tree bac89150871748da0277cea6d8ae8083b6e0a79f
parent 06f409d76f1d382167eb1cadde2e23a73272865d
author Mark Brown <broonie@opensource.wolfsonmicro.com> 1239126321 +0100
committer Mark Brown <broonie@opensource.wolfsonmicro.com> 1239126683 +0100

ASoC: Add WM8988 CODEC driver

The WM8988 is a low power, high quality stereo CODEC designed for
portable digital audio applications.

The device integrates complete interfaces to 2 stereo headphone or line
out ports. External component requirements are drastically reduced as no
separate headphone amplifiers are required. Advanced on-chip digital
signal processing performs graphic equaliser, 3-D sound enhancement and
automatic level control for the microphone or line input.

The WM8988 can operate as a master or a slave, with various master clock
frequencies including 12 or 24MHz for USB devices, or standard 256fs
rates like 12.288MHz and 24.576MHz. Different audio sample rates such as
96kHz, 48kHz, 44.1kHz are generated directly from the master clock
without the need for an external PLL.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>