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_INTEL_HDA 44 bool "Intel HDA audio codec" 45 depends on SOUND 46 help 47 Most Intel chips have an HDA (High-definition audio) codec which can 48 be used by U-Boot to play simple beeps. This is also sometimes called 49 Azalia which was the development code-name. It requires setup 50 information in the device tree (see intel-hda.txt). 51 52config SOUND_MAX98088 53 bool "Support Maxim max98088 audio codec" 54 depends on I2S 55 help 56 Enable the max98088 audio codec. This is connected via I2S for 57 audio data and I2C for codec control. At present it only works 58 with the Samsung I2S driver. 59 60config SOUND_MAX98090 61 bool "Support Maxim max98090 audio codec" 62 depends on I2S 63 help 64 Enable the max98090 audio codec. This is connected via I2S for 65 audio data and I2C for codec control. At present it only works 66 with the Samsung I2S driver. 67 68config SOUND_MAX98095 69 bool "Support Maxim max98095 audio codec" 70 depends on I2S 71 help 72 Enable the max98095 audio codec. This is connected via I2S for 73 audio data and I2C for codec control. At present it only works 74 with the Samsung I2S driver. 75 76config SOUND_SANDBOX 77 bool "Support sandbox emulated audio codec" 78 depends on SANDBOX && SOUND 79 help 80 U-Boot sandbox can emulate a sound device using SDL, playing the 81 sound on the host machine. This option implements the sound_init() 82 and sound_play() functions for sandbox. Note that you must install 83 the SDL libraries for this to work. 84 85config SOUND_WM8994 86 bool "Support Wolfson Micro wm8994 audio codec" 87 depends on I2S_SAMSUNG 88 help 89 Enable the wm8994 audio codec. This is connected via I2S for 90 audio data and I2C for codec control. At present it only works 91 with the Samsung I2S driver. 92 93endmenu 94