1 menu "Sound support" 2 3 config 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 15 config 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 24 config 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 33 config 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 43 config SOUND_DA7219 44 bool "Dialog Semiconductor audio codec" 45 depends on SOUND 46 help 47 The DA7219 is an ultra-low-power audio codec with Advanced Accessory 48 Detection (AAD). This driver only supports generation of ACPI tables. 49 It does not support sound output or any of the other codec 50 features. 51 52 config SOUND_I8254 53 bool "Intel i8254 timer / beeper" 54 depends on SOUND 55 help 56 This enables support for a beeper that uses the i8254 timer chip. 57 This can emit beeps at a fixed frequency. It is possible to control 58 the length of the beeps, by turning a beep on, waiting for a period 59 of time, then turning it off. 60 61 This is quite an old feature, called PIT (Programmable Interval 62 Timer), but is nonetheless still available on modern x86 machines. 63 64 config SOUND_INTEL_HDA 65 bool "Intel HDA audio codec" 66 depends on SOUND 67 help 68 Most Intel chips have an HDA (High-definition audio) codec which can 69 be used by U-Boot to play simple beeps. This is also sometimes called 70 Azalia which was the development code-name. It requires setup 71 information in the device tree (see intel-hda.txt). 72 73 config SOUND_IVYBRIDGE 74 bool "Intel Ivybridge sound support" 75 depends on SOUND 76 select SOUND_INTEL_HDA 77 help 78 Enable sound output on supported Intel Ivybridge-based boards. This 79 driver uses Intel's High-definition Audio (HDA) architecture, 80 sometimes called Azalia. The audio codec is detected using a 81 semi-automatic mechanism. 82 83 config I2S_TEGRA 84 bool "Enable I2S support for Nvidia Tegra SoCs" 85 depends on I2S 86 select TEGRA124_DMA 87 help 88 Nvidia Tegra SoCs support several I2S interfaces for sending audio 89 data to an audio codec. This option enables support for this, 90 using one of the available audio codec drivers. 91 92 config SOUND_MAX98088 93 bool "Support Maxim max98088 audio codec" 94 depends on I2S 95 help 96 Enable the max98088 audio codec. This is connected via I2S for 97 audio data and I2C for codec control. At present it only works 98 with the Samsung I2S driver. 99 100 config SOUND_MAX98090 101 bool "Support Maxim max98090 audio codec" 102 depends on I2S 103 help 104 Enable the max98090 audio codec. This is connected via I2S for 105 audio data and I2C for codec control. At present it only works 106 with the Samsung I2S driver. 107 108 config SOUND_MAX98095 109 bool "Support Maxim max98095 audio codec" 110 depends on I2S 111 help 112 Enable the max98095 audio codec. This is connected via I2S for 113 audio data and I2C for codec control. At present it only works 114 with the Samsung I2S driver. 115 116 config SOUND_MAX98357A 117 bool "Support Maxim max98357a audio codec" 118 depends on PCI 119 help 120 Enable the max98357a audio codec. This is connected on PCI for 121 audio data codec control. This is currently only capable of providing 122 ACPI information. A full driver (with sound in U-Boot) is currently 123 not available. 124 125 config SOUND_RT5677 126 bool "Support Realtek RT5677 audio codec" 127 depends on SOUND 128 help 129 Enable the Realtek RT5677 audio codec. This is an I2S device used on 130 some Chromebooks from around 2015 ('auron'). It is configured using 131 an I2C interface and supports multiple sound inputs and outputs, 132 including digital microphones. 133 134 config SOUND_SANDBOX 135 bool "Support sandbox emulated audio codec" 136 depends on SANDBOX && SOUND 137 help 138 U-Boot sandbox can emulate a sound device using SDL, playing the 139 sound on the host machine. This option implements the sound_init() 140 and sound_play() functions for sandbox. Note that you must install 141 the SDL libraries for this to work. 142 143 config SOUND_WM8994 144 bool "Support Wolfson Micro wm8994 audio codec" 145 depends on I2S_SAMSUNG 146 help 147 Enable the wm8994 audio codec. This is connected via I2S for 148 audio data and I2C for codec control. At present it only works 149 with the Samsung I2S driver. 150 151 endmenu 152