynos SoCs support an I2S interface for sending audio
38	  data to an audio codec. This option enables support for this,
39	  using one of the available audio codec drivers. Enabling this
40	  option provides an implementation for sound_init() and
41	  sound_play().
42
43config SOUND_I8254
44	bool "Intel i8254 timer / beeper"
45	depends on SOUND
46	help
47	  This enables support for a beeper that uses the i8254 timer chip.
48	  This can emit beeps at a fixed frequency. It is possible to control
49	  the length of the beeps, by turning a beep on, waiting for a period
50	  of time, then turning it off.
51
52	  This is quite an old feature, called PIT (Programmable Interval
53	  Timer), but is nonetheless still available on modern x86 machines.
54
55config SOUND_INTEL_HDA
56	bool "Intel HDA audio codec"
57	depends on SOUND
58	help
59	  Most Intel chips have an HDA (High-definition audio) codec which can
60	  be used by U-Boot to play simple beeps. This is also sometimes called
61	  Azalia which was the development code-name. It requires setup
62	  information in the device tree (see intel-hda.txt).
63
64config SOUND_IVYBRIDGE
65	bool "Intel Ivybridge sound support"
66	depends on SOUND
67	select SOUND_INTEL_HDA
68	help
69	  Enable sound output on supported Intel Ivybridge-based boards. This
70	  driver uses Intel's High-definition Audio (HDA) architecture,
71	  sometimes called Azalia. The audio codec is detected using a
72	  semi-automatic mechanism.
73
74config SOUND_MAX98088
75	bool "Support Maxim max98088 audio codec"
76	depends on I2S
77	help
78	  Enable the max98088 audio codec. This is connected via I2S for
79	  audio data and I2C for codec control. At present it only works
80	  with the Samsung I2S driver.
81
82config SOUND_MAX98090
83	bool "Support Maxim max98090 audio codec"
84	depends on I2S
85	help
86	  Enable the max98090 audio codec. This is connected via I2S for
87	  audio data and I2C for codec control. At present it only works
88	  with the Samsung I2S driver.
89
90config SOUND_MAX98095
91	bool "Support Maxim max98095 audio codec"
92	depends on I2S
93	help
94	  Enable the max98095 audio codec. This is connected via I2S for
95	  audio data and I2C for codec control. At present it only works
96	  with the Samsung I2S driver.
97
98config SOUND_RT5677
99	bool "Support Realtek RT5677 audio codec"
100	depends on SOUND
101	help
102	  Enable the Realtek RT5677 audio codec. This is an I2S device used on
103	  some Chromebooks from around 2015 ('auron'). It is configured using
104	  an I2C interface and supports multiple sound inputs and outputs,
105	  including digital microphones.
106
107config SOUND_SANDBOX
108	bool "Support sandbox emulated audio codec"
109	depends on SANDBOX && SOUND
110	help
111	  U-Boot sandbox can emulate a sound device using SDL, playing the
112	  sound on the host machine. This option implements the sound_init()
113	  and sound_play() functions for sandbox. Note that you must install
114	  the SDL libraries for this to work.
115
116config SOUND_WM8994
117	bool "Support Wolfson Micro wm8994 audio codec"
118	depends on I2S_SAMSUNG
119	help
120	  Enable the wm8994 audio codec. This is connected via I2S for
121	  audio data and I2C for codec control. At present it only works
122	  with the Samsung I2S driver.
123
124endmenu
125