The i2s bus is commonly used with audio codecs. It provides a way to stream digital data sychronously in both directions. U-Boot only supports audio output, so this uclass is very simple, with a single tx_data() method.
Add a uclass and a test for i2s.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v2: None
arch/sandbox/dts/test.dts | 7 +++- arch/sandbox/include/asm/test.h | 10 ++++++ drivers/sound/Makefile | 1 + drivers/sound/i2s-uclass.c | 25 ++++++++++++++ drivers/sound/sandbox.c | 60 ++++++++++++++++++++++++++++++++- include/dm/uclass-id.h | 1 + include/i2s.h | 32 +++++++++++++++--- test/dm/Makefile | 1 + test/dm/i2s.c | 32 ++++++++++++++++++ 9 files changed, 163 insertions(+), 6 deletions(-) create mode 100644 drivers/sound/i2s-uclass.c create mode 100644 test/dm/i2s.c
Applied to u-boot-dm/master